If you have a lowest score of 21 and a range of 47, your highest score will be:________

Answer:

B. 33

Step-by-step explanation:

Let the number of Fuji trees be F, the number of gala be G and the total number of trees be x.

10% cross pollinated, this means 1/10 cross pollinated or 0.1x

Number of Fuji plus cross pollinated is 187.

And cross pollinated is 3/4 of total or let’s say 0.75 of total which is 0.75x

Now, adding 0.1x + 0.75x would equal 187

0.85x = 187

x = 187/0.85 = 220 trees

The total number of trees is 220.

The number of gala trees is thus 220 - 187 = 33 trees

Keisha bought 15 science fiction novels.

Step-by-step explanation:

Given,

Number of novels bought by Keisha = 24

Mystery novels = 3/8 of total novels

Mystery novels = [tex]\frac{3}{8}*24=\frac{72}{8}[/tex]

Mystery novels = 9

Let,

x represent the number of science fiction novels.

Mystery novels + Science fiction novels = Total novels

[tex]9+x=24\\x=24-9\\x=15[/tex]

Keisha bought 15 science fiction novels.

Keywords: fraction, addition

Learn more about fractions at:

#LearnwithBrainly

Answer: the amount invested on the first mutual fund is $600 and the the amount invested on the second mutual fund is $1700

Step-by-step explanation:

Let x represent the amount of money that the investor invested in one mutual fund.

Let y represent the amount of money that the investor invested in the second mutual fund.

An investor invested a total of $2,300 in two mutual funds. This means that

x + y = 2300

Considering the first mutual fund, it earned a 8% profit. This means that amount earned is

8/100 × x = 0.08x

Considering the second mutual fund, it earned a 2% profit. This means that amount earned is

2/100 × y = 0.02y

If the investors total profit was $82, it means that

0.08x + 0.02y = 82 - - - - - - - - 1

Substituting x = 2300 - y into equation 1, it becomes

0.08(2300 - y) + 0.02y = 82

184 - 0.08y + 0.02y = 82

- 0.08y + 0.02y = 82 - 184

- 0.06y = - 102

y = - 102/- 0.06 = 1700

x = 2300 - y = 2300 - 1700

x = 600

Answer:the approximate amount that he will have to set aside each month to reach his goal is $162

Step-by-step explanation:

Total amount of bill that John wants to pay off js $2,100. $2,100 bill in the next 13 months. To determine the amount that he will have to set aside each month to reach his goal, we would divide the total bill by the number of months. It becomes

2100/13 = 161.538

The approximate amount is $162

Answer:

$162

Step-by-step explanation:

$2,100/13

Answer:

w=1.5t+12

Step-by-step explanation:

that's the right answer

The equation for the function W(t) representing the weight of the newborn baby t months after birth is W(t) = 16 + 1.5t

We can make use of the given data.

The infant gained weight at a pace of 1.5 pounds each month, reaching 16 pounds at the end of 4 months. With this knowledge, the equation can be written as follows:

W(t) = Initial weight + (Rate of weight gain per month) * (Number of months)

W(t) = 16 + (1.5 * t)

So, the equation for the function W(t) representing the weight of the newborn baby t months after birth is W(t) = 16 + 1.5t

Learn more about equation here : brainly.com/question/29174899

#SPJ3

Answer:

A. Between 14 and 15.

Step-by-step explanation:

Let x be the one leg of the right triangle.

We have been given that the legs of a right triangle are in the ratio of 3 to 1. So, the other leg of the right triangle would be 3x.

We are also told that the length of the hypotenuse of the triangle is √40.

Using Pythagoras theorem, we can set am equation as:

[tex]x^2+(3x)^2=(\sqrt{40})^2[/tex]

Let us solve for x.

[tex]x^2+9x^2=40[/tex]

[tex]10x^2=40[/tex]

[tex]\frac{10x^2}{10}=\frac{40}{10}[/tex]

[tex]x^2=4[/tex]

Take square root of both sides:

[tex]x=\sqrt{4}[/tex]

[tex]x=2[/tex]

The other leg would be [tex]3x\Rightarrow 3\cdot 2=6[/tex].

The perimeter of the triangle would be:

[tex]\text{Perimeter of triangle}=2+6+\sqrt{40}[/tex]

[tex]\text{Perimeter of triangle}=2+6+6.324555[/tex]

[tex]\text{Perimeter of triangle}=14.324555[/tex]

Therefore, the perimeter of the triangle is between 14 and 15 and option A is the correct choice.

