2 years ago

Find the lengths of the unknown sodes

Mathematics

1 answer:

grandymaker [24]2 years ago

5 0

Answer:

Step-by-step explanation:

24^2+x^=25^2

576+x^2+576

49=X^2

square root 49 and x

x=7

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Twice a number decreased by 8 by 12 is 2 less than half the number what is the number?

natali 33 [55]

Answer:
4
Step-by-step explanation:
with the information given, we can express the equation:

where is the unknown number?
to clear for first we multiply the equation by 2, to eliminate the fraction:

moving all terms with to the left:

and adding +16 to each side:

and finally, dividing by 3

the number is 4.

7 0

2 years ago

Can someone help me please

Andrej [43]

It would be D because the equation just seems flipped, but the requirements of x are fulfilled.

3 0

2 years ago

2y2(35 – 4y) in standard form

Alex73 [517]

Step-by-step explanation:

$2 {y}^{2} (35 - 4y) \\ = 2 {y}^{2} \times 35 - 2 {y}^{2} \times 4y \\ = 70 {y}^{2} - 8 {y}^{3} \\ = \red { \bold{ - 8 {y}^{3} + 70 {y}^{2} }} \\ is \: in \: the \: standard \: form.$