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Vinvika [58]
3 years ago
10

Solve 8 and 9 and show work

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
4 0
Looking at D:  If you subtract 8 from both sides of this inequality, you obtain 

x<-11, which is the correct answer.
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Select the correct answer. This table represents a quadratic function. x y 0 -3 1 -3.75 2 -4 3 -3.75 4 -3 5 -1.75
lana [24]

Answer:

1/4

Step-by-step explanation:

that is the answer

I found the constant which was -3

a = 1/4

b=-1

7 0
3 years ago
I need help on a problem ​
kompoz [17]

Answer:

cool

Step-by-step explanation:

2v + 7 = 3

    - 7     - 7

2v = - 4

v = - 2

8 0
3 years ago
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A circular pool measures 10 feet across. one cubic yard of concrete is to be used to create a circular border of uniform width a
mina [271]

we know that

1 ft is equal to 12 in

1 cubic yard is equal to 27 cubic​ feet

Step 1

<u>Find the area of the circular border of uniform width around the pool</u>

Let

x---------> the uniform width around the pool    

we know that

The diameter of the circular pool measures 10 feet

so

the radius r=5 ft

the area of the circular border is equal to

A=\pi *(5+x)^{2}- \pi *5^{2} \\A= \pi *[(x+5) ^{2}-5^{2} ] \\ A= \pi * [x^{2} +10x]

step 2

volume of the concrete to be used to create a circular border is equal to

V=1 yd^{3}-------> convert to ft^{3}

V=27 ft^{3} -------> equation 1

the depth is equal to 4 in-------> convert to ft

depth=4/12=(1/3) ft

volume of the concrete to be used to create a circular border is also equal to

V=Area of the circular border*Depth

V= \pi * [x^{2} +10x]*(1/3) -------> equation 2

equate equation 1 and equation 2

27=\pi * [x^{2} +10x]*(1/3) \\ x^{2} +10x- \frac{81}{\pi }=0

using a graph tool------> to resolve the second order equation

see the attached figure

the solution is the point

x=2.126 ft

therefore

<u>the answer is</u>

The uniform width around the circular pool border is 2.126 ft

7 0
3 years ago
9=v divided by 5 solve.
sp2606 [1]

Answer:

45= v

Step-by-step explanation:

9 = v/5

Multiply each side by 5

9*5 = v/5*5

45 =v

7 0
3 years ago
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Need to know the equivalent ratio for 24:20=6:x
evablogger [386]
24:20=6:x\\\\\frac{24}{20}=\frac{6}{x}\ \ \ \ \ |cross\ multiply\\\\24x=20\times6\\\\24x=120\ \ \ \ \ |divide\ both\ sides\ by\ 24\\\\\boxed{x=5}

4 0
3 years ago
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