Answer:

Step-by-step explanation:

232/2=116

so 116,116 has maximum product

Answer:

7 software packages

Step-by-step explanation:

Given,

Signing amount = $ 225,

Additional amount for each software package = $ 25

Thus, the total amount for x software packages = signing amount + additional amount for x packages

= 225 + 25x

If total amount ≥ $ 400

225 + 25x ≥ 400

25x ≥ 400 - 225

25x ≥ 175

[tex]\implies x \geq \frac{175}{25}=7[/tex]

Hence, the minimum number of software packages that she must sell would be 7.

Final answer:

Alison needs to sell at least 7 software packages this week on top of her base salary to earn at least $400.

Explanation:

Alison wants to earn at least $400 this week by selling software packages. She earns a base $225 per week plus $25 for each software package sold. To determine the minimum number of software packages Alison must sell, we subtract her base salary from her desired earnings for the week:

Required earnings (>=$400) - Base salary ($225) = Sales required from software packages

$400 - $225 = $175

Now divide the sales required from software packages by the amount earned per package:

$175 / $25 = 7

Therefore, Alison needs to sell at least 7 software packages to meet her goal of $400

Answer:

Option C. Residual

Step-by-step explanation:

Residuals are defined as:

Thus,

The difference between the observed value of the dependent variable and the value predicted by using the estimated regression equation is the residuals.

Option C. Residual

The difference between the observed value of the dependent variable and the value predicted by using the estimated regression equation is the residual.

The following information should be considered:

Therefore we can conclude that option c is correct.

Learn more: brainly.com/question/17429689

Answer:

7

Step-by-step explanation:

To find the maximum possible value of f(2), assume f(x) is a line with the greatest possible slope.  In this case, 5.

f(x) = 5x − 3

f(2) = 5(2) − 3

f(2) = 7

Answer:

[tex]\large\boxed{1\dfrac{1}{3}\ u^2}[/tex]

Step-by-step explanation:

Let's sketch graphs of functions f(x) and g(x) on one coordinate system (attachment).

Let's calculate the common points:

[tex]x^2=\sqrt{x}\qquad\text{square of both sides}\\\\(x^2)^2=\left(\sqrt{x}\right)^2\\\\x^4=x\qquad\text{subtract}\ x\ \text{from both sides}\\\\x^4-x=0\qquad\text{distribute}\\\\x(x^3-1)=0\iff x=0\ \vee\ x^3-1=0\\\\x^3-1=0\qquad\text{add 1 to both sides}\\\\x^3=1\to x=\sqrt[3]1\to x=1[/tex]

The area to be calculated is the area in the interval [0, 1] bounded by the graph g(x) and the axis x minus the area bounded by the graph f(x) and the axis x.

We have integrals:

[tex]\int\limits_{0}^1(\sqrt{x})dx-\int\limits_{0}^1(x^2)dx=(*)\\\\\int(\sqrt{x})dx=\int\left(x^\frac{1}{2}\right)dx=\dfrac{2}{3}x^\frac{3}{2}=\dfrac{2x\sqrt{x}}{3}\\\\\int(x^2)dx=\dfrac{1}{3}x^3\\\\(*)=\left(\dfrac{2x\sqrt{x}}{2}\right]^1_0-\left(\dfrac{1}{3}x^3\right]^1_0=\dfrac{2(1)\sqrt{1}}{2}-\dfrac{2(0)\sqrt{0}}{2}-\left(\dfrac{1}{3}(1)^3-\dfrac{1}{3}(0)^3\right)\\\\=\dfrac{2(1)(1)}{2}-\dfrac{2(0)(0)}{2}-\dfrac{1}{3}(1)}+\dfrac{1}{3}(0)=2-0-\dfrac{1}{3}+0=1\dfrac{1}{3}[/tex]

The area bounded by the functions f(x) and g(x) in graph below.

The given function are f(x)=x² and g(x)=√x.

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

To find the area between two curves defined by functions, integrate the difference of the functions. If the graphs of the functions cross, or if the region is complex, use the absolute value of the difference of the functions.

Area bounded = |x²-√x|

Find the domain by finding where the expression is defined.

