3 years ago

Wefnwiaedfgaeraeoefmwek :

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

7 0

Answer:

whatdoesthatmean

Step-by-step explanation:

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Find the highest common factor (HCF) of 12 and 20.

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PLEASE HELP ME. ANSWER THIS FAST 20 POINTS FOR IT!

9966 [12]

Answer:

(<) this means less than

(>) this means greater than

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or in other words

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Step-by-step explanation:

5 0

3 years ago

If y varies directly as the x^2 and y = 200 when x = 5, what is the value of y when x = -3?

gayaneshka [121]

As the variation is direct we have:
$y = kx ^ 2
$
We must find the value of k.
For this, we use the following data:
y = 200 when x = 5
Substituting values we have:
$200 = k5 ^ 2
$
Clearing k:
$k = 200/5 ^ 2

k = 200/25

k = 8$
Then, the function is:
$y = 8x ^ 2
$
We evaluate the function for x = -3
$y = 8 (-3) ^ 2

y = 8 (9)

y = 72$
Answer:
the value of y when x = -3 is:
c.
72

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3 years ago