Answer:
The probability that there were 3 males is 1/4.
Step-by-step explanation:
Total Number of kitten = 4
Probability of a kitten to be male = 1/2
Probability of a kitten to be female = 1/2
Probability that out of 3 were male = 4 × 1/2 × 1/2 × 1/2 × 1/2
= 1/4
Therefore, The probability that there were 3 males is 1/4.
The graph shows the total cost (y) of producing x motorbike engines.
Complete the following sentences based on the graph.
The equation of the line is y = .
The total cost of producing 50 engines is .
option 1
0.2x+2
0.25x+2
0.4x+2
1.2x+2
option 2
$12,250
$14,750
$14,500
$15,000
Answer:
1) Second option: [tex]y=0.25x+2[/tex]
2) Third option: $14,500
Step-by-step explanation:
1) The equation of the line in Slope-intercept form is:
[tex]y=mx+b[/tex]
Where m is the slope and b is the y-intercept.
You know the point (20,7) of the line and you can observe in the graph that the y-intercept is:
[tex]b=2[/tex]
Then, you can substitute these values into the equation [tex]y=mx+b[/tex]
and solve for the slope "m":
[tex]7=m(20)+2\\\\7-2=20m\\\\m=\frac{5}{20}\\\\m=0.25[/tex]
Therefore, the equation of this line is:
[tex]y=0.25x+2[/tex]
2) To calculate the total cost of producing 50 engines, you need to substitute [tex]x=50[/tex] into the equation of the line [tex]y=0.25x+2[/tex]. Then you get:
[tex]y=0.25(50)+2[/tex]
[tex]y=0.25x+2[/tex]
[tex]y=14.5[/tex]
Since the y-axis represents the total cost "y" in thousands of dollar, then the total cost of producing 50 engines is:
$14,500
The average number of people at a concert over 3 nights is 125. On the first night, there were 151 people at the concert. The same number of people attended the second and third night. How many people attended on each of the second and third nights?
Answer:
164 people
Step-by-step explanation:
Let's say x = # of people in night 2 and 3
Average = (n₁ + n₂ + n₃ + ...)/n
Plug in known numbers: (125 + x + x)/3 = 151
Multiply + simplify: 125 + 2x = 453
Subtract: 2x = 328
Divide: x = 164
Final answer:
To determine the number of people who attended the concert on the second and third nights, an equation based on the average attendance was formulated and solved, resulting in 112 people attending each of those nights.
Explanation:
To solve this problem, we need to find out how many people attended the concert on the second and third nights. Since we know the average number of people for the 3 nights was 125 and there were 151 people on the first night, we can set up an equation to find the number attending on the other nights.
Let the number of people who attended on the second and third nights be x each. The total number of people over the three nights is then 151 + x + x (since the same number of people attended the second and third nights). To find this number, we multiply the average number of people (125) by the number of nights (3).
We get the equation:
125 * 3 = 151 + x + x
375 = 151 + 2x
375 - 151 = 2x
224 = 2x
x = 112
Thus, 112 people attended the concert on each of the second and third nights.
Given that (9,-8) is on the graph of f(x), find the corresponding point for the function f(3/4x)
Answer:
The corresponding point for the function f(3/4 x) is (12 , -8)
Step-by-step explanation:
* Lets revise the horizontal stretch or compress
- A horizontal stretching is the stretching of the graph away from
the y-axis
- A horizontal compression is the squeezing of the graph toward
the y-axis.
# if k > 1, the graph of y = f(k•x) is the graph of f(x) horizontally
compressed by dividing each of its x-coordinates by k.
# if 0 < k < 1 (a fraction), the graph y = f(k·x) is the graph of f(x)
horizontally stretched by dividing each of its x-coordinates by k.
