I need help asap what’s the answer

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Explanation:

There are 1800 students total.

Take 2/5 of this to find the number of girls

(2/5)*1800 = 720 students are girls

Subtract that result from the total to get the number of boys

1800-720 = 1080 students are boys

We'll use this value later, so let A = 1080.

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540 students do not play sports

(5/9)*540 = 300 girls do not play sports.

540-300 = 240 boys do not play sports

Let B = 240

------------

We found that

Therefore,

A-B = 1080 - 240 = 840 boys play sports

Hey there! :)

Answer:

f(-2) = -148.

Step-by-step explanation:

To calculate f(-2), simplify substitute -2 for x in the equation. Therefore:

f(x) = 4x³ -12x² + 40x + 12

Becomes:

f(-2) = 4(-2)³ - 12(-2)² + 40(-2) + 12

Simplify:

f(-2) = 4(-8) - 12(4) - 80 + 12

f(-2) = -32 - 48 -80 + 12

Finally, you get:

f(-2) = -148.

Answer:

Hey there!

A simple way to think about slope is rise over run. Between any two points on this line, the rise is 3, and the run is -1.

3/-1=-3, so  the slope is -3.

Let me know if this helps :)

The car's speed after the given amout of time is 19.8 m/s²

The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration. A point or object going straight ahead is accelerated when it accelerates or decelerates. Any alteration in an object's velocity could take the form of a change in direction of motion or a speed increase or reduction. The moon orbiting the earth, an apple falling to the ground, and a car stopped at a stop sign are a few instances of acceleration.

Average Acceleration =Change in Velocity/ Time Taken

So Change in Velocity is 10-x m/s

Time taken is 7.25 s

Given accelaration 4.11 m/s²

Putting the values we get,

4.11 = (10-x)/7.25

⇒29.8 = 10-x

⇒x=19.8 m/s²

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The probability that the instrument somehow doesn't fail in an 8-hour shift is 0.886 for the frequency of testing instrument failures due to contamination particles on the item is a Poisson random variable with either a mean of 0.015 errors per hour.

Using Poisson Distribution,

Let X be the number of failures in 8 hours. Because there are 8 hours instead of 1, the mean will be 8 × 0.015 = 0.12.

As a result, the opportunity of no failures during this period is increased.

P(X = 0), is

P(0) = (\(e^{-0.12}\) × \((0.24)^{0}\)) ÷ 0!

P(0) = (0.886 × 1) ÷ 1

P(0) = 0.886

The probability that the instrument will not fail during an 8-hour shift is 0.886.

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Answer:

it would run up almost 360 kph

Step-by-step explanation:

i look it up

The number of ways to select 12 disks from a total of 55 disks is 1.171 x 10¹⁰. The number of ways to select 5 good and 7 defective disks is approximately 1.050 x 10¹⁰.

A. We have 20 + 35 = 55 disks. We want to select 12 disks from these 55 disks.

The order of selection does not matter; it is a combination problem.

The number of ways to select 12 disks from 55 is given by:

C(55, 12) ≈ 1.171 x 10¹⁰.

Therefore, the number of ways to select 12 disks from a total of 55 disks is 1.171 x 10¹⁰.

We have used the counting technique C for this part.  

B. We want to select five good and seven defective disks from the total of 20 + 35 = 55 disks.

The order of selection does not matter; it is a combination problem. We can select 5 good disks from 35 good disks in C(35, 5) ways. We can select 7 defective disks from 20 defective disks in C(20, 7) ways. So, the number of ways to select five good and seven defective disks is:

C(35, 5) × C(20, 7) ≈ 1.050 x 10¹⁰.

Therefore, the number of ways to select five good and seven defective disks is approximately 1.050 x 10¹⁰.

We have used the counting technique C for this part.

C. We want to select either 3 good and 9 defective disks or 5 good and 7 defective disks.

The order of selection does not matter; it is a combination problem. For selecting 3 good and 9 defective disks, we can select 3 good disks from 35 good disks in C(35, 3) ways.

We can select 9 defective disks from 20 defective disks in C(20, 9) ways.

For selecting 5 good and 7 defective disks, we can select 5 good disks from 35 good disks in C(35, 5) ways.

