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3 years ago

What is the value of X

Mathematics

2 answers:

MrRa [10]3 years ago

6 0

Every angle is the same so you know what the angle is because in one corner there is a 60 degrees since every angle is 60 degrees and one corner has 3x all you have to do is 60/3 to find x and 60/3 = 20 so x = 20

kozerog [31]3 years ago

4 0

Answer:

x = 20

Step-by-step explanation:

The triangle is isosceles ( 2 congruent sides )

Hence the base angles are congruent, thus

3x = 60 ( divide both sides by 3 )

x = 20

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vlada-n [284]

Answer:

The angle of elevation is 36.87 degrees

Step-by-step explanation:

see the attached figure to better understand the problem

In the right triangle ABC of the figure

$cos(\theta)=\frac{AC}{BC}$ ----> by CAH (adjacent side divided by the hypotenuse)

substitute the given values

$cos(\theta)=\frac{12}{15}$

$\theta=cos^{-1}(\frac{12}{15})=36.87^o$

4 0

3 years ago

If I had five rows under the first row with four units in each , what is the area of my shape

wariber [46]

We know that one row contains four units each and there are five rows. To find out the area of the shape, we do:
5 (row) × 4 (units) = 20 units

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3 years ago

This table shows a proportional relationship between the number of cups of bananas and apples used for a smoothie.

mixer [17]

Answer:

For every 1 cup of banana you have to add 6 cups of apples. So it means there's six times as much apples as there is bananas. If there's 3 cups of apples, which is half of 6, it means the banana would now also have to be halved from 1 to half a cup.

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So 1 cup of apple would need to be divided by 6, to get banana. That would be approximately 1÷6= 0.167 cups

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3 years ago

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MakcuM [25]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

If a researcher wishes to determine whether there is evidence that the mean family income in the U.S. is greater than $30,000, t

Doss [256]

Answer:

B) a one-tailed test should be utilized, in which the region of rejection is in the right (upper tail)

Step-by-step explanation:

Explanation:-

one tailed test:-

A test of any statistical hypothesis where the alternative hypothesis is one tailed test(right tailed or left tailed) is called a one tailed test.

For example, In a test for testing the mean of a population in a single tailed test.

we assume that the null hypothesis H0:μ = μ0 against the alternative hypothesis.

H1:μ > μ0 (right tailed)

H1:μ < μ0 (left tailed) is called one tailed test.

Two tailed test:-

In a test of statistical hypothesis where the alternative hypothesis is two tailed test.

we assume that the null hypothesis H0:μ = μ0

Alternative hypothesis H1 :μ ≠ μ0 is called two tailed test.

Given data

There is evidence that the mean family income in the U.S. is greater than $30,000

we will use right tailed test.

Null hypothesis :- H0:μ = μ0

Alternative hypothesis:-H1 : μ> 30,000 (right tailed test)

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3 years ago