Find the exact value of sin(20) using the double-angle formula given: sin(0) = -4/5 , π<0<3π/2

Mathematics

1 answer:

viktelen [127]2 years ago

5 0

Answer:

I think its A

Step-by-step explanation:

Sin(20) = 0.91294525072 which in a fraction it would be 24/25

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Simplify. Remove all perfect squares from inside the square ✓75yz

JulijaS [17]

Answer:

From this term $\sqrt{75yz}$ , we cannot remove variable as they are not in square form .

Thus we look at number 75

75 = 25 × 3

25 is a perfect square , so it can come out and this we get 5 when its removed

Thus the answer is $5\sqrt{3yz}$

I hope it helps you

#Indian : )

7 0

2 years ago

|-5| – 45 ÷ 3 Explain how to solve

Alinara [238K]

Order of operations.
Parentheses: there are none
Exponents: also none
Multiplication: also none
Division: yep. 45 / 3 = 15
Addition: none
Subtraction: Yes

The absolute value of -5 is 5. (Absolute values are always positive or 0)
5-15= -10

8 0

3 years ago

16 factory workers made 40 pieces in a certain amount of time.

qwelly [4]

a) The quantities vary directly

b) The constant of variation is 2.5

Step-by-step explanation:

Lets us revise the direct and inverse variation

If y varies x directly, then y = kx, that means the ratio between them is constant ( $\frac{y}{x}=k$ ) , they increased together and decreased together, k is the constant of variation
If y varies x inversely, then yx = k, that means when x increased y must be decrease ( $y=\frac{k}{x}$ ) k is the constant of variation