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2 years ago

What is the value of x?Please help ✨

Mathematics

1 answer:

mestny [16]2 years ago

6 0

To solve this problem, we must remember that vertical angles (angles that are across from one another as <TRS and <VRW are above) have the same measure, they are equivalent. This means that we can set up an equation that sets the measures of these two angles equal to one another, as shown below:

x + 40 = 3x

To solve this equation, we will begin by subtracting x from both sides of the equation so that all of the variable terms are on the right side of the equation.

40 = 2x

Next, we should divide both sides of the equation by 2 so that we can get the variable x alone on the right side of the equation and cancel out its coefficient of 2.

x = 20

Therefore, your answer is x=20 (the first option listed).

Hope this helps!

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Consider a manufacturing process that is producing hypodermic needles that will be used for blood donations. These needles need

Mars2501 [29]

Answer:

$\text{Average diameter is 1.65 mm and we decide that it is not 1.65 mm.}$

Step-by-step explanation:

We are given the following in the question:

The needle size should not be too big and too small.

The diameter of the needle should be 1.65 mm.

We design the null and the alternate hypothesis

$H_{0}: \mu = 1.65\text{ mm}\\H_A: \mu \neq 1.65\text{ mm}$

Sample size, n = 35

Sample mean, $\bar{x}$ = 1.64 mm

Sample standard deviation, s = 0.07 mm

Type I error:

It is the error of rejecting the null hypothesis when it is true.
It is also known as false positive error.
It is the rejecting of a true null hypothesis.

Thus, type I error in this study would mean we reject the null hypothesis that the average diameter is 1.65 mm but actually the average diameters of the needle is 1.65 mm.

Thus, average diameter is 1.65 mm and we decide that it is not 1.65 mm.

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3 years ago

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lara31 [8.8K]

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3 years ago

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Fittoniya [83]

Answer:

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3 years ago

Determine the value of y, if x is -2.<br> y = x² +8

KiRa [710]

Answer:

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2 years ago

54.85 rounded to the nearest 1/10th percent

Iteru [2.4K]

Answer:

54.9

Step-by-step explanation:

You always round up if its 0.5 or anything .5

54.58 broken down:

The 5 is the Tens place

The 4 is the Ones place

The 8 is the Tenth place (what the question is asking for)

The 5 is the Hundredths place.

:) Hope this helps! Please mark brainliest! :)

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2 years ago