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3 years ago

Which equation has infinitely many solutions?

Mathematics

1 answer:

Gennadij [26K]3 years ago

7 0

The answer to your queation is C

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Find the product of z1 and z2, where z1 = 2(cos 70° + i sin 70°) and z2 = 4(cos 200° + i sin 200°)

vazorg [7]

Answer:

-8i

Step-by-step explanation:

To multiply numbers is polar form

z1 = r1 ( cos theta 1 + i sin theta 1)

z2 = r2 ( cos theta 2 + i sin theta 2)

z1*z2 = r1*r2 (cos (theta1+theta2) + i sin (theta1+theta2)

z1 = 2(cos 70° + i sin 70°)

z2 = 4(cos 200+ i sin 200)

z1z2 = 2*4 (cos (70+200) + i sin (70+200)

z1z2 = 8 (cos(270) + i sin (270))

= 8 (0 + i (-1))

=-8i

5 0

4 years ago

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Sara Blake's grandmother gave her $3000.00 to save for college. She put it in a savings account that earns 6% interest per year.

zubka84 [21]

I assume you are looking for the total. The total amount in the account will be $4,781.54 if the interest is compounded annually.

If she is earning 6% interest, the balance in her account will be multiplied by 1.06 each year.

You can evaluate the following expression to find the total.
$3000(1.06)^8 = 4781.54$

6 0

4 years ago

Farah made 28 out of 84 shots on a goal in a recent hockey season. Write her shots made out of shots attempted as a decimal

Fudgin [204]

Answer:

0.4375

Step-by-step explanation:

Number of shots attempted by Farah = 84

Number of shots made by Farah = 28

So,

Shots made out of shots attempted will be Equal to

$\frac{28}{64}$

= 0.4375

Thus,

Number of shots made out of number of shots attempted for farah in hockey match equals to 0.4375 .

6 0

4 years ago

Find the slope from the graph and from the table to compare the speeds of two marathon runners.

seraphim [82]

B

una unidad de sentido, y es por medio de ellas que los hablantes logran expresar una proposición lógica

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3 years ago

Why is it important to know how to interpret a remainder?

tino4ka555 [31]

I'm thinking if you are dividing an odd number you might have a remainder it's important because you need to use the remainder, you can ignore it or add it to the number, interpreting numbers means you are trying to find out what you do with the remainder but I'm not always right.

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3 years ago

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