Interval Notation:

[0,∞)

Set-Builder Notation:{x|x≥0}

Therefore, the area bounded by the functions f(x) and g(x) in graph below.

To learn more about the function visit:

https://brainly.com/question/28303908.

#SPJ2

Answer:

k = +/- 6

Step-by-step explanation:

In the XY-Plane above, the circle has center (h,k) and radius 10. What is the value of k?

The concluding part of this question will be

Two coordinates are given, (4,0) and (20,0)

equation of a circle

([tex](x-h)^{2} +(y-k)^{2} =r^{2}[/tex]

We can then have two equations of the circle and solve simultaneously

([tex](4-h)^{2} +(-k)^{2} =10^{2}[/tex] .............................1

([tex](20-h)^{2} +(-k)^{2} =10^{2}[/tex] ......................................2

combining the two equation to solve

(20-h)^2 - (4-h)^2 = 0

20^2 - 40h +h^2 -4^2 + 8h -h^2 = 0

20^2 - 42 = 32h

h = 12

(4-12)^2 + (-k)^2 = 100

k^2 = 36

k = +/- 6

Answer: 22

Step-by-step explanation:

The area of the picture =l×b = 20×16=320

The length of the frame is 16

If the width is x ( and it's uniform)

672- 320= 352

Area of the frame = 16× x=352

x=352/16

x = 22

Total width is 42 inch.

Given that,

According to the scenario, computation of the given data are as follows,

Total area of picture = 16 [tex]\times[/tex] 20 = 320 sq in.

So Frame area = 672 - 320 = 352

Now, length of frame = 16

Let, width of frame  =  w

So, 16 [tex]\times[/tex]  w = 352

W = 352 [tex]\div[/tex] 16

W = 22 inch

So total width is 22 + 20 = 42 inch.

Learn more : https://brainly.com/question/6629047

Answer:

Step-by-step explanation:

Wholesaler A is selling 10 pounds of chicken for $40.00. This means that the unit rate at which Wholesaler A is selling the chicken is

40/10 = $4 per pound of chicken.

Wholesaler B is selling 15 pounds of chicken for $45.00. This means that the unit rate at which Wholesaler B is selling the chicken is

45/15 = $3 per pound of chicken.

Wholesaler C is selling 20 pounds of chicken for $50.00. This means that the unit rate at which Wholesaler C is selling the chicken is

50/20 = $2.5 per pound of chicken.

Wholesaler C has the best price because she has the lowest unit rate pound of chicken.

Answer:

The answer to your question is letter B

Step-by-step explanation:

Process

1.- Find two points of each line

Line A    (-2, 0)   (-1, 2)

Line B    (-1. - 5)   (-6, 0)

2.- Find the slope and equation of each line

Line A

             [tex]m = \frac{2 - 0}{-1 + 2}[/tex]

             [tex]m = \frac{2}{1}[/tex]

                    m = 2

             y - 0 = 2(x + 2)

            y = 2x + 4

Line B

             [tex]m = \frac{0 + 5}{-6 + 1}[/tex]

             [tex]m = \frac{5}{-5}[/tex]

                    m = -1

             y - 0 = -1(x + 6)

             y = -x - 6

3.- Find the inequalities

Line A, we are interesteed in the lower area of the line, so the inequality is

                      y ≤ 2x + 4

Line B, we are also interested in the lower area of the line so the inequality is

                      y ≥ - x - 6

Answer:B

Step-by-step explanation:

The sum of the given series [tex]\sum _{a=1}^{10}\:\left(2a+2\right)[/tex]  is 130.

Step-by-step explanation:

The sum of series need to be found is [tex]\sum _{a=1}^{10}\:\left(2a+2\right)[/tex] .

Apply sum rule,

[tex]\sum x_n+y_n=\sum x_n+\sum y_n[/tex]

[tex]\sum _{a=1}^{10}\:\left(2a+2\right).[/tex] =[tex]\sum 2a+\sum 2[/tex].

Apply the constant multiplication rule,

[tex]\sum c\cdot a_n=c\cdot \sum a_n[/tex] .

[tex]\sum 2\cdot a=2\cdot \sum a[/tex].

[tex]\sum _{a=1}^{10}n[/tex] = 1+2+3+4+5+6+7+8+9+10.

[tex]\sum _{a=1}^{10}n[/tex] = 55.

[tex]\sum 2\cdot a[/tex]=2×55.

[tex]\sum 2\cdot a [/tex]=110.

To find [tex]\sum _{a=1}^{10}2[/tex],

Apply sum rule, [tex]\sum _{k=1}^n\:a\:=\:a\cdot n[/tex] ,

[tex]\sum _{a=1}^{10}2[/tex] =2×10.

[tex]\sum _{a=1}^{10}2[/tex] = 20.

[tex]\sum _{a=1}^{10}\:\left(2a+2\right)[/tex] = 110+20.

[tex]\sum _{a=1}^{10}\:\left(2a+2\right)[/tex] =130.

To find the number of students who played soccer but not baseball or tennis, we need to analyze the given information and use the formula A = (A ∩ B) + (A ∩ C) + (A - A ∩ B ∩ C). Substituting the given values, we find that 32 students played soccer but not baseball or tennis.

To determine how many students played soccer but not baseball or tennis, we need to analyze the information given in the Venn diagram provided. Let's label the regions of the Venn diagram:

A represents the set of students who played soccer.

B represents the set of students who played baseball.

C represents the set of students who played tennis.

From the given information, we know that:

To find the number of students who played soccer but not baseball or tennis, we need to calculate the value of A without the intersection of the other sets. Using the formula:

A = (A ∩ B) + (A ∩ C) + (A - A ∩ B ∩ C),

we can substitute the given values:

A = 4 + 3 + (25 - 1)

A = 32

Therefore, 32 students played soccer but not baseball or tennis.

Answer:

n=7

Step-by-step explanation:

let n be number of sides.

(n-2)180=900

n-2=900/180=5

n=5+2=7

Answer:

Step-by-step explanation:

Reflection across the y-axis is a left-right reflection that changes only the sign of the x-coordinate. The transformation matrix (as for any rotation and/or reflection) can be 2-dimensional, and can left-multiply the coordinate matrix that has coordinate pairs as column vectors. The transformed coordinates show up as column vectors in the result matrix.

The only graphs showing left-right reflections are those of choices C and D. Only choice C has the points properly plotted on the graph.

The correct answer is graph C, or the third option.

Just got it right on edge 2020, hope this helps!! :)

Answer:

E. $926.24

Step-by-step explanation:

The total amount of interest paid is shown below:

1. For 6 months, the interest would be

= Invested amount × interest rate

= $10,000 × 2%

= $200

2. For 12 months, the interest would be

= (Invested amount + interest paid for 6 months)  × interest rate

= ($10,000 + $200) × 3%

= $10,200 × 3%

= $306

3. For 18 months, the interest would be

= (Invested amount + interest paid for 6 months + interest paid for 12 months )  × interest rate

=  ($10,000 + $200 + $306) × 4%

= $420

Now the total interest would be

= $200 + $306 + $420.24

= $926.24

Answer:

The radius of the oblique cylinder is 4 cm.

Step-by-step explanation:

Given:

The volume of the oblique cylinder = [tex]192 \pi cm^3[/tex]

Height of the cylinder = 12 cm

To Find:

Radius of the oblique cylinder = ?

Solution:

we know that the volume of the oblique cylinder  

=>[tex]\text{base area of the cylinder} \times \text{height of the cylinder}[/tex]------------------------------(1)

where base area of the cylinder is the area of the circle

so area of the circle = base area

[tex]\pi r^2[/tex] = base area---------------(2)

Substituting (2) in (1)

[tex]192 \pi = \pi r^2 \times height[/tex]

[tex]192 \pi = \pi \times r^2 \times height[/tex]

[tex]192 \pi = \pi \times r^2 \times 12[/tex]

[tex]\frac{192 \pi}{ \pi \times 12}= r^2[/tex]

[tex]\frac{192}{12}= r^2[/tex]

[tex]16= r^2[/tex]

[tex] r^2 =16[/tex]

[tex] r =\sqrt{16}[/tex]

r=4

Answer:

Z value for the first  pump = -0.68

Z value for the second pump = 0.45

Step-by-step explanation:

Data provided in the question:

