PLEASE HELP! I WILL MARK YOU AS BRAINLIEST!

Answers

Answer 1

Answer: number three the first one number 4 the 3rd one

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The sun of two number is 23. Their difference is 9. Write a system of equations to represent the situation. What are the two numbers?

Answers

Let one number be x
and second number be y
ATQ
x + y = 23 ---> 1st equation
similarly,
x - y = 9 ----> 2nd equation
( adding y on both sides )
x = 9 + y -----> 3rd equation
Substituting 3rd equation in 1st equation or substituting value of x in 1st equation.
9 + y + y = 23
( adding like terms on each side)
9 + 2y = 23
( subtracting 9 from both sides)
2y = 23 - 9
2y = 14
( Dividing 2 from both sides )
y = 7

Substituting value of Y in 1st equation
x + 7 = 23
( subtracting 7 from both sides )
x = 16

So, two numbers are 7 & 16
or
x = 16 & y = 7

Hope this helps you :)

x+y=23
x-y=9
subtract the second from the first and you get 2y=14
Divide 2 from both side so y=7
and since x+7=23, x=16
so the final answer is x=16, y=7

Name an improper fraction that can be written as a whole number

Answers

18/9. which is 18 over 9. this is because 9 goes into 18 twice.

30% of what number is 42?

Answers

30% of 140 is 42. 42/3 is 14 and 14*10 is 140.

~PRE AP ALGEBRA!~- Simplify each expression:

1. 5 (8) (10)
2. 1/2 (6) (12)
3. 1/3 (3) (12)
4. 1/2 ( $8^(2)$ ) (4)
5. 1/4 ( $10^(2)$ ) (15)
6. 1/3 ( $9^(2)$ ) (6)

Answers

1. 5 (8) (10) = 5 (80) = 400

2. 1/2 (6) (12) = (3) (12) = 36

3. 1/3 (3) (12) = (1) (12) = 12

4. 1/2 (8²) (4) = (8²) (2) = (64) (2) = 128

5. 1/4 (10²) (15) = 1/4 (100) (15) = (25) (15) = 375

6. 1/3 (9²) (6) = (9²) (2) = (81) (2) = 162

There is a line that includes the point (-1, -1) and has a slope of 0. What is its equation in slope-intercept form?

Answers

Answer:

y=-1

Step-by-step explanation:

The slope intercept form of a line is

y = mx +b where m is the slope and b is the y intercept

We know the slope is zero

y = 0x+ b

Substituting the values for x=-1 and y=-1 from the point we are given

-1 =0 +b

b=-1

Putting this into the original equation

y = 0x+-1

y=-1

For this question explainition should be proper

Answers

Answer:

960m

Step-by-step explanation:

10×8×3×4×xcm

960m

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What is the answer??

Kevin can travel 22 1/2 miles and one third of an hour what is his average speed in miles per hour

A ________ is a whole number that divides another whole number with a remainder of 0