three friends earned more than $200 washing cars. they paid their parents $28 for supplies and divided the rest of money equally. write an inequality to find possible amounts each friend earned. identify what your variable represents.

Answers

Answer 1

Answer: Let the original amount they earned be x.

They earned more than $200, therefore x > 200

They paid their parents $28, assuming all the parents got $28

So we remove 28 from both sides of the inequality

x -28> 200-28

Let y be the amount left after paying their parents, and replace (x -28) with y in the inequality above.

y> 200-28

y> 172

Amount each got, divide both sides of the inequality by 3.

y/3 > 172/3

Let amount each got after dividing equally be z, replace (y/3) with z in the inequality above

z > 172/3

z > 57.33

Each got more than $57.33

Answer 2

Answer: 28x+86≤200 because for supplies they divide the rest of money. that means, 200-28=172 so 172/2=86 now we gonna find the value of x.
28x+86≤200 i am gonna subtract 86 both of side 28x+86-86≤200-86 to get value of x.
28x≤114 divide 28 both of side to get value of x so it will be x≤4

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Solve for X: 2 ( × - 3 ) = 1.2-x

Answers

when solving an equation, you must do the same thing to both sides or else it won't be equal

when dealing with one unknown (x) try to get the unknown on one side

2(x-3)=1.2-x
distribute or multiply 2 by x then -3

so (2 times x)+(2 times -3[remember negative times positive=negative])
2x-6=1.2-x
add 6 to both sides
2x=7.2-x
add x to both sides
3x=7.2
divide both sides by 3
x=2.4

2(x-3) = 1.2-x
2x-6 = 1.2-x
2x+x = 1.2+6
3x = 7.2
3x/3 = 7.2/3
x = 2.4

A duck flew at 18 miles per hour for 3 hours,then at 15 miles per hour for 2 hours. How far
did the duck fly in all?

A. 69 miles
B. 75 miles
C. 81 miles
D. 84 miles

Answers

First, you do 18 miles times 3 hours.
The answer is 54
The you do 15 miles time 2 hours
The answer is 30
You can add them all up and get 84 miles total. (D)

The duck flew 84 miles in all

Find the surface area of the prism.
It is ___inches squared.

Answers

Answer:

Should be 132 square feet.

Step-by-step explanation:

(Triangle surface area = 1/2 × width × length)

(square surface area = width × length)

Now you just add the surface area of all the faces.

If this is correct pls mark me brainly tyy :).

132 square feet because once you do all of the math it’s 132

Divide 2 1/2 by 1 5/8=

Answers

1) Convert the mixed numbers into improper fractions (ex. 2 1/3 ÷ 4 1/2= 7/3 ÷9/2)
2) Find the reciprocal of the SECOND number. Then change the division sign to a multiplication sign. (ex. 7/3 ÷ 9/2=7/3×2/9)
3)Multiply and you've got your answer! (ex. 7/3×2/9=14/27)
Hope this helped!

Convert 2 1/2 into an improper fraction, that should be 5/2.
Now converg 1 5/8 into an improper fraction and and its 13/8

Then set up the divsion problem and flip 13/8 into 8/13 and cross reduce to give you 5/1 times 13/4 qnd multiply qnd then tuen it back into a mixed number and the anwser is 1 17/13

You make a large bowl of salad to share with your friends. Your brother eats 1/3 of it before they come over. You want to divide the leftover salad evenly among six friends. What expression describes the situation? Explain

Answers

The expression which describe the situation is,

⇒ (1 - 1/3) × 1/6

What is an expression?

Expression in math is defined as the collection of the numbers, variables and functions by using signs like addition, subtraction, multiplication, and division

Given that;

When you make a large bowl of salad with your friends. Your brother eats 1/3 of it.

Now,

Let total amount of salad = 1

Amount of salad after brother eating = 1 - 1/3 = 2/3

And, Amount of salad for diving into 6 friends = 2/3 × 1/6

= 1/9

So, Each friend get 1/9 of a salad.

Thus, The expression which describe the situation is,

⇒ (1 - 1/3) × 1/6

Learn more about the mathematical expression visit:

brainly.com/question/28371309