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3 years ago

Solve for x 4.8 in 3.5 in x 7.6 in

Mathematics

1 answer:

alexandr1967 [171]3 years ago

8 0

Answer:

10.4 in

Step-by-step explanation:

Make a proportion

3.5 in (smaller width) - 7.6 in (larger width)

4.8 in (smaller height) - x in (larger height)

x = $\frac{7.6}{3.5}$ * 4.8 ≈ 10.4 in

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Please hellpppp me I’m stuck

Ber [7]

Answer:

Triple the length, height and width

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3 years ago

15.) whats the approximately measure of one interior angle of the regular polygon shown

kirill115 [55]

Answer:

15) For a regular polygon of N sides, the measure of one interior angle is:

A = (N - 2)*180°/N

In this case, the figure has 11 sides, then we have N = 11, and the measure of each interior angle will be:

A = (11 - 2)*180°/11

A = 9*180°/11 = 147.27°

Rounding to the first decimal after the decimal point, we get:

A = 147.3°

Then the correct option is B.

16) We know that the length of all the sides of a square is the same.

In the image, we can see that the length of the right side is 4, and the length of the top side is 2x + 4

And those lengths must be the same, then we have the equation:

2x + 4 = 4

subtracting 4 in each side of the equation we get:

2x + 4 - 4 = 4 - 4

2x = 0

The only solution for this equation is x = 0.

Then the correct option is C

8 0

3 years ago

Graph y=-2(x-5)(x+1)

Aleks [24]

Answer:

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

Y=2x-10+2x+2

=4x-8

Y =4x-8

5 0

4 years ago

Adam says that the expression 52-3y is equal to 20 when y equal 2.Explain why Adam's answer is incorrect.

larisa [96]

Because when you do 3 x 2=6 and then 52-6 it doesn’t equal 20. It equals 46.

6 0

3 years ago

The diameter of a spindle in a motor is supposed to be 40 mm with standard deviation of 0.5 mm. If the spindle is either too sma

grandymaker [24]

Answer:

It can be used the confidence interval to check the idea.

The confidence interval tells us that the real mean is expected to be between 40.2 and 40.4, with a 95% of confidence.

We can conclude that the mean diameter has moved away from the target value.

Step-by-step explanation:

A method to determine wether the mean diameter has moved away from the target is to calculate a confidence interval over the mean.

This would let us know if the real mean diameter could be 40 mm or not.

If the confidence interval does not include the value 40 mm, we can claim that the mean diameter has moved from the target value.

We will calculate a 95% confidence interval (CI), for which the z-value is z=1.96.

The margin of error is:

$E=z*\sigma/\sqrt{n}=1.96*0.5/\sqrt{100}=0.098\approx 0.1$

Then, the upper and lower limits of the CI are:

$UL=\bar x+z*\sigma/\sqrt{n}=40.3+0.1=40.4\\\\\\ LL=\bar x-z*\sigma/\sqrt{n}=40.3-0.1=40.2$

The confidence interval tells us that the real mean is expected to be between 40.2 and 40.4, with a 95% of confidence.

We can conclude that the mean diameter has moved away from the target value.

8 0

4 years ago