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2 years ago

11

Pedro's parents agreed to let him get a dog as long as he pays

1 answer:

Cloud [144]2 years ago

6 0

Answer:

he needs to work at least 5 days

Step-by-step explanation:

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Find z1z2 if z1 = 2/5(cos63° + isin63°) and z2 = 10/3(cos117° + isin117°).

Airida [17]

Answer:

-10/3 is the answer

Step-by-step explanation:

Given are two complex numbers as

$z1=\frac{2}{5} (cos63 + isin63)\\z2=\frac{10}{3} (cos 117 + isin117})$

Recall Demoivre theorem as

(cosA+isinA)(cos A+isin B) = cos(A+B)+isin(A+B)

Hence here we have sum of angles as

A+B = 63+117 =180

$z1z2=\frac{2}{5} \frac{10}{3} (cos180+isin180)$

= $\frac{-10}{3}$

Since sin180=0 and cos 180=-1

7 0

3 years ago

What is 6 1/4 divided by 2

andriy [413]

Answer:

3 1/8

Step-by-step explanation:

6 1/4 ÷ 2

~Turn each number into an improper fraction

25/4 ÷ 2/1

~Copy Dot Flip

25/4 * 1/2

~Multiply

25/8 or 3 1/8

Best of Luck!

3 0

2 years ago

Read 2 more answers

1/4x + 6 + 1/5x - 3/20x = 4.2

natta225 [31]

Answer:

6

Step-by-step explanation:

The explaination is in the picture

6 0

3 years ago

To prove that ΔAED ˜ ΔACB by SAS, Jose shows that StartFraction A E Over A C EndFraction = StartFraction A D Over A B EndFractio

Ira Lisetskai [31]

Answer:

A on Edg.

Step-by-step explanation:

Took the Test

5 0

3 years ago

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. 25% of 900 = 225, 25% is called____ *

posledela

Answer:

25% is called a quarter of 900

Step-by-step explanation:

${ \tt{25\% = \frac{25}{100} = \frac{1}{4} }} \\$

4 0

2 years ago

Read 2 more answers