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Hatshy [7]
3 years ago
15

If y varies inversely with x, and y = -16 when x = -64, what is the constant of variation?

Mathematics
2 answers:
Ede4ka [16]3 years ago
6 0
Answer is (d).

Let's take the constant as K.

y=K. (1/x)
K = yx
K = (-16) x (-64)
K = 1024
kupik [55]3 years ago
4 0

Answer:

The correct answer is D, 1,024.

Step-by-step explanation:

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If sam works for 40 hours every week and makes 610$ every week how much does he make per hour
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$15.25

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All you have to do is divide 610 by 40

610 ÷ 40 = 15.25

Therefore, $15.25 is how much Sam makes per hour.

Hope this helps ya!

5 0
3 years ago
Anyone that can help me with this please?Not soo good at math.​
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As it is right angled , we can use pythagoras theorem.

Using the therorem :

(x+2)² + (4x+4)² = (5x)²

x² + 4x + 4 + 16x² + 32x + 16 = 25x²

25x² - 17x² - 36x - 20 = 0

8x² - 36x - 20 = 0

2x² - 9x - 5 = 0

2x² -10x + x - 5 =0

2x(x-5) + 1(x-5) =0

(x-5)(2x+1) = 0

x = 5 or x = -1/2

x cannot be -1/2 as it would make hypotenuse negative.

So x = 5

Sides are 7 m, 24 m , 25 m

The area = 1/2 × base × height

Area = 1/2 × 24 × 7 = 84 m²

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3 years ago
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An 18 foot ladder is leaned against a wall if the base of the ladder is 8 feet from the wall how high up on the wall will the la
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Step-by-step explanation:

Check attachment

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Write an exponential function in the form y=ab^x that goes through points (0, 18) and (2, 288)
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y = abx

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From 4=ab we have a = 4/b

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An exponential function that fits is: y = 2(2^x)

check: x=1; y = 2(21) = 4 ... point (1, 4)

x=3: y = 2(23) = 2(8) = 16 ... point (3, 16)

5 0
3 years ago
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