* Now lets solve the problem
- The function f(x) will be the function f(3/4 x)
∵ The x multiplied by a constant
∴ f(x) stretched or compressed horizontally
∵ f(x) ⇒ f(k · x)
∵ f(x) ⇒ f(3/4 x)
∴ k = 3/4 ⇒ less than 1
∵ 0 < k < 1
∴ f(x) starched horizontally
∴ Divide each of its x-coordinates by k
∵ k = 3/4
∴ Divide each of its x-coordinates by 3/4
∵ Point (9 , -8) is on the graph of f(x)
- Find the corresponding point on the graph f(3/4 x) by dividing
x-coordinate by 3/4
∵ x = 9
∴ The corresponding x = 9 ÷ 3/4 = 9 × 4/3 = 36/3 = 12
∴ The corresponding point is (12 , -8)
Find the value of c .
5/2 = c/22
c = ___.
Answer:
c = 55
Step-by-step explanation:
Answer:
55
Step-by-step explanation:
I did this and it was correct please vote me as brainlies!
Hope this helped! :)
please help me it’s number 31
Answer:
31. (a) The height decreases by 12 feet each second towards the first floor
(b)
After 3 seconds, the elevator is 144 feet above the first floorAfter 6 seconds, the elevator is 108 feet above the first floorAfter 9 seconds, the elevator is 72 feet above the first floor(c) It takes 15 seconds for the elevator to get to the first floor
(d) The basement floor is 48 feet below the first floor
Step-by-step explanation:
31 (a) explanation:
An elevator is 180 feet above the first floor.
Each second, it descends 12 feet.
So the elevator's change in height each second is a decrease of 12 feet towards the first floor.
31 (b) explanation:
If the elevator goes down 12 feet, towards the first floor, in 1 second then;
After 3 seconds it will be 180 feet - 3(12) feet = 144 feet above the first floorAfter 6 seconds it will be 180 feet - 6(12) feet = 108 feet above the first floorAfter 9 seconds it will be 180 feet - 9(12) feet = 72 feet above the first floor31 (c) explanation:
If the elevator is 180 feet above the first floor and it takes 1 second to descend 12 feet,
Then it will take: [tex]\frac{180 feet}{12 feet}[/tex] × 1 second = 15 seconds reach the first floor.
31 (d) explanation:
From the first floor it takes 4 seconds to reach the basement floor
Therefore the basement floor is [tex]\frac{4 seconds}{1 second}[/tex] × 12 feet = 48 feet below the first floor
The integer -12 is the change in the height of the elevator per second
It will take 15 seconds for the elevator to get to the first floor.
The height of the basement floor with respect to the first floor is 48 feet.
What integer is the change in the height of the elevator each second?Since the elevator descends, the change in height is negative.
The magnitude of the change in height is 12 feet per second, so the change in height is −12 feet per second.
Completing the table.The completed table is
Time Height
0 sec 180
3 sec 180-3*12=132
6 sec 180-6*12=108
9 sec 180-9*12=72
Seconds it takes the elevator to get to the Height first floor.Here, we divide the initial height by the rate of descent.
So, we have
Time = 180 feet / 12 feet per second = 15 seconds.
What is the height of the basement floor with respect to the first floor?If the elevator descends to the basement floor in 4 seconds, then the height of the basement floor with respect to the first floor is
4 seconds * 12 feet per second = 48 feet.
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PLEASE HELP 10 POINTS
Answer:
x=7*64/80
x=5.6
Step-by-step explanation:
Let x represent miles would she run in 64 minutes?
Question Sets Up the Proportion
70/80=x/64 |Cross Multiplying to solve for x
x = 7*64/80
x = 5.6mi
Answer:
He would run 5 miles. If you divide 80 by 7, it would equal 11. Meaning subtract 11 for every mile. To get to 64 subtract 11 twice. That leaves 58. 58 would be 5 miles. 11+11+11+11+11 is 55. 3 more minutes and its 58. Our total is 5 miles.
Hope this helped. Have a good day. :D
Also let me know if you need more help.
Step-by-step explanation:
ALGEBRA 2 HELP ASAP PLZ
Answer:
Step-by-step explanation:
binomial
Answer:
polynomial
Step-by-step explanation:
A monomial has only 1 term ( mono - 1 )
A binomial has 2 terms ( bi - 2 )
A trinomial has 3 terms ( tri - 3 )
7x³ + 2x² - 9x + 1 ← has 4 terms and is a polynomial
Ms. Alvarez has $1482 to spend on origami paper. how many packs can she buy
a certain amount of paper
Izzy's dog is 10 and 1/2 years old Pages dog is 18 months old how many years older is Izzy's dog
Izzy's dog is 10.32 years older.
