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sergey [27]
2 years ago
13

Question 8 of 10 What is sin 30º? 60 2 901 D A B. c.. () E. E )​

Mathematics
1 answer:
levacccp [35]2 years ago
3 0

Answer:

A.  \displaystyle \frac{1}{2}

General Formulas and Concepts:

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA  
  • [Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Define</u>

sin 30°

<u>Step 2: Solve</u>

Since sin is opposite over hypotenuse, we need to find the length of the opposite leg of the angle and the length of the hypotenuse.

Given the triangle and it's values, the opposite leg to the 30° angle is 1 and the hypotenuse is 2.

Substituting it into sin, we have:

sin 30° = 1/2 = 0.5

∴ our answer is A.

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A student has a savings account earning 3% simple interest. She must pay $1900 for first-semester tuition by September 1 and $19
Anastaziya [24]

Answer:

$3781.19

Step-by-step explanation:

Let us assume that the student has to earn $(1900 + x) by September 1 so that he can pay the $1900 tuition fee by September 1 and the remaining $x will grow at 3% simple interest to make him able to pay another tuition fee of $1900 by January 1.

So, we can write x( 1 + \frac{4 \times 3}{12 \times 100}) = 1900

{Because September 1 to January 1 is 4 months and the monthly simple interest rate is \frac{3}{12}%}

⇒ 1.01x = 1900

⇒ x = $1881.19 (Rounded to the nearest cents)

Therefore, the student has to earn $(1900 + 1881.19) = $3781.19 (Answer)

8 0
3 years ago
Find the zeros of the function. Write the smaller solution first, and the larger solution second. f(x)=(x+8)^2−1
BartSMP [9]

Answer:

zeroes: x = -9 and x = -7

Step-by-step explanation:

f(x)=(x+8)^2−1

A "zero" refers to when the y-value on the graph is zero.

0 = (x+8)^2 - 1

1 = (x+8)^2

+ or - 1 = x+8

so break them apart into two equations

x+8 = 1  OR  x+8 = -1

x = -7  OR  x = -9

You can plug both back in to check that the equation works!

4 0
3 years ago
*********************
Mashcka [7]

Answer:

I am confused what is the question?

6 0
2 years ago
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What is the length of leg s of the triangle below?
Katyanochek1 [597]
8, as it is a 45-45-90 triangle, and if it has a side x not on the hypotenuse, the hypotenuse is x√2, and the other side is also x
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3 years ago
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A square with an area of 196 ft2 is reduced by a factor of 1/4. How long the new sides of the square?
soldier1979 [14.2K]

Answer:

49

Step-by-step explanation:

<h2><u>Lesson : Reducing by factors:</u></h2><h2><u /></h2>

Given :

196ft^2

Reduced * factor * of * \frac{1}{4}

When you have to reduce a number by a certain factor, you must divide the area with the amount that it is reducing from, therefore,

\frac{196}{4}

49

5 0
3 years ago
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