I need help with number 9

Mathematics

1 answer:

ch4aika [34]3 years ago

3 0

Answer:

Step-by-step explanation:

We can safely assume we are dealing with an arithmetic scale because the type of scale isn't mentioned anywhere. The more right a point is on the scale, the higher its value is. We are given two points of the scale: 3 and 4. Because the scale is arithmetic, we know that 3.8 must lie on 4/5s of the length between 3 and 4 to the right of 3, which is exactly where point D is.

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Simplify using the distributive property 4(7 - 2)

solmaris [256]

Answer:

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Step-by-step explanation:

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What is the measure of an angle if it is 70 less than three times its own complement?

anzhelika [568]

Let the angle be x.

Hence, its complement is 90 - x.

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4x = 200

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Thus, the angle is 50°.

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3 years ago

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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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4 years ago

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zavuch27 [327]

the Velocity of the object

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Solve 4/s=-2/9 please help

sergeinik [125]

Answer: 4/15

Step-by-step explanation: