Which is the first incorrect step in the solution shown above ?

Answer:

A) 33

Explanation:

There are always chances so you never know where the samples could be from. The answer 33 makes the most logical sense.

A.33.sample population

Answer:

120 votes

Step-by-step explanation:

So one way to solve this is by creating an equation to solve for x.

So we are given 4/7, that will be one side of the equation.  

And we are trying to figure out how many votes out of the 210 she received, so on the other side of the equation we will have x/210, since we are solving for x.  

So 4/7 = x/210

We want to get x alone, so we can multiply 4/7 by 210, which equals 120.

So x equals 120!

Isabel received 4/7 of the 210 votes for class treasurer, which equals 120 votes when the total is multiplied by the fraction.

The student is asking for help with a mathematics problem related to finding a fraction of a whole number. Isabel received 4/7 of the total votes cast for class treasurer, and the total number of votes cast was 210. To find how many votes Isabel received, we simply multiply 210 by 4/7:

Isabel's votes = (210) * (4/7)

Isabel's votes = 840 / 7

Isabel's votes = 120

Therefore, Isabel received 120 votes.

anwser is 5/12

dividing a fraction is the same as multiplying by a reciprocal

Answer:

The answer is 3/4.

Step-by-step explanation:

1 1/2 is equal to 1.5.

1.5 divided by 2 is 0.75.

0.75 is equal to 3/4.

Answer:

Step-by-step explanation:

first you gotta make 1 1/2 an improper fraction then you put 2 over one to make a fraction to divide then swich 1 and 2 and multiply and the answer would be 3/4

Answer:

1) d. 2400

2) d.4200

Step-by-step explanation:

As per given data:

F(x) represents number of fish

x represents number of weeks

Relation between F(x) and x is given as

F(x)= 500 (1.2)x

Now part 1:

How many fish are in the pond after 4 weeks=?

x=4

Putting in given equation  F(x)= 500 (1.2)x

F(x)= 500(1.2)(4)

     = 2400

Now part 2:

How many fish are in the pond after 7 weeks?

x=7

Putting in given equation  F(x)= 500 (1.2)x

F(x)= 500(1.2)(7)

     = 4200 !

Answer:

Correct choice is b. 1036 fish.

and c. 1791 fish.

Step-by-step explanation:

Given equation is [tex]f(x)=500(1.2)^x[/tex].

There x represents number of weeks. We need to find about wow many fish are in the pond after 4 weeks.

To find that we will plug x=4 into above formula and simplify

[tex]f(x)=500(1.2)^x[/tex]

[tex]f(x)=500(1.2)^{4}[/tex]

[tex]f(x)=500(2.0736)[/tex]

[tex]f(x)=1036.8[/tex]

Which is approx 1036

Hence correct choice is b. 1036 fish.

------

We can repeat same process with x=7 for 2nd problem

[tex]f(x)=500(1.2)^{7}=1791.5904[/tex]

Hence correct choice is c. 1791 fish.

9. Area = 59.755[tex]cm^{2}[/tex] square cm. when the area to nearest tenth then, area = 60 square cm.

10. Area = 22.9813[tex]mi^{2}[/tex]. When the area to nearest tenth then, area = 20 square mi.

Area of the Triangle:

Area of the triangle is = half of (base x height)

=> (1/2) x (b x h)

Trigonometry:

sinθ = opposite side / hypotenuse

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The area of the triangles are 59.8 square cm and 23.0 square miles

From the question, we have the following parameters that can be used in our computation:

The triangle

The area of each triangle is calculated using the following sine equation

Area = 1/2absin(C)

Using the above as a guide, we have the following

Area of triangle 1 = 1/2 * 11 * 11 * sin(99 degrees)

Area of triangle 1 = 59.8 square cm

Area of triangle 2 = 1/2 * 5 * 12 * sin(50 degrees)

Area of triangle 2 = 23.0 square miles

Hence, the area of the triangles are 59.8 square cm and 23.0 square miles

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Answer:

72

Step-by-step explanation:

(24*6)/2 = 72

Answer:

[tex]144ft^2[/tex]

Step-by-step explanation:

For this problem, we can use the formula for the area of a kite.

[tex]A=\frac{pq}{2}[/tex]

Where p and q are the diagonals.

Since line AE starts at the edge of the kite and ends at the center, we can multiply its value by 2 to find the value of the p diagonal.

[tex]6*2=12[/tex]

So diagonal p is 12ft.

Now we can find the value of the q diagonal, which will be adding BE and DE.

[tex]9+15=24[/tex]

So diagonal q is 24ft.

Let's plug them into the area formula I mentioned earlier.

[tex]A=\frac{12*24}{2} \\ \\ A=\frac{288}{2} \\ \\ A=144[/tex]

Answer:

coordinate of the other endpoint is (-9,-2)

Step-by-step explanation:

Given that a segment has endpoints at (1, -2). The midpoint is at (-4, -2).

Now we need to find about what are the coordinates of the other endpoint.

let the coordinates of other end points are (x,y)

Then mid point of (1,-2) and (x,y) is given by mid point formula:

[tex]\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)[/tex]

[tex]\left(\frac{x+1}{2},\frac{y-2}{2}\right)=(-4,-2)[/tex]

[tex]\Rightarrow \frac{x+1}{2}=-4, \frac{y-2}{2}=-2[/tex]

[tex]\Rightarrow x+1=-8, y-2=-4[/tex]

[tex]\Rightarrow x=-9, y=-2[/tex]

hence coordinate of the other endpoint is (-9,-2)

Answer:

what the otherperson said

Step-by-step explanation:

just read what the other person said

C.yes, because of ASA or AAS

Answer:

Asin(wt + φ) = c2sinwt +c1coswt

Step-by-step explanation:

Proof:

wt here is periodic where as φ is constant

taking left hand side

Asin(wt + φ)

Using trigonometric identity sin(θ+φ) = sinθcosφ +sinφcosθ

Asin(wt +φ) = A[sinwtcosφ +sinφcoswt]

                  = Asinwtcosφ +Asinφcoswt

Now as we know φ is constant

so will Asinφ and Acosφ will also be constant

let     Asinφ= c1

and Acosφ=c2

Putting in above expression, we get

Asin(wt +φ) = c2sinwt +c1coswt !

Answer: The population in Eric's survey is the high school seniors.

Answer:

all high school seniors at Eric’s school

Step-by-step explanation:

Answer: [tex]f(2)=25[/tex]

Step-by-step explanation:

You know that the given function is:

[tex]f(x)=4x^3-x^2-5x+7[/tex]

You know that you must evaluate this function for [tex]x=2[/tex].

Then, to evaluate the function for [tex]x=2[/tex], you need to substitute this value into the given function and simplify it.

Therefore, you get:

[tex]f(x)=4x^3-x^2-5x+7\\f(2)=4(2)^3-(2)^2-5(2)+7\\f(2)=4(8)-(4)-10+7\\f(2)=32-4-10+7\\f(2)=25[/tex]

So, the answer is: [tex]f(2)=25[/tex]

Answer:

see explanation

Step-by-step explanation:

0.97 is the value of cos14° to 2 dec. places

Use your calculator ( ensuring it is in degree mode )

press cos14 then = to obtain value 0.97

Answer:

not a factor

Step-by-step explanation:

If (x - 3) is a factor then f(3) = 0

f(x) = 2x² - 4x + 30

f(3) = 2(3)² - 4(3) + 30 = 18 - 12 + 30 = 36 ≠ 0

Since f(3) ≠ 0 then (x - 3) is not a factor of f(x)

Final answer:

The range of a cosine function is the set of output values the function can take, which is always between -1 and +1. This applies to the standard cosine function and is unaffected by horizontal or phase shifts. This range is consistent with the definition of the cosine function as the ratio of the adjacent side to the hypotenuse in a right triangle.

Explanation:

The range of a cosine function refers to the set of possible values that the function can output. In mathematical terms, the cosine function oscillates between +1 and -1 irrespective of any horizontal shifts or phase shifts. A horizontal shift, demonstrated in Figure 15.8 (b), where the function is shifted by an angle φ (phase shift), does not alter the range of values of the function, which remain – from its minimum value of -1 to its maximum of +1.

Similarly, in Figure 16.10, a sine function, which is related to the cosine function, also oscillates between +1 and -1 every 2π radians (a complete cycle). This oscillation represents the wave function amplitude, which in cases other than a cosine can fluctuate between +A and -A.

As illustrated in Figure 2.18, the cosine function can be visualized as the ratio of the adjacent side to the hypotenuse (Ax/A = cos A) in a right triangle, further highlighting that this ratio (and thus the range of the cosine function) is between -1 and 1.

For example, when √(1+1)* approaches 1, it is indicative that cos 0 = 1, representing one end of the cosine function's range.

Answer:

x² + 23x + 49

Step-by-step explanation:

Area of the big rectangle

= (x + 10)(2x + 5)

= 2x² + 5x + 20x + 50

= 2x² + 25x + 50

Area of the small white rectangle

= (x + 1)(x + 1)

= x² + x + x + 1

= x² + 2x + 1

Area of the shaded area

= (2x² + 25x + 50) - (x² + 2x + 1)

= 2x² + 25x + 50 - x² - 2x - 1

= x² + 23x + 49

Answer:

x = 14; x = 0  

Step-by-step explanation:

(x)(6 + 8) = x²

(x)(14) = x²

14x = x²

14x - x² = 0

(x)(14 - x) = 0

x = 14; x = 0  

Hello There!

Your answer would be “B”

Forget about the -5 and just do 5 multiplied by 3 and you get a product of 15.

Then, make it negative and it would be 4^-15

The surface of the ocean is 0 meters.

Because the fish is below the surface it would be a negative number. ( it is less than 0)

The elevation of the fish would be -12 meters.

