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Soloha48 [4]
4 years ago
13

What is the value of x? x = ___

Mathematics
1 answer:
alisha [4.7K]4 years ago
8 0
<h2>Greetings!</h2>

Answer:

x = 8°

Step-by-step explanation:

Because this triangle is an equilateral triangle, as indicated by the lines which say all lines are congruent, it means every angle, R S and T, are exactly the same amount. 60°

This means that angle S = 60 so:

7x +4 = 60

Simply move the 4 over to the other side, making it a negative:

7x = 60 - 4

7x = 56

So now simply divide both sides by 7:

\frac{7x}{7} = \frac{56}{7}

x = 8

<h3>So the value of x is 8°!</h3>
<h2>Hope this helps!</h2>
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A student is finding the measures of the angles in a triangle that have the ratio 4:4:7. Find the mistake and correct it.
7nadin3 [17]

suppose 4:4:7 be 4x, 4x, 7x

or, 15x = 180°

or, X = 180/15

or, X = 12

therefore,

4x = 4x12= 48

4x= 4x12= 48

7x= 7x12= 84

so if you plus all of them you get 180

8 0
2 years ago
Calculate the standard deviation. Variance = 107.76. Mean = 34.2
Llana [10]

Answer:

The standard deviation is 10.38

Step-by-step explanation:

Given;

Variance, v = 107.76

mean, x = 34.2

The standard deviation is given by;

standard deviation = √variance

standard deviation = √107.76

standard deviation =  10.381

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Therefore, the standard deviation is 10.38

8 0
3 years ago
For brainiest:):):):):):)):)
liq [111]

Answer:

Step-by-step explanation:

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6 0
3 years ago
How many 2-letter combinations can be created from the distinct letters in the word "mathematician"? Assume that the
Rzqust [24]

Answer:

Option A.

Step-by-step explanation:

The given word is "mathematician".

Here, total number of letter is 13 and  

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We need to select 2 distinct letters from word "mathematician".

It means we need to select 2 letters from 8 distinct letters.

Total ways =^8C_2

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4 0
4 years ago
The area of the right triangle shown is 24 square feet.
Liula [17]

Answer:

A, 0.5(x)(x+2)=24, D, x²+2x-48=0, and E, x²+(x+2)²=100

Step-by-step explanation:

A and D are correct because they simply involve the Area of a Triangle formula. A has the formula in the same format, but D has the 0.5 divided from by both sides.

E, on the other hand, uses the Pythagorean theorem to solve for both legs.

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