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3 years ago

7

If you have 6 green socks, 3 black socks, and 1 purple sock. What is the probability of picking a black sock, putting it back an

d then picking another black sock (because you like black socks).

1 answer:

bezimeni [28]3 years ago

6 0

Answer:

10

Step-by-step explanation:

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n=10

Step-by-step explanation:

5n-20=3n

-20=-2n

10=n

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How do u write 1.02 as a fraction and a percent

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About 4.

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Click on the correct answer.

Galina-37 [17]

Answer:

A, $1.08

Step-by-step explanation:

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3 years ago

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Could someone help me understand how to solve this?

monitta

Answer:

Amount in 4% account: $550

Step-by-step explanation:

Use simple interest formula $I=P\cdot r\cdot t,$ where

I = interest

P = principal

r = rate (as decimal)

t = time.

<u>4% account:</u>

$P_1=x\\ \\r_1=0.04\\ \\t_1=1,$

then

$I_1=x\cdot 0.04\cdot 1=0.04x$

<u>5% account:</u>

$P_2=1,500-x\\ \\r_2=0.05\\ \\t_2=1,$

then

$I_2=(1,500-x)\cdot 0.05\cdot 1=0.05(1,500-x)$

You have earned $69.50 in total, so

$I_1+I_2=69.50\\ \\0.04x+0.05(1,500-x)=69.50\\ \\4x+5(1,500-x)=6,950\\ \\4x+7,500-5x=6,950\\ \\4x-5x=6,950-7,500\\ \\-x=-550\\ \\x=550\\ \\1,500-x=1,500-550=950$

Amount in 4% account: $550

Amount in 5% account: $950

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3 years ago