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storchak [24]
3 years ago
10

What is the solution of the equation z +8 = 21?

Mathematics
2 answers:
Anit [1.1K]3 years ago
8 0

Answer: 13

Explanation:

21-8=13

Mumz [18]3 years ago
4 0
13. Subtract 8 from each side.
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I'm a little bit confused about how to approach this can someone help?
Taya2010 [7]

Answer:

4

Step-by-step explanation:

ΔABC is congruent with ΔDEF.  That means the corresponding sides are congruent.

Look at the order of the letters.  EF are the last two letters of ΔDEF.  So this corresponds with the last two letters of ΔABC.  Therefore, EF ≅ BC.

EF ≅ BC

x² + 8x = 48

x² + 8x − 48 = 0

(x + 12) (x − 4) = 0

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Since x can't be negative, x = 4.

5 0
3 years ago
Is it possible for two different numbers, when squared, to give the same result?
lawyer [7]

Actually, yes, it is possible for two different numbers to give the same result when squared.

In my last answer, I wrote that it wasn't, but I realize now where my mistake was made.

When a number like positive 4 is squared, the answer is 16. When a number like negative 4 is squared, the answer is also 16. I think that the only time when two different squared numbers have the same result is when they are the same number but have a different positive/negative sign.

I hope this helps.

7 0
3 years ago
Is -4.08 bigger or smaller than -4.7
Naily [24]
Smaller because it's basicly like a fraction and and the bigger the number the smaller the piece
6 0
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What is brown has a hump and live in the North Pole
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Change the form of the given function y=-2(X-8)^2+128 to the form of y=ax^2+bx+c using order of operations on the given function
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y = 2x² - 32x + 256
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