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evablogger [386]
3 years ago
11

Add -51 + (-16) - a : - 67 b : 35 C : 67 D : - 35

Mathematics
1 answer:
musickatia [10]3 years ago
6 0
The ANSWER: is
A : -67

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Choose the correct simplification of the expression (−2x + 8y)(9x − 3y).
Romashka-Z-Leto [24]
For these kinds of expressions use FOIL (first, outside, inside, last).

-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2

Now combine them all:

-18x^2 + 78xy - 24y^2
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Manuel has $600 in a savings account at the beginning of the summer. He wants to have at least $300 in the account at the end of
stiks02 [169]
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increase in x results in the decrease in y

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Guys, please help me with this math problem. Thank you so much.
SashulF [63]
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Explanation

First you need to apply the PEMDAS rule

Parentheses
Exponents
Multiplication
Division
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So when solving the problem you first have to solve what’s in Parentheses first. So (9-4) which would equal 5

Next, according to the PEMDAS rule you’d have to do multiplication next. So 3•8 is equal to 24

And finally, the last step is Addition. After you’ve done the Parentheses and Multiplication you have to add up your answers. 5+24 would be 29

Answer= 29
4 0
3 years ago
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