3 years ago

How many students in all scored 100 or 95?

Mathematics

1 answer:

erastovalidia [21]3 years ago

4 0

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Find f(-2) for f(x) = 3 *2^x

Xelga [282]

Answer:

3/4

Step-by-step explanation:

f(x) = 3 *2^x

Let x= -2

f(-2) = 3 *2^(-2)

= 3 * 1/2^2

= 3 /4

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3 years ago

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On Tuesday, Joe lost $10. On Wednesday, he made $5. On Thursday, he made $4.

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Yes he lost 1 dollar

Step-by-step explanation:

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PLEASE HELP ASAP!!!! A computer randomly selects a number from the given set. {1, 2, 5, 10, 25, 30, 36} What is the probability

valina [46]

There are 4 even numbers in your sample space - 2,10,30, and 36 out of 7 total numbers.
P(even) = 4/7.

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3 years ago

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You work at the library for 25 hours each month for $7 per hour. You also earn $40 each month for completing yard work. Use the

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4 years ago

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Nat opened an account that earns 1.4% simple annual interest. He will earn $21 total interest after 3 years. How much did he dep

nataly862011 [7]

Answer:

Therefore Nat deposited $500 when he opened the account.

Step-by-step explanation:

Given that Nat opened an account that earns 1.4% simple annual interest. He will earn $21 total interest after t years.

The simple interest formula is

$I= Prt$

I= interest= $21

P= Principal=?

t= time in year= 3 years.

r = rate of interest= 1.4%= 0.014

$I= Prt$

$\Rightarrow P=\frac{I}{rt}$

$=\frac{21}{0.014\times 3}$

=$500

Therefore Nat deposited $500 when he opened the account.

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3 years ago