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2 years ago

I’ll give brainliest pls help

Mathematics

1 answer:

andrew11 [14]2 years ago

7 0

Answer:

The slopes of WX and XZ

Step-by-step explanation:

The singular factor that determines if the parallelogram is a rectangle are the angles at the edges

Mathematically, we can only have a rectangle if there are four right angles with one right angle each at the edges of the rectangle

So, by having the slope of the sides forming the width and that which forms the length, we can deduce if what we have is rectangle given that the slopes will yield a perpendicular product

Hence, the slopes of WX and XZ can be calculated to show this

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3х – 12 = 5х – 31 How do I solve this

yaroslaw [1]

Answer: x = 9.5

Step-by-step explanation:

3x - 12 = 5x - 31

First, add 31 to each side.

We get:

3x + 19 = 5x

Subtract 3x from each side.

We get:

19 = 2x

Divide both side by 2

9.5 = x

8 0

3 years ago

In monitoring lead in the air after the explosion at the battery factory, it is found that the amounts of lead over a 7 day peri

Andrew [12]

Answer:

$MOE=\pm \ 1.41$

Step-by-step explanation:

-Given that $\sigma=1.91, n=7$

-We determine the z-value corresponding to the 95% confidence level:

$z_{\alpha/2}=z_{0.025}=1.96$

-The margin of error is the degree of error from the real value and is calculated as follows:

$MOE=\pm z_{\alpha/2} (\frac{\sigma}{\sqrt{n}})\\\\=\pm z_{0.025}\times\frac{\sigma}{\sqrt{n}}\\\\=\pm 1.96\times \frac{1.91}{\sqrt{7}}\\\\=\pm 1.41$

Hence, the margin of error is $\pm 1.41$

7 0

3 years ago

the regression equation y=-0.414 + 106.55 approximates the percent of people in an audience who finish watching a documentary, y

WARRIOR [948]

Answer:

The answer is: 59%.

Step-by-step explanation:

To calculate the percentage of people who have seen the movie we start from: y = -0.414x + 106.55; and of x = 115; making the appropriate substitutions we would have left: y = -0.414 (115) + 106.55; y = -47.61 + 106.55; y = 58.94, which rounded to exceed 0.5 would be 59%.

The answer is: 59%.

4 0

3 years ago

Read 2 more answers

Michael is headed to his aunt’s house. For the first 2 hours he drives at 55 mph. For next hour, he drives 70 mph. For the final

mina [271]

Answer: 280 miles I think

Step-by-step explanation:

At first, he drives 110. Then hes at the 180 mile mark. And at the end he is at 280. 110 + 70 + 100. I’m very sorry if I’m wrong.

5 0

2 years ago

Read 2 more answers