Is a positive plus a negative the same thing as negative plus positive for ex• 4 + (-8) // -8 + 4

Answers

Answer 1

Answer:

You'll come out with the same answer. It's the same concept when one number is negative, it would be different if it were two positive numbers being subtracted.

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What is the answer? Please help! :)

A rectangle has a total perimeter of 108cm. The length is 5 times the width. The dimensions would be 45cm x 9cm, right?

Answers

NO, the dimensions would be (rounded) 23.25 x 4.65

First lets represent
P=perimeter
x=width
5x=length
lxw=p
5x(x)=108
5x^2=108
x^2=21.6
x=4.65cm

What is the median for the numbers 3.60, 3.80, 5.44, 5.52, 5.72, 7.22?I know it's between 5.44 and 5.52

Answers

okay so first of all we need to know the definition of our median first*
median: Given any group of numbers we put the numbers in order from least to greatest then find the number that's right in the middle.
Here ill show you how we do it:)
3.60, 3.80, 5.44, 5.52, 5.72, 7.22?
its already in order for us:)
but when we find the middle number it turns out that we have two middle numbers:/
simple:) all we do is take the two numbers add them together and divide by two
since our middle numbers are 5.44 and 5.52 we are going to use these:)
first add!
5.44 + 5.52 = 10.96
now divide that by 2
10.96 ÷ 2 = 5.48
so our median for this set of numbers is
5.48!
hope this helps;)

The answer is 5.48 because the middle numbers are 5.44 and 5.52 so what you do is find the mean or average of the two numbers by adding them together then dividing them by two, so: (5.44 + 5.52) / 2 = 5.48

What is the solution to the system of equations represented by these two lines?Help
A.
(3, 1)

B.
(3, 0)

C.
(1, 3)

D.
(0, 6)

Answers

the answer for this is A.(3,1).
hope this helps

Find the value of: $27x^(3)+8 y^(3)$ if 3x+2y = 20 and xy = $(14)/(9)$

Answers

$27x^3+8y^3=(3x)^3+(2y)^3=(3x+2y)[(3x)^2-3x\cdot2y+(2y)^2]\n\n=(3x+2y)[(3x)^2+2\cdot3x\cdot2y+(2y)^2-3\cdot3x\cdot2y]\n\n=(3x+2y)[(3x+2y)^2-18xy]=(*)\n---------------------------\n3x+2y=20\n\nxy=(14)/(9)\n------------------------------\n(*)=20\cdot(20^2-19\cdot(14)/(9))=20\cdot(400-18\cdot(14)/(9))=20\cdot(400-2\cdot14)\n\n=20\cdot(400-28)=20\cdot372=7440$

$a^3+b^3=(a+b)(a^2-ab+b^2)\n\n(a+b)^2=a^2+2ab+b^2$

Jenna jump 156 inches in the long jump competition After High School track meet how many feet did Jenna jump

Answers

well lets think about it you need to make inches into feet
if they are telling us the units in inches so if we know i foot has 12 inches we would have to divide 156 by 12
156/12 =13
so that means she jumped 13 feet in long jump!

13 feet hears how:
156/12=13

divide it

Hope this helps

Can you explain how complex fractions can be used to solve problems involving ratios?

Answers

example: (1/5)/(4/13)=(1/5)*(13/4)=13/20

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