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3 years ago

-5 (-17/2 + 7/2y)-8y=17

Mathematics

2 answers:

Alexxandr [17]3 years ago

6 0

Answer:

Step-by-step explanation:

weeeeeb [17]3 years ago

4 0

The correct answer: y=1

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The measure of angle B is 68 degrees. What is the measure of its supplementary angle?

deff fn [24]

112

suplementry angle add to 180 so 180_68=112

8 0

2 years ago

If the variance of the "number of daily parking tickets issued is 100, the standard deviation is defined as the _____________. A

Alex17521 [72]

Answer:

Square root of the variance of the "number of daily parking tickets"

Step-by-step explanation:

The Standard Deviation is a measure of how spread out numbers are.

Its symbol is σ (the Greek letter sigma)

The formula is easy: it is the square root of the Variance.

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2 years ago

If f(x) = 5x, what is f–1(x)?

Verdich [7]

We are given f(x) = 5x
and we are to find inverse of f(x).

Step 1:
Replace f(x) by y.
So,

y = 5x

Step 2:
Isolate x
So,

x = y/5

Step 3:
Replace x by f'(y)
So,

f'(y) = y/5

Step 4:
Replace all occurrences of y by x.
So,

f'(x) = x/5

Therefore, the inverse of f(x) = 5x is f'(x) = x/5

7 0

3 years ago

Zach wants to build a slanted skateboard ramp. He knows he wants the ramp to form a 15 degrees angle with the ground and be 4 fe

Fynjy0 [20]

Answer: The ramp would be 15.5 feet long.

Step-by-step explanation: Please refer to the attached diagram for details.

Angle C shows the angle to be formed by the ramp from the ground, which is 15 degrees. Also, from the ground, it’s going to be four feet tall, which is line AB. The top of the ramp is point A, which makes line AC the entire length of the ramp. Since we have a reference angle (angle C) and two sides, the opposite and the hypotenuse, we shall apply the trigonometric ratio.

SinC = opposite/hypotenuse

Sin 15 = 4/b

By cross multiplication we now have

b = 4/Sin15

b = 4/0.2588

b = 15.4599

Approximately b = 15.5

Therefore the length of the ramp would be 15.5 feet

6 0

2 years ago

Which weighs more a 20 pound turkey or 320 ounces of turkey stuffing? How do you know?

Keith_Richards [23]

Answer:

They are equal

Step-by-step explanation:

320 oz is 20 pounds:))

7 0

2 years ago