We can select 7 defective disks from 20 defective disks in C(20, 7) ways.

Therefore, the number of ways to select either 3 good and 9 defective disks or 5 good and 7 defective disks is:

C(35, 3) × C(20, 9) + C(35, 5) × C(20, 7) ≈ 6.875 x 10⁹.

Therefore, the number of ways to select either 3 good and 9 defective disks or 5 good and 7 defective disks is approximately 6.875 x 10⁹.

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The rate of change is represented by the slope of each club.

For Club A is 12.

For Club B we calculate using the formula

The value is 21.

For Club C we apply the same formula and use the poins shown in the graphic

For club D the slope is the value that is paid each month

which in this case is $20

According to this the greatest rate of chande is for Health Club B

Answer:

x=3, y=-1

Step-by-step explanation:

We are already given an equation solved for x, making substitution much easier. We know x=4y+7, meaning we can put 4y+7 whenever we see x in the second equation

2x-6y=12

We substitute 4y+7 in place of x

2(4y+7)-6y=12

Now we only have one variable to work on, distribute the 2

8y+14-6y=12

Combine similar terms, 8y-6y=2y

2y+14=12

Subtract 14 from both sides

2y=-2

y=-1

Now we plug in -1 for y in the first equation to find x

x=4(-1)+7

x=-4+7

x=3

The required solution of the given system of equations are x = 3 and y = -1.

The term "equation" refers to mathematical statements that have at least two terms with variables or integers that are equal.

The given system of equations is below as:

x = 4y + 7      ....(i)

2x - 6y = 12   ....(ii)

To solve the equations, use the substitution method.

Substitute the value of equation x = 4y+7 in (ii), and solve for y

2(4y + 7) - 6y = 12

8y + 14 - 6y = 12

8y - 6y = 2y

2y + 14 = 12

Subtract 14 from both sides of the equation

2y = -2

y = -1

Substitute the value of y = -1 in (i), and solve for x

x = 4(-1) + 7

x = -4 + 7

x = 3

Thus, the required solution of the given system of equations are x = 3 and y = -1.

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To prove that every linear map on a subspace of V can be extended to a linear map on V. We have to show that there exists a linear map T from V to W that extends S and satisfies Tu = Su for all u in U.

Let U be a subspace of a finite-dimensional vector space V, and let S be a linear map from U to another vector space W. du in U.

Since V is finite-dimensional, ready to select a premise {u1, u2, ..., um} of U and expand it to the premise {u1, u2, ..., um, v1, v2, ... increment. Let {w1, w2, ..., wk} be the premise of W.

 You can define T using the base elements of V as follows:

T(uj) = S(uj) for j = 1, 2, ..., m (since uj is in U and S is a linear map from U to W)

T(vi) = 0 for i = 1, 2, ..., n (to ensure that T is a linear map)

We can extend T linearly to all of V by defining T as

For any vector v in V, we can write v as a linear combination of basis elements.

v = a1u1 + a2u2 + ... + amount + b1v1 + b2v2 + ... + bnvn

Then we can define T(v) as

T(v) = a1T(u1) + a2T(u2) + ... + amT(um) + b1T(v1) + b2T(v2) + ... + bnT(vn)

Structurally, this definition of T agrees with the definition of S on the subspace U, since T(uj) = S(uj) for j = 1, 2, ..., m. Since T is a linear map on V, it is also well-defined and satisfies the linear property.

T(cv + w) = cT(v) + T(w)

For every vector v, w in V, and every scalar c. Thus, we showed that there exists a linear map T from V to W that extends S and satisfies Tu = Su for all u in U.

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Answer:

28 hours

Step-by-step explanation:

Divide the total cost of the new smartphone by how much Stacey earns per hour.

220 / 8 = 27.5

Round the quotient up to the nearest whole number to get your answer. We do this because Stacey would not get paid for only working part of an hour.

28

The ratio of the volume of the rigth circular cylinder a to the volume of the right circular cylinder b is 1: 18.

According to the given question.

We have two right circular cylinder, a nd b.

Also,

The radius of right circular cylinder, a is r.

The height of the right circular cylinder, a is h.

