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Bingel [31]
2 years ago
12

What is the value of x?

Mathematics
1 answer:
andre [41]2 years ago
5 0

Answer:

D.11.1

Step-by-step explanation:

first, let's use the SOHCAHTOA strategy. for people that don't know, it means:

Sine(angle)= side Opposite to the angle/Hypotenuse (SOH)

Cosine(angle)= side Adjacent to the angle/Hypotenuse (CAH)

Tangent(angle)= side Opposite to the angle/side Adjacent to the angle (TOA)

now, since the question describes both the hypotenuse and the side opposite to the angle, we will use Sine to find the length, according to the SOHCAHTOA strategy. This means that the equation will be:

Sin(46)=8/x

Now, we punch in the first half of our equation, Sin(46), into the calculator. it should pop up as:

Sin(46)=0.7193398

now, we substitute that in our original equation, and make it like this:

0.7193398=8/11.1

now, everything will be pretty easy. First, round the decimal into something easier, in this case, 18/25. Now, the equation will be:

18/25=8/x

from here, we can cross multiply to get the x. your fraction should be:

18x/200

so, x=200/18. convert it into a decimal, we get:

11.1111111...

now, we find the number closest to 11.11, which is 11.1, making the answer 11.1, or D.

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7 0
3 years ago
Consumer Reports indicated that the average life of a refrigerator before replacement is 14 years with a standard deviation of 2
guajiro [1.7K]

Answer:

a.) Average life of a refrigerator

b.) 0.1151

c.) 0.0548

d.) 0.6472225

Step-by-step explanation:

Given that :

Average life before replacement, mean, m = 14 years

Standard deviation, σ = 2 years

A.)

The random variable is the variable which is being measured.

B.) What is the probability that someone will keep a refrigerator fewer than 11 years before replacement?

Fewer than 11 years, P(x < 11)

We need to obtain the Z probability, at P(Z < 11)

The Zscore = (x - mean) / standard deviation

Zscore = (11 - 14) / 2.5 = - 1.2

P(Z < - 1.2) = 0.1151

C.) What is the probability that someone will keep a refrigerator more than 18 years before replacement?

More than 18 years, P(x > 18)

We need to obtain the Z probability, at P(Z > 18)

The Zscore = (x - mean) / standard deviation

Zscore = (18 - 14) / 2.5 = 1.6

P(Z > 1.6) = 0.0548

D.) What is the probability that someone will replace a refrigerator between 8 and 15 years?

P(x < 8)

The Zscore = (x - mean) / standard deviation

Zscore = (8 - 14) / 2.5 = - 2.4

P(Z < - 2.4) = 0.0081975

P(x < 15)

The Zscore = (x - mean) / standard deviation

Zscore = (15 - 14) / 2.5 = 0.4

P(Z < 0.4) = 0.65542

P(Z < 0.4) - P(Z < - 2.4)

0.65542 - 0.0081975 = 0.6472225

5 0
4 years ago
Mindy and Troy ate total of 9 pieces of the wedding cake. Mindy ate 3 pieces and Troy ate 1/4 of the total cake. Write an equati
Arlecino [84]

Answer:

I. x + y = 9

II. x = 3

III. y/c = 1/4 --> y = 1/4*c

II and III in I

3 + 1/4*c = 9 --> c = 24


6 0
3 years ago
1+1
Stells [14]
The answer would be more likely 2
3 0
4 years ago
Read 2 more answers
3.8y+4/7x+2=0 for y =?
tia_tia [17]
<span> y=(-4/7x-2)8/3 is the correct awnser to your question.</span>
6 0
3 years ago
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