10.5 years - 0.18 years = 10.32
if a wheelie chair is pushed down the 6th grade hallway and does not bump into any people or lockers, what causes the wheelie chair to stop moving? hurry i need an answer!!
Potential Energy: the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.Compare with kinetic energy
Friction :the action of one surface or object rubbing against another.
plz dont sue me if Im wrong
The wheelie chair stops moving because of friction between the chair wheels and the floor, along with a bit of air resistance. These forces oppose the motion and gradually slow the chair down until it stops.
Even though you initially give the chair energy to move by pushing it, the floor exerts a frictional force that slows it down over time until it comes to a stop.Additionally, air resistance, although minimal, also contributes by creating a small opposing force against the motion of the chair. Together, these forces cause the chair to gradually decrease its speed.Verify that f and g are inverse functions
f(x)=2x, g(x)=[tex]\frac{x}{2}[/tex]
y=2x
switch x and y
x=2y
solve for y
x/2 =y
this is the same as g(x)
Answer:
see explanation
Step-by-step explanation:
If f(x) and g(x) are inverses then
f(g(x)) = g(f(x)) = x
f(g(x)) = f([tex]\frac{x}{2}[/tex]) = 2 × [tex]\frac{x}{2}[/tex] = x
g(f(x)) = g(2x) = [tex]\frac{2x}{2}[/tex] = x
Hence
f(x) and g(x) are inverse functions
Can someone help me please
Answer:
AD||BC
Step-by-step explanation:
Given:
m∠3=m∠B
And if a traversal cuts two lines such that the corresponding angles are equal then the lines are parallel
Hence the lines AD and BC are parallel
AD||BC !
Write the correct comparison (< = > or =) in each box
2...bigger =3/5 less 1/8
To write the correct comparison symbol, we compare two numbers or expressions to determine their relationship, using <, >, or =. This mathematical skill is important for understanding and working with inequalities.
Explanation:To answer a question that asks you to write the correct comparison (using <, >, or =), we need to evaluate and compare the given numbers or expressions to determine which symbol is appropriate. This involves mathematical understanding and skills such as ordering numbers, understanding inequalities, and applying mathematical operations if needed.
Let's use an example to illustrate this:
If we have the numbers 7 and 10, and we are asked to put the correct comparison symbol between them, we would write 7 < 10, because 7 is less than 10.For expressions, if we have 2 + 3 and 4 + 1, the comparison would be 5 = 5, because both expressions equal 5.Writing the correct comparisons is an essential math skill that helps students understand and work with inequalities and is widely applicable in various aspects of both academics and real life.
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Please Answer numbers 4 and 5
Due Tomorrow! Please Answer with Explanation ;) thank you
Answer:
Median is the middle number
Mean is the average
Step-by-step explanation:
for #4
order the tree heights from the least to greatest and the middle number would be your median. If you have an even amount (no middle) then add the two middle numbers and dived it by 2
for # 5
Add the numbers all up on a calculator then dived by the amount of numbers you added.
Really simple :)
Hope that helps!
Answer:
Step-by-step explanation:
The median is 73.5
The mean is 72.7
Hope this helps!
Solve: 2(x - 4) = 4(2x + 1)
Answer:
x=-2
Step-by-step explanation:
2(x - 4) = 4(2x + 1)
Distribute
2x -8 = 8x+4
Subtract 2x from each side
2x-2x-8 = 8x-2x+4
-8 = 6x+4
Subtract 4 from each side
-8-4 = 6x+4-4
-12 = 6x
Divide by 6
-12/6 = 6x/6
-2 =x
Find the area of the figure
I think it’s B.
