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2 years ago

13

Helpplease explain step by step!!!help help help help help help

2 answers:

LenKa [72]2 years ago

8 0

Wait let me calculate in my mind

vredina [299]2 years ago

7 0

Answer:

Mag kape ka nalang wag kana mag module

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Prove that for every pair of integers m and n, if n − m is even, then n 2 − m is also even. (You may freely use the fact that th

Romashka [77]

Answer with Step-by-step explanation:

We are given that n and m are two integers

We have to prove that if n-m is even , then $n^2-m$ is also even.

We know that sum of two odd numbers is even.Sum of an odd number and even number is odd.

Product of an odd number and even number is even.

Case 1.Suppose m and n are both even n=4 , m=2

$4-2=2$

$(4)^2-2=14 =Even$

Case 2.Suppose m odd and n odd

n=9,m=5

$9-5=4$

$(9)^2-5=76=Even$

Hence, proved.

7 0

2 years ago

I need step by step help on how to work out this percentage question

11Alexandr11 [23.1K]

Answer:

$15.7, $141.3

Step-by-step explanation:

Discount

157*0.1 = $15.7

Sale price

157 - 15.7 = $141.3

8 0

2 years ago

The sum of the areas of two circles is 80n square meters. Find the length of a radius of each circle if

astra-53 [7]

Answer:

8 meters.

Step-by-step explanation:

Let the 2 radii be x and 2x, then
π x^2 + π (2x)^2 = 80π

π x^2 + π 4x^2= 80π

x^2 + 4x^2= 80

5x^2 = 80

x^2 = 16

x = 4.

So the radius of the larger circle = 2*4 = 8 m.

4 0

1 year ago

What do I have to do in this math problem

Mars2501 [29]

Put 7 random dot on a graph , wat shape does it make?

8 0

2 years ago

Read 2 more answers

How many solutions does the following equation have?<br><br> 3x + 6 = 3(x + 2)

kow [346]

3x+6=3(x+2)
3x+6=3x+6
minus 6 both sides
3x=3x
divide by 3
x=x

true

therefor all numbers work for x

there are infinite soltuions

8 0

2 years ago