The radius of the right circular cylinder, b is 3r.

And the height of the right circular cylinder, b is 2h.

As we know that, the volume of a cylinder can be calculated using the formula V=πr^2(h). Where r is the radius and h is the height of the cylinder.

So, the volume of the right circular cylinder a  = πr^2h

And, the volume of the right circular cylinder b = π(3r)^2(2h) = 18hr^2π

Therefore,

The ratio of the volume of the rigth circular cylinder a to the volume of the right circular cylinder b

= πr^2h/18hr^2π

= 1:18

Hence, the ratio of the volume of the rigth circular cylinder a to the volume of the right circular cylinder b is 1: 18.

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The number of degrees that will represent each football team member would be = 9.73°.

Pie chart is a type of data presentation that is circular in shape and has an internal degree that is a total of 360°.

The total number of people in the football team = 37

Therefore the quantity of degree measurement for each individual = 360/37 = 9.73°.

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Answer:

8/125

Step-by-step explanation:

Answer: 55.74

Step-by-step explanation:

To multiply polynomials together, use distributive property. With the distributive property, it is possible to multiple a sum by multiplying each term independently, then adding the products together.

A polynomial is an expression made up of variables, constants, and exponents that are combined using mathematical operations like addition, subtraction, multiplication, and division.

Example:

The distributive property is an algebra property that allows you to multiply a single term with two or more terms enclosed by parentheses. Understand how distributive property works, can help you to multiply polynomials easily.

Example:

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Answer: Commutative, Distributive, Associative

Step-by-step explanation:

Answer: She is correct because the average of the numbers 2, 3, 1, 4, 5, 2, 3, 4, 3, is 3.

Step-by-step explanation:

To find average you add all of the listed numbers, (2, 3, 1, 4, 5, 2, 3, 4, 3) which is 27. You then divide 27 by the amount of listed numbers, which is 9. 27 divided by 9 is 3. There for the average amount of strokes it takes to hit the ball into the hole of each green is 3.

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Answer:

The triangles are lined up with their correct pairs already.

Step-by-step explanation:

The leg that is the base is always seen as the bottom, and the leg to the side of it that makes the right angle will always be the height. Though if the base is at the hypotenuse as it is seen in the last photo, the height will be from the point of which the two legs of the triangle meet down to the hypotenuse.

Answer:

45 degree is an acute Angle

Step-by-step explanation:

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Answer:

5 : 7

Step-by-step explanation:

groom's side: 40

bride's side: 56

ratio groom to bride = 40/56 = 20/28 = 10/14 = 5/7

Answer: 5 : 7

Answer:

D

Step-by-step explanation:

You take the area of the square minus the area of the circle.

Answer:

Step-by-step explanation:

You just combine common variables.

8a^5 -4

3a^5 + a -2

11a^5 + a -6

The solution to the first is 11a^5+a-6.

The second:

3x^2 -2x + 1

-x^2 + 3x + 1

2x^2 + x + 2

2x^2+x+2

Answer:

Answer: a. 3+13n

b. About 3 newspapers

Step-by-step explanation:

a. T=total thickness of newspapers on a skid in inches

T=3+13n

b. 3'=3 ft

1 ft=12 inches

3 ft=3*12 inches

3 ft=36 inches

36=3+13n

13n=33

n=2.54 ==> About 3 newspapers

the first one is C

the second one is D

the third one is B

and the last one is A

All you want to do is count up the y-intercept when it crosses and that gives you the last number (b).

Answer:

(B) false, because triangle have three altitude.

Answer:

It intersects the x-axis at x = 10

Step-by-step explanation:

Step 1: Find slope m

m = (5 - 1)/(5 - 9)

m = 4/-4

m = -1

y = -x + b

Step 2: Find b

5 = -5 + b

b = 10

Step 3: Rewrite equation

y = -x + 10

Step 4: Find x when y = 0

0 = -x + 10

-10 = -x

x = 10

So the graph crosses the x-axis at 10.

Answer:

Step-by-step explanation:

1/2

(b+1)/2b

quotient = divided by

we're dividing a number that is 1 more than b (b + 1), with a number twice as large as b (2b).