Mean labor cost to repair a heat pump = $90

Standard deviation = $22

Labor cost for the first, X₁ = $75

Labor cost for the Second, X₂ = $100

Now,

Z value for the first  pump = [X₁ - Mean] ÷ Standard deviation

thus,

Z value for the first  pump = [ $75 - $90] ÷ $22

= - 0.68

Z value for the second pump = [X₁ - Mean] ÷ Standard deviation

thus,

Z value for the second pump = [ $100 - $90] ÷ $22

= 0.45

Answer:

z1= -0.6818

z2= 0.45

Step-by-step explanation:

Mean labor cost to repair the heat pump is μ= $90

standard deviation σ= $22

Labor cost for the first heat pump X_1= $75

labor cost for the second heat pump is X_2= $100

z value for the first heat pump

[tex]z_1= \frac{X_1-\mu}{\sigma}[/tex]

⇒ [tex]z_1= \frac{75-90}{22}[/tex]

= -0.6818

z value for the second heat pump

[tex]z_2= \frac{X_2-\mu}{\sigma}[/tex]

⇒[tex]z_2= \frac{100-90}{22}[/tex]

= 0.45

The cost of one pack of coffee is $12 and cost of one tea pack is $6.

Step-by-step explanation:

Let,

Cost of one pack of coffee = x

Cost of one pack of tea = y

According to given statement;

39x+45y=738    Eqn 1

11x+13y=210       Eqn 2

Multiplying Eqn 1 by 11

[tex]11(39x+45y=738)\\429x+495y=8118\ \ \ Eqn\ 3\\[/tex]

Multiplying Eqb 2 by 39

[tex]39(11x+13y=210)\\429x+507y=8190\ \ \ Eqn\ 4[/tex]

Subtracting Eqn 3 from Eqn 4

[tex](429x+507y)-(429x+495y)=8190-8118\\429x+507y-429x-495y=72\\12y=72[/tex]

Dividing both sides by 12

[tex]\frac{12y}{12}=\frac{72}{12}\\y=6[/tex]

Putting y=6 in Eqn 2

[tex]11x+13(6)=210\\11x+78=210\\11x=210-78\\11x=132[/tex]

Dividing both sides by 11

[tex]\frac{11x}{11}=\frac{132}{11}\\x=12[/tex]

The cost of one pack of coffee is $12 and cost of one tea pack is $6.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

Answer:

A pack of coffee=$12

A pack of tea=$6

Step-by-step explanation:

Let the cost of 1 pack of coffee =c

and the cost of 1 pack of tea =t

we can the write the following equations

39c+45t=738...........eqn(1)

11c+13t=738...........eqn(2)

Multiply eqn(1) by 11

429c+495t=8118...........eqn(3)

Multiply eqn(2) by 39

429c+507t=8190...........eqn(4)

eqn(4)-eqn(3)

This implies

12t=72

Dividing through by 12 ,we get

t=6

substituting the value of t into equation two,we obtain

11c+13(6)=210

11c+78=210

11c=210-78

11c=132

Dividing through by 11,we obtain

c=12

Answer:

B

Step-by-step explanation:

just swap around which one you multiply by 2 as they have multiplied the larger one by 2 instead of the smaller one.

Answer:

B.

Step-by-step explanation:

The error is on the first line:

4x + 20 = 2(3x + 5) is correct

- because AE = 2BD.

Answer:  The required length of the diameter of the circumscribed circle is 24 units.

Step-by-step explanation:  Given that one side of a triangle has length 12 units and its opposite angle measures 30 degrees.

We are to find the diameter of the circumscribed circle.

We know that

if a, b, c are the lengths of the three sides of a triangle and A, B, C are the corresponding measures of the opposite angles respectively, then the ratio

[tex]\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}=d,[/tex]

is said to the length of the diameter of the circumscribed circle of the triangle.

According to the given information, we have

a = 12  and  A = 30°.

Therefore, the length of the diameter of the circumscribed circle is

[tex]d=\dfrac{a}{\sin A}=\dfrac{12}{\sin 30^\circ}=\dfrac{12}{\frac{1}{2}}=24.[/tex]

Thus, the required length of the diameter of the circumscribed circle is 24 units.

Given the details of a triangle with  one of its sides as 12 and opposite angle as 30 degrees, the diameter of the circumscribed circle is twice the length of thegiven side. Since the hypotenuse of the triangle is the diameter of a circumscribed circle, the diameter in this case is 24.

