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3 years ago

Using the technique in the model above, find the missing sides in this 30°-60°-90° right triangle.

Mathematics

2 answers:

valina [46]3 years ago

8 0

Answer:

2 times square root of 3

nydimaria [60]3 years ago

4 0

For this case what you should do is use the following trigonometric relationship:
tan (x) = C.O / C.A
Where
x: angle
C.O: opposite leg
C.A: adjoining catheto
Substituting the values we have:
tan (60) = long / short
tan (60) = long / 2
long = 2 * tan (60)
long = 3.46
Answer:
long = 3.46

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ser-zykov [4K]

Step-by-step explanation:

Both are very correct,

$5 { }^{ - 2} = \frac{1}{25} \: or \: \frac{1}{5 {}^{2} }$

because any number raised to the power of a negative

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2 years ago

78 is what percent of 110

irinina [24]

Answer: 70.909090909091%

Step-by-step explanation: Reading through the problem we have 78 is, that's 78 equals, what percent, x/100, of 110, times 110.

It's important to understand that percent means over 100 so what percent would simply mean x/100 or any variable but I will be using x.

So we have the equation $78 = \frac{x}{100} *110$

So cross canceling the 110 and 100 to 11 and 10, we have $78 = \frac{11x}{10}$

Multiply both sides by 10 to get rid

of the fraction and we have 780 = 11x.

Now divide both sides by 11 and 70.909090909091 = x.

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Work is attached in the image provided.

8 0

3 years ago

Each month, the census bureau mails survey forms to 250,000 households asking questions about the people living in the household

allsm [11]

Answer:

Option D is correct. All US households are among the population of interest.

Step-by-step explanation:

The Census bureau is a national body in the U.S. and they do the survey of 250000 different households monthly. The surveys go out to all corners of the U.S. depending on which part of the nation is doing the survey next.

It shows that the entire U.S. population is of interest to the census bureau.

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3 years ago

I will give brainliest, if it is right, and you are the first person to answer.

sertanlavr [38]

Answer:47.25

Step-by-step explanation: it is 10.5 x the 4.5

7 0

2 years ago

Read 2 more answers

In a right triangle, the acute angles measure ×+15 and 2× degrees. What is the measure of the larger acute angle of the triangle

harkovskaia [24]

Sum of angles in a triangle is 180°

90 + (x + 15) + (2x) = 180

90 + x + 15 + 2x = 180

105 + 3x = 180

3x = 180 - 105

3x = 75

x = 75 ÷ 3

x = 25

Smaller angle = x + 15 = 25 + 15 = 40°

Larger angle = 2x = 2(25) = 50°

Answer: 50°

5 0

3 years ago