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3 years ago

Assume n is an integer and solve for n.

1 answer:

5 0

|2n - 3| = 5 ⇔ 2n - 3 = -5 or 2n - 3 = 5 |add 3 to both sides

2n = -2 or 2n = 8 |divide both sides by 2

n = -1 or n = 4

Answer: c. {-1; 4}

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Help please I need help :(

maks197457 [2]

A = 1 and 8

B = 2 and 4

C = 2 and 7

I’m pretty sure this is right? I’m still learning too :p

5 0

3 years ago

Read 2 more answers

What quantity of parsley would you need to make 5 times as much as the original recipe?

algol [13]

Original= x

5(x)=y
y= 5Xx

8 0

3 years ago

How many solutions do these have?? PLEASE HELP!!

expeople1 [14]

Answer:

1 - NONE

2 - INFINITE SOLUTIONS

3 - NONE

Step-by-step explanation:

4 0

3 years ago

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

Find the area of the circular border of uniform width around the pool

Let

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

we know that

The diameter of the circular pool measures 10 feet

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

the answer is

The uniform width around the circular pool border is 2.126 ft

7 0

3 years ago

Help plz will give brainliest also it either A or D and show your work if u can

Vlad [161]

Hey... The answer is A

8 0

3 years ago