I did 9 times 7
The area is going to be 63
the sum of three numbers is 63. The first number is twice the second number, and the third number is three times the first number. Set these numbers
Answer:
Step-by-step explanation:
2x+x+3(2x)=63
3x+6x=63
9x=63
9x/9=63/9
X=7
2x=14
3(2x)=42
Can someone help me with this it is system of equations and you have to find the cost of each one
Answer:
1 cupcake = $3.75
1 ice-cream = $4.50
1 doughnut = $1.50
Step-by-step explanation:
2 ice-cream + 1 cup cake = $12.75 ------------ [ 1 ]
1 ice-cream + 2 doughnuts = $7.50 ------------ [ 2 ]
1 cup cake + 1 doughnut + 1 ice-cream = $9.75 ------------ [ 3 ]
From [ 1 ] :
2 ice-cream + 1 cup cake = $12.75
1 cupcake = $12.75 - 2 ice-cream
Substitute [ 1 ] into [ 3 ]:
1 cup cake + 1 doughnut + 1 ice-cream = $9.75
$12.75 - 2 ice-cream + 1 doughnut + 1 ice-cream = $9.75
1 doughnut - 1 ice-cream = -$3 ------------ [ 4 ]
[ 2 ] + [ 4 ] :
3 doughnuts = $4.75
1 doughnut = $1.50
Substitute (1 doughnut = $1.50) into [ 2] :
1 ice-cream + 2 doughnuts = $7.50
1 ice-cream + 2 x $1.50 = $7.50
1 ice-cream + $3 = $7.50
1 ice-cream = $4.50
Substitute (1 ice-cream = $4.50) into [ 1 ]:
2 ice-cream + 1 cup cake = $12.75
2 x $4.50 + 1 cup cake = $12.75
1 cupcake = $12.75 - $9
1 cupcake = $3.75
To find the cost of each in a system of equations, you need to solve the equations simultaneously. You can solve for one variable first and substitute it into the other equation to find the value of the second variable. Once you have the value of one variable, you can substitute it back into one of the original equations to find the value of the other variable.
Explanation:In the field of Mathematics, specifically in algebra, a system of equations is a set of equations with the same variables. When you're asked to find the cost of each one, you're actually being asked to solve this system of equations. Let's assume your system of equations is:
5x + 2y = 40 (Equation 1) 3x + 4y = 35 (Equation 2)
You can solve for one variable first from either equation and substitute it into the other. For example, from Equation 1 you can solve for x: x = (40 - 2y)/5. Substituting x into Equation 2 gives us: 3((40 - 2y)/5) + 4y = 35. Solving this will give you the value of y which can then be substituted into any of the original equations to find the cost of x.
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Terri has 5 boxes of flower seeds. She wants to give the seeds away to friends. If she gives 1/8 of a box away how many people can she give seeds to?
Answer:
She can give 1/8 of a box to 40 people
5x8=40
Step-by-step explanation:
Terri can give seeds to 40 people, each receiving 1/8 of a box, as she has a total of 40 portions of 1/8 from her 5 boxes of flower seeds.
Terri has 5 boxes of flower seeds and wants to know how many people she can give seeds to if she gives away 1/8 of a box to each person. To solve this, we calculate the total portions of seeds she has and then divide that by the portions she is giving to each friend. Since there are 8 portions of 1/8 in one box, Terri has a total of 5 boxes imes 8 = 40 portions of seeds. Hence, Terri can give seeds to 40 people, with each person receiving 1/8 of a box.
change .00345 to a percent.
A) .345%
B) 3.45%
C) 34.5%
D) 345%
Answer:
0.345%
Step-by-step explanation:
you multiply is by 100
Answer:
A
Step-by-step explanation:
When converting from a decimal to a percent, you always multiply the decimal by 100, and in this case, multiplying the number 0.00345 gets us 0.345. This number is the percent, in this case 0.345%, or answer choice A.
PLEASE HELP WITH THE QUESTION BELOW ASAP!! THANKS SO MUCH!
Answer:
y = 6x - 40
Step-by-step explanation:
A parabola is the set of all points that ?
In a plane such that the distance from these points to a fixed point
Answer:
A parabola is the set of all points in the plane equidistant from a given line and a given point not on the line.
A parabola is the set of all points in the plane equidistant from directrix and focus.
Step-by-step explanation:
A parabola is the set of all points in the plane equidistant from a given line and a given point not on the line.
