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3 years ago

Use any method to solve the equation. If necessary, round to the nearest hundredth.7x2 − 16x = 8

1 answer:

4 0

7x^2 - 16x - 8 = 0

using the quadratic formula x = [ -(-16)+/- sqrt((-16^2 - 4*7-8] / 2*7

= (16 +/1 sqrt 480) / 14

= 2.71, -0.42 to nearest hundredth

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If 50% of a number is 300, what is the numbers?

kotegsom [21]

50 per cent can also be termed as a half of the number.

therefore 300 is a ½ of the original number

300 multiplied by 2

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4 years ago

8 divided by 6.403 round to the nearest tenths

lions [1.4K]

I believe the answer is 1.2

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4 years ago

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Paul's car is 16 feet long. He is making a model of his car that is the actual size. What is the length of the model?

Alexandra [31]

Answer:

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3 years ago

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Find the area of the trapezoid. Leave your answer in simplest radical form.

sveticcg [70]

Answer:

64√3 ft²

Step-by-step explanation:

The short leg of the triangle has length (8 ft)(cos 60°), or (8 ft)(1/2), or 4 ft.

The long leg (represented by the dashed line) is (8 ft)(sin 60°), or

(8 ft)(√3/2), or 4√3. This is also the width of the horizontal trapezoid.

The area of this horizontal trapezoid is:

(sum of horizontal sides)

A = ------------------------------------- * (width)

Here, the area is:

(18 ft + (18 ft - 4 ft)

= ------------------------------------- * (4√3)

32 ft

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3 years ago

Rafi has a board of 15 1/2 feet long. He cut three pieces of the board that are each 3 7/8 feet long. How much of the board is l

Bumek [7]

3 7/8 is left.

multiple 3 7/8 by 3 since there's 3 pieces cut.
then subtract 15 1/2 by 11 5/8 (the sum of the 3 boards) and you get your answer.

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4 years ago

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