Answer:

-12 meters

Step-by-step explanation:

Elevation is the height above a given level, most often the sea. Therefore, elevation is like a vertical numerical line. If the sea level is 0, and to the right of the 0 is positive numbers, then the left has to be negative.

Therefore, the fish is -12 meters below sea level.

Answer:

A' = (5,7)

Step-by-step explanation:

So, we start with the original point A at (3,1), that means x = 3 and y = 1.

We move it 2 units to the right... so we're moving along the X-axis... and we're moving to the right.. so we're increasing the value of x.  That means starting with x = 3, we go 2 more units... we then get to x = 5.

In the same way, we move 6 units up... so we move along the Y-axis.  We go up, so we also increase the value of y.  Starting with y = 1, we move up by 6 units... so we are now at y = 7.

A' point is then at (5,7).

i believe they would spend $36.12

Answer:

number2

Step-by-step explanation:

Answer:

f(x) = |x|

Step-by-step explanation:

function is even if and only if f(-x) = f(x)

f(x) = |x| ; regard to its sign f(x) = x

f(-x) = |-x| ; regard to its sign f(-x) = x

So answer is f(x) = |x| is the even function

Answer:

112 trucks

Step-by-step explanation:

so you take ratio:

1000-250

3584-x

x=896

and after you divide 896 by 8 hours and get 112

hope it helped you

let the width of the rectangle be x

area of rectangle is l*b

x * (x + 6) = 40^2

x^2 + 6x = 40^2

x^2 + 6x = 1600

x + 6x =√1600

x + 6x = 40

7x = 40

x = 5.7

Hope you found this useful

Answer:

11

Step-by-step explanation:

11*2=22, 22+14=36, quick maths

Answer:

11

Step-by-step explanation:

36-14 gives you the doubled-number you chose, 22.

Then since the number is doubled, divide it by 2. 22÷2=11

The height of rectangle is 10 inch

Answer:

10 inches

Step-by-step explanation:

A quantity is proportional to 18/3 if it simplifies to the same value, which is 6. The proportional quantities are 90/15, 36/6, 72/12, and 6/1, as they all simplify to 6. The quantity 36/12 is not proportional since it simplifies to 3.

To determine which quantities are proportional to 18/3, we need to find what 18 divided by 3 equals and then compare this to the given fractions to check for equivalence. Calculating 18/3 gives us 6. Now, let's examine each option:

90/15: This fraction reduces to 6, which is proportional to 18/3.

36/6: This fraction also equals 6 after simplification, so it is proportional to 18/3.

72/12: Simplifying 72/12 gives us 6, making it proportional to 18/3

6/1: 6 divided by 1 is just 6, so this too is proportional to 18/3.

36/12: Simplifying 36/12 results in 3, which is not equal to 6, so it is not proportional to 18/3.

Answer:

Step-by-step explanation:

The way that this function looks when graphed could be similar to the seismic waves recorded when an earthquake hits.

A logarithmic measure known as the Richter scale is used to quantify the overall energy generated during an earthquake. Each number higher on the Richter scale denotes a ten-times-stronger intensity. For instance, a magnitude 5 earthquake is ten times more powerful than a magnitude 4 earthquake.

The logarithm is exponentiation's opposite function in mathematics. This indicates that the exponent to which a fixed number, base b, must be raised in order to obtain a specific number x, is represented by the logarithm of that number.

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Answer:

Option B. [tex]x=-\frac{9}{28}(+/-)\frac{\sqrt{479}}{28}i[/tex]

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form [tex]ax^{2} +bx+c=0[/tex] is equal to

[tex]x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}[/tex]

in this problem we have

[tex]14x^{2}+9x+10=0[/tex]

so

[tex]a=14\\b=9\\c=10[/tex]

substitute in the formula

[tex]x=\frac{-9(+/-)\sqrt{9^{2}-4(14)(10)}} {2(14)}[/tex]

[tex]x=\frac{-9(+/-)\sqrt{-479}} {28}[/tex]

Remember that

[tex]i=\sqrt{-1}[/tex]

substitute

[tex]x=\frac{-9(+/-)\sqrt{479}i} {28}[/tex]  

[tex]x=-\frac{9}{28}(+/-)\frac{\sqrt{479}}{28}i[/tex]

Answer:

Part A) The equation is [tex]t=3.50z+40[/tex]

Part B) Kristina did go to the gym 20 times

Step-by-step explanation:

Let

t-----> the total amount

z----> the number of times that Kristina go the health club

Part A) Write an equation

we know that

The linear equation that represent this situation is

[tex]t=3.50z+40[/tex]

Part B) For [tex]t=\$110.00[/tex]

Substitute the value of t in the linear equation and solve for z

[tex]110.00=3.50z+40[/tex]

[tex]3.50z=110.00-40[/tex]

[tex]3.50z=70.00[/tex]

[tex]z=70.00/3.50[/tex]

[tex]z=20\ times[/tex]