Y =3x -1 has a gradient of 3. Write the equation of a line parallel to itPlease tell me the answer and how to do this

Answers

Answer 1

Answer: -3x+1 just do the opposite

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Penn buys a large sub sandwich to serve at a party. Penn cuts the sandwich into equal peoces to serve 8 guests. Write an equation to represent the portion, p, that each guests receives?

Answers

Let s represent the sandwich and p represent the portion
s=8p

What is the median of, 18, 16, 13, 10, 9.5, 8.5, 7.5, and six????

Answers

you have to fist pot them in order 6, 7.5, 8.5, 9.5, 10, 13, 16, 18

so the middle numbers are 9.5 and 10

add them together 9.5+10=19.5 then divide by 2 so 19.5/2=9.75 that is you answer

18 |16 | 13 | 10 | 9.5 | 8.5 | 7.5 | 6

9.75 is the FINAL answer

Can some figure this out

Answers

Hello,

As 4²+(5/2)²=22.25=89/4 (Pytagorean theorem)
Perimeter of the triangle =2*√89 /2 +5 =5+√89
Lateral area: 18*(5+√89)
Total area= 90+18√89+ 4*5/2 *2 =110+18√89 ≈279.811..(ft²)

What is the square root of 25/9?

Answers

The square root of 25/9 is 5/3

square root of 25 = 5
square root of 9 = 3
therefore the square root of 25/9 = 5/3

Can anyone please help me with 1,2,&,3 ?

Answers

Okay, lets start with number 1.

$(x+3)^(3)$ is also equal to (x+3)(x+3)(x+3)

If you take the first two ones and multiple them out it ends up with $x^(2) + 3x +3x + 9$ or also know as $x^(2) + 6x + 9$

You see to multiply them you take the first number in the first group of parenthesis and use the distributive property on the second equation, then you do the same this but with the second number in the first equation.

So once you have $(x^(2) + 6x + 9)$ you multiply it with your remaining (x + 3) using the distributive property to get $x^3 + 9x^2 + 27x + 27$

I hope this helps you get the answers for the other two.

(x+3)^3 = x^3+9x^2+27x+27

(x+2)(x-2)(x^2+4) = x^4-16

(x-2)^2+1 = x^2-4x+5

18% of 90 is what number?

Answers

90/x=100/18
(90/x)*x=(100/18)*x - multiply both sides of the equation by x
90=5.55555555556*x - divide both sides of the equation by (5.55555555556) to get x
90/5.55555555556=x
16.2=x
x=16.2
18% of 90=16.2

The answer to you problem is 16.2, the equation you needed was, 90/0.18

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