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3 years ago

Write the statement below as a math expression

1 answer:

3 0

D. 2(n-8)

The difference of a number and eight is separate from being multiplied by 2 which is why you would use parenthesis.

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Amal worked a total of 30 hours last week. On Saturday and Sunday he worked 5 times as many hours than he worked the rest of the

ehidna [41]

Since 30 times 5= 150, he worked 150 hours for the rest of the week.

6 0

3 years ago

William wants to invest $30,000 in a mutual fund.

Natali [406]

Answer:

He will have $39,750 at the end of five years.

Step-by-step explanation:

This is a simple interest problem.

The simple interest formula is given by:

$E = P*I*t$

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

After t years, the total amount of money is:

$T = E + P$

In this question:

$P = 30000, I = 0.065, t = 5$

Interest earned:

$E = P*I*t = 30000*0.065*5 = 9750$

Total amount:

$T = E + P = 9750 + 30000 = 39750$

He will have $39,750 at the end of five years.

8 0

3 years ago

QUICK I NEED MAJOR HELP !! WILL MARK BRAINLIEST

meriva

Answer:

y = 5 ft

Step-by-step explanation:

We are looking for y.

This is a right triangle, so we can use the Pythagorean theorem

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

a = 12 and b = y c = 13

12^2 + y^2 = 13^2

144 + y^2 =169

Subtract 144 from each side

144-144 +y^2 = 169-144

y^2 = 25

Take the square root of each side

sqrt(y^2) = sqrt(25)

y = 5

6 0

3 years ago

There are 12 contestants in a coloring contest. Three ribbons will be awarded. How many different ways could the ribbons be awar

Elanso [62]

Answer:

1320 ways

Step-by-step explanation:

Here we have a situation where 3 ribbons will be awarded to 3 of the 12 contestants. We can use the permutation formula, because the order of awarding the ribbons matters.

The permutation formula is:

$_{n}P_{k}=\dfrac{n!}{(n-k)!}$