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zhannawk [14.2K]
4 years ago
7

What is the exact value of sin 15°?

Mathematics
1 answer:
Fynjy0 [20]4 years ago
3 0

Answer:

Step-by-step explanation:

The result can be shown in multiple forms.

Exact Form:

√

6

−

√

2

4

Decimal Form:

0.25881904

…

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Please help me smart people!!!!! It would be realllllyyyyy helpful right now!!!!!!
Bumek [7]
9. 2/6 and in simplified form it’s 1/3
10. 10/4 simplified is 5/2
11. 8/2 simplified is 4/1
12. 7/7 which is 1
13. Has no slope
14. 4/7
8 0
4 years ago
7.9% - 0.25 = 3.2 + x​
seraphim [82]

Answer:

x = 3.391

Step-by-step explanation:

first you calculate.

7.9% - 0.25 = 3.22 + x

divide the numbers

\frac{7.9}{100} - 0.25 = 3.22 + x

calculate again.

0.079 - 0.25 = 3.22 + x

move the terms

<u>-0.171</u> = <u>3.22 + x</u>

add the numbers

<u>-x = 3.22 + 0.171</u>

then change the signs

<u>-x = 3.391</u>

Final ans : <u>x = -3.391</u>

or some alternate answer's

x = -\frac{3391}{1000} , x = -3\frac{391}{1000}

3 0
3 years ago
Read 2 more answers
Choose the expression that best represents the phrase below.
Arada [10]

20 more than the price of the meal is 20+p. Option-B is correct.

Given that,

The expression we have to get from 20 more than the price of the meal is.

Mathematical statements are called expressions if they have at least two terms that are related by an operator and contain either numbers, variables, or both. There are four types of mathematical operations: addition, subtraction, multiplication, and division.

Take the price of the meal as p.

20 more than the price of the meal is 20+p.

Therefore, 20 more than the price of the meal is 20+p. Option-B is correct.

To learn more about price visit: brainly.com/question/13731474

#SPJ1

7 0
1 year ago
Plz help me get the right answer to these
Citrus2011 [14]

- b^{4} + 6b^{3}

divide each term on the numerator by 7b

= - 7b^{5} / 7b + 42b^{4} / 7b

= - b^{4} + 6b^{3}


4 0
3 years ago
Read 2 more answers
If f(x) =4x2 - 8x - 20 and g(x) = 2x + a, find the value of a so that the y-intercept of the graph of the composite function (fo
amm1812

Answer:

The possible values are a = -2.5 or a = 4.5.

Step-by-step explanation:

Composite function:

The composite function of f(x) and g(x) is given by:

(f \circ g)(x) = f(g(x))

In this case:

f(x) = 4x^2 - 8x - 20

g(x) = 2x + a

So

(f \circ g)(x) = f(g(x)) = f(2x + a) = 4(2x + a)^2 - 8(2x + a) - 20 = 4(4x^2 + 4ax + a^2) - 16x - 8a - 20 = 16x^2 + 16ax + 4a^2 - 16x - 8a - 20 = 16x^2 +(16a-16)x + 4a^2 - 8a - 20

Value of a so that the y-intercept of the graph of the composite function (fog)(x) is (0, 25).

This means that when x = 0, f(g(x)) = 25. So

4a^2 - 8a - 20 = 25

4a^2 - 8a - 45 = 0

Solving a quadratic equation, by Bhaskara:

\Delta = (-8)^2 - 4(4)(-45) = 784

x_{1} = \frac{-(-8) + \sqrt{784}}{2*(4)} = \frac{36}{8} = 4.5

x_{2} = \frac{-(-8) - \sqrt{784}}{2*(4)} = -\frac{20}{8} = -2.5

The possible values are a = -2.5 or a = 4.5.

5 0
3 years ago
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