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2 years ago

Solve this problem √-16

Mathematics

1 answer:

a_sh-v [17]2 years ago

3 0

Answer:

$4i$

Step-by-step explanation:

$\sqrt{-1} = i$

Therefore $\sqrt{-16} = \sqrt{16} \sqrt{-1} \\=4i$

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What is the area of the sector shown

EastWind [94]

Answer:

$D.~ 34.2~cm^2$

Step-by-step explanation:

An arc measure of 20 degrees corresponds to a central angle of 20 degrees.

Area of sector of circle

$area = \dfrac{n}{360^\circ}\pi r^2$

where n = central angle of circle, and r = radius

$area = \dfrac{20^\circ}{360^\circ}\pi (14~cm)^2$

$area = \dfrac{1}{18}(3.14159)(196~cm^2)$

$area = 34.2~cm^2$

5 0

3 years ago

Pls answer correctly dont troll!!

Rufina [12.5K]

Answer:

Yes

Step-by-step explanation:

To form a triangle : The sum of any two side lengths must be bigger than then the third side length and their difference smaller than the third side length.

19.6 + 1.6 > 18.7

19.6 - 1.6 < 18.7 and so on.

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2 years ago

English 3 hhhhhhhhhheeeeeeelllllllllllllllllppppppppppp me

sasho [114]

Answer:

the answer is: A

because deduce means to arrive at a fact or conclusion by reasoning.

also because the correct word you would use In option A is reduce.

7 0

2 years ago

To solve the equation 5sin(2x)=3cosx, you should rewrite it as___.

galina1969 [7]

Answer:

Step-by-step explanation:

We want to solve the equation:

$5\sin(2x)=3\cos(x)$

To do so, we can rewrite the equation.

Recall the double-angle for sine:

$\sin(2x)=2\sin(x)\cos(x)$

By substitution:

$5\left(2\sin(x)\cos(x)\right)=3\cos(x)$

Distribute:

$10\sin(x)\cos(x)=3\cos(x)$

We can subtract 3cos(x) from both sides:

$10\sin(x)\cos(x)-3\cos(x)=0$

And factor:

$\cos(x)\left(10\sin(x)-3\right)=0$

Hence, our answer is A.

*It is important to note that we should not divide both sides by cos(x) to acquire 10sin(x) = 3. This is because we need to find the values of x, and one or more may result in cos(x) = 0, and we cannot divide by 0. Hence, we should subtract and then factor.

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2 years ago

Read 2 more answers

Can you regroup 43 and 28

avanturin [10]

Answer:

Step-by-step explanation:

7 0

2 years ago