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3 years ago

Determine whether each question is biased. Explain your answer. please help!!

Mathematics

1 answer:

LenKa [72]3 years ago

3 0

I’m having a hard time understanding your question

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Which expression is equal to to (-10 – 2i) + (3 + i)? 0 -7 ti o – 13 – 07- -7-

solong [7]

Answer:

- 7 - i

Step-by-step explanation:

Given

(- 10 - 2i) + (3 + i) ← remove parenthesis

= - 10 - 2i + 3 + i ← collect like terms

= - 7 - i

3 0

3 years ago

Find the length of side a. 5 3 O A. 16 O B. 34 O c. 2 O D. 4

xxMikexx [17]

Answer:

Step-by-step explanation:

a= $\sqrt{c^{2} -b^{2} }$

$\sqrt{5^{2} -3^{2} } =$ 4

a=4

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3 years ago

PLS HELP ASAP. NO LINKS When z= 9, the value of z2 + 1 is

elena55 [62]

Answer is 82

substitute z for 9

9^2 = 81+ 1= 82

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3 years ago

Was the difference in the overall men's winner in the ages 70-74 group more less than 2 hours

PolarNik [594]

4 I think because you subtract all since it's 60 min

8 0

3 years ago

If a simple harmonic motion is described by x = 3 cos(πt), starting from t = 0 s, what is the first occurrence of a value of t f

poizon [28]

Answer:

The first occurence of t for which x = 0 is t = 0.5.

Step-by-step explanation:

The harmonic motion is described by the following equation.

$x(t) = 3\cos{\pi t}$

What is the first occurrence of a value of t for which x = 0?

This is t when $x(t) = 0$ . So

$x(t) = 3\cos{\pi t}$

$3\cos{\pi t} = 0$

$\cos{\pi t} = \frac{0}{3}$

$\cos{\pi t} = 0$

The inverse of the cosine is the arcosine. So we apply the arcosine function to both sides of the equality.

$\arccos{\cos{\pi t}} = \arccos{0}$

$\pi t = \frac{\pi}{2}$

$t = \frac{\pi}{2 \pi}$

$t = \frac{1}{2}$

$t = 0.5$

The first occurence of t for which x = 0 is t = 0.5.

3 0

3 years ago