What do zero pairs not do?

Answers

Answer 1
Answer:

Answer:

They do nothing

Step-by-step explanation:

Answer 2
Answer:

Answer:

they do nothing it zero pairs

Step-by-step explanation:


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Which equation represents this statement? One-third of a number is 21.

Solve the following proportion forv/11 = 7/3

Round your answer to the nearest tenth.

Answers

The value of v as per the given proportion is 25.7.

To solve the proportion:

v/11 = 7/3

We can cross-multiply to get:

3v = 77

Dividing both sides by 3, we get:

v = 25.7

Rounding to the nearesttenth, we get:

v ≈ 25.7

Therefore, the solution to the proportion is v ≈ 25.7.

Learn more about proportionalities here:

brainly.com/question/3254974

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v/11 = 7/3
We take the 11 and multiply
v=7/3 * 11
v= 77/3
v= 25.7

sand is falling at the rate 27 cubic feet per minute onto a conical pile whose radius is always equal to its height. how fast is the height of the pile growing when the height is exactly (a) 3 feet (b) 6 feet (c) 9 feet.

Answers

Answer:

Step-by-step explanation:

The formula for the volume of a cone is V = (1/3)(area of base)(height).  If the radius is always equal to the height of the cone, then V = (1/3)(πh²)(h), where we have eliminated r.  Shortened, this comes out to V = (1/3)(π)(h³).  

We want to know how fast h is increasing when h = 3 ft.

Taking the derivative dV/dt, we get dV/dt = (1/3)π(3h²)(dh/dt), or, in simpler terms, dV/dt = πh²(dh/dt).  Set this derivative = to 27 ft³/min and set h = 3 ft.

Then 27 ft³/min = π(3 ft)²(dh/dt) and solve for dh/dt:  (3/π) ft/min = dh/dt when h = 3 ft.

How many different 5-person subcommittees can be formed from a club having 12 members

Answers

Given that there are 12 persons, the first choice may be in 12 different ways, the second choice may be in 11 different ways, ther third in 10 different ways, the fourth in 9 different ways and the fith in 8 different ways, for a total of:

12x11x10x9x8 different combinations.

Now you have to take in account that 5x4x3x2 are repetitions. So you have to divide the previos counting by 5x4x3x2.

(12x11x10x9x8)/(5x4x3x2) = 792 different subcommittees.

Also, you can use the formula for combinations: C(m,n) = m! / (n! (m-n)!)

C (12, 5) = 12! / (5!) (12-5)! = [12x11x10x9x8x7!] / [5! 7!] = [12x11x10x9x8]/[5x4x3x2] = 792

what is 2.1 rounded to the nearest tenth?

Answers

the answer should be 2.0


2.1 is rounded to the nearest tenth

.1 is a tenth

.01 is hundredth

PLEASE HURRY IM BEING TIMED

Answers

Answer: -3

Step-by-step explanation: I GOT YOU BRO

The length of a rectangular mural is 2ft. more than three times the width the area is 165 sq. ft. Find the Width And Length

Answers

We know that the formula for the area of a rectangle is: 

A=lw 

We know that the area is 165. Now we need to solve for the dimensions. 

Let the width of the rectangle be "x"

Then the length of the rectangle is 3x+2 

Substitute. 

(3x+2)(x)=156 

Multiply the terms. 

3x^2+2x=156 

Bring the 156 over. 

3x^2+2x-156=0 

We have to use the quadratic formula to solve this now. Let us restate it: 

x= (-b± √(b^2-4ac) )/(2a)

Now I'm going to fast forward this because all the rest is boring stuff and substitution. The answer is: 

( √(469)-1 )/(3)

Since we cannot have a negative answer, we must cancel out the other answer, which I did not include. 

Hope this helped! :) 

~Cam943, Junior Moderator
l×b=area
l=2+3b
2+3b ×b=165
3b²=163
b²=54.3
b=√54.3
b=7.37 or 7.4=7
b=7ft
l=2+3(7.4)
l=2+ 22.2
l=24.2=24
l=24ft