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Dafna11 [192]
3 years ago
11

Write the statement below as a math expression

Mathematics
1 answer:
lukranit [14]3 years ago
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)!}

n = 12

k = 3

Now that we have our variables, let's plug them into the formula.

_{12}P_{3}=\dfrac{12!}{(12-3)!}

_{12}P_{3}=\dfrac{12!}{9!}

_{12}P_{3}=1320

So there are 1320 different ways that the contestants will be awarded.

5 0
3 years ago
What is the number of possible permutations of 6 objects taken 3 at a time?
Hunter-Best [27]

Answer:

120

Step-by-step explanation:

6 0
3 years ago
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