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alex41 [277]
2 years ago
13

Find the value of x. Round your answer to the nearest tenth.​

Mathematics
2 answers:
SVEN [57.7K]2 years ago
5 0
13.9
it’s a special triangle and that side would be 8√3 which is 13.9
zmey [24]2 years ago
5 0

Answer:

c. 13.9

Step-by-step explanation:

we can work out the third angle

all angles add up to 180

90 + 30 = 120, 180 - 120 = 60

using law of sines

\frac{x}{ \sin(a) }  =  \frac{b}{ \sin(b) }

where sin(a) = 60, b = 30 and sin(b) = 30

\frac{x}{sin(60)}  =  \frac{8}{ \sin(30) }

x =  \frac{8}{sin(30)}  \times  \sin(60)

x = 13.9

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18 questions answered correctly on a test. that is 75% of the total number of questions. How many questions were on the test?
adelina 88 [10]

Answer:

24 = questions on test

Step-by-step explanation:

Questions answered correctly = questions on test * percent answered correctly


We know that she answered 18 correctly and that 75% were answered correctly

Substitute this information into the equation

18 = questions on test *.75

Divide by .75 on each side

18/.75 = questions on test *.75/.75

24 = questions on test

7 0
3 years ago
Which of the following properties completes the proof?
Tresset [83]

The subtraction property of inequality can be used to proof that x = 7 from  x + 8 = 15

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Given that x + 8 = 15

Hence:

x + 8 - 8 = 15 - 8 (subtraction property of inequality)

x = 7

The subtraction property of inequality can be used to proof that x = 7 from  x + 8 = 15

Find out more on equation at: brainly.com/question/2972832

#SPJ1

6 0
2 years ago
How many ways can 7 students come in first, second, and third place in a math contest? Omg one student can earn each place
Lisa [10]
I got 441 times using this formula 7x3^2=x
5 0
3 years ago
Solve the proportion<br> 16/50 = x/156.25
yuradex [85]
The answer for this proportion is 50.
156.25 times 16 =2,500
2,500 divided by 50=50
X=50
4 0
3 years ago
Read 2 more answers
Please help and explain
mr_godi [17]
All but -1 <x <1
_____________
4 0
3 years ago
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