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2 years ago

Use a trigonometric function to find each value of x. Round to the nearest tenth if necessary.

Mathematics

1 answer:

Ulleksa [173]2 years ago

4 0

Answer:

4.0

Step-by-step explanation:

Using trig identity Tangent, tangent is equal to opposite / adjacent side. Therefore tan30 = x/7, because x is the side opposite to 30 degrees and it is adjacent to 7, (note: adjacent side is never the hypotenuse)

To save time, tan 30 = sqrt(3)/3,

sqrt(3)/3 = x/7

x = 7*sqrt(3)/3 ~ 4.041

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3 years ago

Write an expression for: the product of 4 and a number. Use x as the variable. Who ever gets it correct first gets brainliest.

maksim [4K]

X(4*1) because I’m just doing what I’m told.

7 0

3 years ago

Help please and thanks! I always give brainliest!

Alika [10]

Answer:

X = 18

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Step-by-step explanation:

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2 years ago

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a me

zimovet [89]

Answer:

Option D) $275

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $235

Standard Deviation, σ = $20

We are given that the distribution of amount of money spent by students is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.975

$P( X < x) = P( z < \displaystyle\frac{x - 235}{20})=0.975$

Calculation the value from standard normal z table, we have,

$P( z < 1.960) = 0.975$

$\displaystyle\frac{x - 235}{20} = 1.960\\x =274.2 \approx 275$

Approximately 97.5% of the students spent below $275 on textbook.

7 0

3 years ago

Sara bought a 20 ounces jar of strawberry jam for $4 what is the unit price

snow_tiger [21]

Answer: Unit price = 0.2 per ounce

Step-by-step explanation:

What we were given;

Product price = $4

Quantity of product = 20 ounce

To get the unit price of the strawberry jam,

We simply devide the product price by the quantity of the product

Therefore;

Unit price = 4 / 20

Unit price = 0.2 per ounce

6 0

3 years ago