The line is called directrix and the point is called focus.
So a parabola is the set of all points in the plane equidistant from directrix and focus.
(HELP ASAP HIGH POINTS) Which double-angle or half-angle identity would you use to verify the following:
Answer:
B
Step-by-step explanation:
Using the trigonometric identities
• cscx = [tex]\frac{1}{sinx}[/tex] and secx = [tex]\frac{1}{cosx}[/tex]
Consider the left side
cscx sec x = [tex]\frac{1}{sinx}[/tex] × [tex]\frac{1}{cosx}[/tex] = [tex]\frac{1}{sinxcosx}[/tex]
Consider the right side
2 csc2x = [tex]\frac{2}{sin2x}[/tex] = [tex]\frac{2}{2sinxcosx}[/tex] = [tex]\frac{1}{sinxcosx}[/tex]
left side = right side hence identity is verified
Choose the right answer which year had higher profit in month 3 ?
Answer:
Where is month 3 I will comment the answer if there is a graph or table to know!!! For house for economics. Sorry I don't understand...
Step-by-step explanation:
Answer:
Last year
Step-by-step explanation:
The question is:
Which year had a decrease in profit between months 3 and 4?
The answer is last year
I hope this helps!
Nancy found that x = 1 is one solution to the quadratic equation (x + 2)2 = a. What is the value of a?
ANSWER
a=9
EXPLANATION
The given quadratic equation is
[tex] {(x + 2)}^{2} = a[/tex]
If x=1 is a solution, then it must satisfy this equation:
[tex]{(1 + 2)}^{2} = a[/tex]
[tex] {3}^{2} = a[/tex]
[tex]a = 9[/tex]
Therefore the value of 'a' is 9
Answer:
answer is A
Step-by-step explanation:
Solve 7x/3 < 2.
Please help !
Answer:
[tex]\large\boxed{\left\{x\ |\ x<\dfrac{6}{7}\right\}}[/tex]
Step-by-step explanation:
[tex]\dfrac{7x}{3}<2\qquad\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup^1\cdot\dfrac{7x}{3\!\!\!\!\diagup_1}<3\cdot2\\\\7x<6\qquad\text{divide both sides by 7}\\\\\dfrac{7x}{7}<\dfrac{6}{7}\\\\x<\dfrac{6}{7}[/tex]
Answer: First Option
{[tex]x|x<\frac{6}{7}[/tex]}
Step-by-step explanation:
We have the following inequality [tex]\frac{7}{3}x <2[/tex]
To solve the inequality, apply the following steps:
1) Multiply by 3 on both sides of the inequality
[tex]\frac{3 * 7}{3}x <2 * 3\\\\7x <6[/tex]
2) Divide by 7 both sides of the inequality
[tex]\frac{7}{7}x <\frac{6}{7}[/tex]
[tex]x <\frac{6}{7}[/tex]
The solution is all numbers smaller than [tex]\frac{6}{7}[/tex]
10 points please help ASP i need to do a lot of work and I'm behind
Also please only answer the once you know please
Answer: 1. Yellow, green, black, white, blue, red. yes equally likely
2. heads, tails. yes equally likely
3. possibilites: yellow heads, yellow tails, green heads, green tails, black heads, black tails, white heads, white tails, blue heads, blue tails, red heads, red tails.
4. 1/12
5. still 1/12
Step-by-step explanation:
What is the value of the expression below? (3 1/2 - 9 3/4) divided (-2.5)
Answer:Exact form: 5/2
Decimal form: 2.5
Mixed number form: 2 1/2
Hope this helps:)
Step-by-step explanation:
Which are the independent events? Check all that apply
Answer:
Independent events are those that do not depend on others. Two entities does not depend on each other. The change in one entity does not change the other.
So, independent events here are-
1. rolling a number cube twice.
2. flipping a coin 4 times.
3. choosing a meal combination.
Rest two options are dependent on each other.
Answer:ACD
Step-by-step explanation:
Edgy
Write the expression using a single exponent 2^2•2^8
A.4^10
B.2^10
C.4^16
D.2^16
i think it’s B but i’m not for sure
I think it’s C. 4^16,