3 years ago

Please help! files attached.

1 answer:

5 0

The first question would be x + (x + 4). This is because Max has $x and Keisha has (x + 4) because she has four MORE THAN Max. I am pretty sure that the second one is A, but I am not positive. The first one is right though. I hope this helps!!!

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Describe the solution steps of 20 + 4x = 16.

andriy [413]

Answer: -1

Solution:
20 + 4x = 16
Rearrange the terms

4x = 16 - 20
Calculate

4x = -4
Divide both sides

x = -4/4
Simplify

x = -1

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3 years ago

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The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b

alexdok [17]

$a-b=21 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\times (-2) \\
5a-2b=18 \\ \\
-2a+2b=-42 \\
\underline{5a-2b=18 \ \ \ \ \ \ \ } \\
5a-2a=18-42 \\ 3a=-24 \\
a=\frac{-24}{3} \\
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a-b=21 \\
-8-b=21 \\
-b=21+8 \\
-b=29 \\
b=-29$

a=-8 and b=-29.

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4 years ago

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Explain why the numerical expression 3 less than 16 is written as 16 - 3 and not 3 - 16

Savatey [412]

It is written as 16-3 because it is 16 subtract 3 not 3 subtract 16 because that would come out to a negative integer.

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3 years ago

Please help. Use PEMDAS

german

This order,

P: Parentheses

E: Exponents

M: Multiplication

D: Division

A: Addition

S: Subtraction

4 0