Evaluate 7^2 + (4x5) - 2^3

1 answer:

8 0

Remember PEMDAS! Do the parenthesis first so 4x5 is 20. So now write it out as 7^2+20-2^3 now next is exponents. 7x7 is 49 and -2x-2x-2 is -8. now write it as 49+20+-8. Now solve from left to right. 49+20 is 69 now subtract 8 which is 61. 61 is your answer! I hope this worked!

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$2.4x-4.4$

Step-by-step explanation:

Given the following question:

$0.3(4x-8)-0.5(-2.4x+4)$

To simplify the expression, we are going to need to rewrite the expression by expanding the terms and then solve by using the distributive property. Then we combine like terms in till the expression can no longer be simplified to find our answer.

$0.3(4x-8)-0.5(-2.4x+4)$
$0.3(4x-8)$
$0.3\times4=1.2x$
$0.3\times4=2.4$
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$=2.4x-4.4$

Your answer is "2.4x - 4.4."

Hope this helps.