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Lelechka [254]
4 years ago
11

PLEASE ONLY DO IT IF YOU KNOW IT DONT GUESS

Mathematics
2 answers:
cluponka [151]4 years ago
8 0
<em>If x = -4, you now just need to plug it in. (-4*-4)+5(-4)+7

So using the rules of pemdas, we multiply first. So -4 * -4 is 16. 

16 + 5(-4) + 7

Now we multiply again. 5 * -4 = -20

16 + (-20) + 7

Finally, we add. So 16 + -20 + 7 is 3

The answer is 3

Hope that helped! If you dont understand something just ask and i can re explain!</em>
trapecia [35]4 years ago
5 0
You just put -4 in X's place and thats the answer, you can't simplify it. 
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Express the following numbers as a product of their prime factors <br> 24<br> Please show working
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Step-by-step explanation:

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8 0
3 years ago
If a 10-pound turkey costs $20.42.how much does a 21-pound turkey cost
sergij07 [2.7K]

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$42.88

Step-by-step explanation:

Let's create a proportion using the following setup:

cost/pounds=cost/pounds

We know that it costs $20.42 for a 10 pound turkey.

$20.42/10 pounds= cost/pounds

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$20.42/ 10 pounds= $x/ 21 pounds

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We want to find x, by getting x by itself.

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