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VARVARA [1.3K]
3 years ago
12

I have to show my work. Can anybody help me thank you.

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0

Hi, I'm sorry but I don't know what the box method is but the answer for question 15 is 14472 and the answer for question 16 is 17510.

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a jar contains some marbles that are either white or red. the ratio of the number of white marbles to the number of red numbers
nexus9112 [7]

Answer:

52 marbles i think

Step-by-step explanation:

5 0
3 years ago
An investor invested a total of $2,800 in two mutual funds. One fund earned 5% profit while the other earned 3% profit. If the i
Natasha_Volkova [10]

Answer:

The amount invested in the mutual fund that earned 5% was $1,000

The amount invested in the mutual fund that earned 3% was $1,800

Step-by-step explanation:

Let

x ----> the amount invested in the mutual fund that earned 5%

y ----> the amount invested in the mutual fund that earned 3%

we know that

x+y=2,800 ----> y=2,800-x ----> equation A

5\%=5/100=0.05

3\%=3/100=0.03

0.05x+0.03y=104 ----> equation B

Solve the system by substitution

substitute equation A in equation B

0.05x+0.03(2,800-x)=104

Solve for x

0.05x+84-0.03x=104

0.05x-0.03x=104-84

0.02x=20

x=\$1,000

<em>Find the value of y</em>

y=2,800-x

y=2,800-1,000=\$1,800

therefore

The amount invested in the mutual fund that earned 5% was $1,000 and the amount invested in the mutual fund that earned 3% was $1,800

5 0
3 years ago
13-12x+7x <br> Ive been trying to find the answer but i cant seem to do it right
frutty [35]
Your answer is 8x hope that helps
5 0
3 years ago
Evaluate the expression when x=7 and y=-3. 5y2-x
DIA [1.3K]

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-37

Step-by-step explanation:

It would be greatly appreciated if you gave me brainlest

7 0
2 years ago
Read 2 more answers
How much simple interest does $4,678.00 earn in 529 days at a rate of 7.3%? Round to the nearest cent.
statuscvo [17]

Answer:

$5,172.93

Step-by-step explanation:

We're gonna use the simple interest formula: P = A(1 + r(t))

P = final amount

A = starting amount (4,678)

r = rate (0.073)

t = years (529/365)

P = 4,678(1 + 0.073(529/365))

P = 5,172.9324

7 0
2 years ago
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