The subject of this question is pertaining to geometry, specifically, the relationship between sides and angles in triangles, and circles. In particular, we are dealing with a situation where we have a triangle inscribed in a circle (a triangle with a circumscribed circle), and we are asked to find the diameter of the said circle.

Now, from trigonometry, we know that the sine of any angle in a right triangle is defined as the length of the opposite side divided by the length of the hypotenuse. In this case, you're given that one side of the triangle (which we'll assume is the opposite side) is 12, and its opposite angle is 30 degrees. Since the sine of 30 degrees is 0.5, this means that the hypotenuse of this triangle is actually twice the length of the given side. Thus, the hypotenuse is 2 * 12 = 24.

This is significant because, in any triangle inscribed in a circle, the diameter of the circle is equal to the length of the hypotenuse. Therefore, in this case, the diameter of the circle would be 24.

https://brainly.com/question/35497232

#SPJ11

Answer:

Each of the three friends will get one-sixth of the Thomas's enitre marble collection.

Step-by-step explanation:

Fraction of the total marble collection brought by Thomas = [tex]\frac{1}{2}[/tex]

Now, Thomas divides these marbles equally among his three friends. So, each of the three friends will get one-third of the total marble collection brought by Thomas.

Fraction of total marble collection got by each friend = [tex]\frac{1}{3} \;of\;fraction\;of\;total\;marble\;collection\;brought\;by\;Thomas[/tex]

= [tex]\frac{1}{3}\times\frac{1}{2}=\frac{1}{6}[/tex]

∴ Each of the three friends of Thomas will get one-sixth of his entire collection of marbles.

Answer:

8.65%

Step-by-step explanation:

Given information:

Recession Return = 13%

Normal Return = 6%

Boom  Return = -4%

Probability of a recession = 45 %

Probability of a boom = 5 %

Probability of a normal = 100 - 45 - 5 = 50%

We need to find the expected rate of return on this stock.

Expected rate of return is the sum of products of probability and returns of each state of economy.

Expected rate of return [tex]=13\%\times 45\%+6\%\times 50\%+(-4\%)\times 5\%[/tex]

                                       [tex]=5.85\%+3\%-0.2\%[/tex]

                                       [tex]=8.65\%[/tex]

Therefore, the expected rate of return on this stock is 8.65%.

Answer:

The height of the wall is approximately 10.17 feet.

Step-by-step explanation:

Given,

Length of wall = 30 feet

Total number of bricks = 2135

We have to find out the height of the wall.

To find out the height of wall, we have given the formula;

[tex]N=7LH[/tex]

Where N stands for number of bricks, L stands for length of wall and H stands for height of wall.

So we substitute the given values, we get;

[tex]2135=7\times30\times H\\\\2135=210H\\\\H=\frac{2135}{210}=10.166\approx10.17\ ft\\[/tex]

Hence the height of the wall is approximately 10.17 feet.

Answer:

3d

Step-by-step explanation:

A regular hexagon has six equivalent triangles, each triangle having one side of that of the hexagon. if the diameter of the circle in which the hexagon is inscribed is d , then its radius will be

[tex]r=\frac{d}{2}[/tex]

this radius also happens to be one of the side of the equivalent triangle whose one side is also the side of hexagon. since length of one side of hexagon is

[tex]\frac{d}{2}[/tex]

the circumference of the hexagon will be [tex]6 (\frac{d}{2} )\\\\thus \\circumference   \\of \\hexagon = 3d[/tex]

Answer:the number of stamps that his cousin collected is 20. The variable is x which represents number of stamps. The equation is

4x = 60

Step-by-step explanation:

Let x represent the number of stamps that his cousin collected.

Xander collected four times as many stamps as his cousin. This means that the number of stamps that Xander collected is 4x

If xander collected 60 stamps, then it means that

4x = 60

x = 60/4 = 20 stamps

Final answer:

The number of stamps Xander's cousin collected is determined by dividing the number of stamps Xander collected, which is 60, by 4. Therefore, his cousin collected 15 stamps.

Explanation:

If Xander collected four times as many stamps as his cousin, and Xander collected 60 stamps, we can determine how many stamps his cousin collected by setting up an equation. Let's define c as the number of stamps Xander's cousin collected. According to the information provided, Xander collected four times this amount, so we have the equation 4c = 60. To find the value of c, we divide both sides of the equation by 4:

c = 60 / 4

c = 15

Therefore, Xander's cousin collected 15 stamps.