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sleet_krkn [62]
2 years ago
6

Mrs. Barlow's math class took a test yesterday. Out of 80 students, 70% of them passed. How many of Mrs. Barlow's students passe

d the test?
A.
24
B.
56
C.
6
D.
2
Mathematics
1 answer:
likoan [24]2 years ago
8 0

Answer:

B.56

Step-by-step explanation:

80x0.70 is 56

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How to solve this problem
shepuryov [24]
I cant tell if this is french or spanish but please translate so we can try to help you
3 0
3 years ago
You saved $20,000.00 and want to diversify your monies. You invest 45% in a Treasury bond for 3 years at 4.35% APR compounded an
Maru [420]

Compound Interest

A total of $20,000 is invested in different assets.

45% is invested in a Treasury bond for 3 years at 4.35 APR compounded annually.

For this investment, the principal is P = 0.45*$20,000 = $9,000.

The compounding period is yearly, thus the interest rate is:

i = 4.35 / 100 = 0.0435

The duration (in periods) is n = 3

Calculate the final value with the formula:

M=P_{}(1+i)^n

Substituting:

\begin{gathered} M=\$9,000_{}(1+0.0435)^3 \\ M=\$9,000\cdot1.136259062875 \\ M=\$10,226.33 \end{gathered}

The second investment is a CD at 3.75% APR for 3 years compounded annually. The parameters for the calculations are as follows:

P = 15% of $20,000 = $3,000

i = 3.75 / 100 = 0.0375

n = 3

Calculating:

\begin{gathered} M=\$3,000_{}(1+0.0375)^3 \\ M=\$3,000\cdot1.116771484375 \\ M=\$3,350.31 \end{gathered}

The third investment is in a stock plan. The initial value of the investment is

P = 20% of $20,000 = $4,000

By the end of the first year, the stock plan increased by 8%, thus its value is:

M1 = $4000 * 1.2 = $4,800

By the end of the second year, the stock plan decreased by 4$, thus the value is:

M2 = $4,800 * 0.96 = $4,608

Finally, the stock plan increases by 6%, resulting in a final balance of:

M3 = $4,608 * 1.06 = $4,884.48

Finally, the last investment is in a savings account at 2.90% APR compounded annually for 3 years (not mentioned, but assumed).

P = $20,000 - $9,000- $3,000 - $4,000 = $4,000

i = 2.90 / 100 = 0.029

n = 3

Calculating:

\begin{gathered} M=\$4,000_{}(1+0.029)^3 \\ M=\$4,000\cdot1.089547389 \\ M=\$4,358.19 \end{gathered}

To summarize, the final balances for each type of investment at the end of the third year are:

Investment 1; $10,226.33

Investment 2: $3,350.31

Investment 3: $4,884.48

Investment 4: $4,358.19

Total balance: $22,819.32

3 0
1 year ago
Solve this inequality for the set of whole numbers. 17 - 12 > x Type the answer in this form: a < 5 or b > 12. Please h
Dahasolnce [82]

Answer:

A <5

Step-by-step explanation:

You simplify both sides of the inequality, then isolate the variable.

8 0
3 years ago
The quotient of a number and nine is less or equal to fifteen
dimulka [17.4K]

Remark

If you just want the way this would be written out the answer is

\dfrac{x}{9} \leq 15

Note

1. The quotient is the answer of a division problem.

2. The number is represented by the letter x

5 0
3 years ago
X2 – 2x – 17 = 0<br> Factoring
denpristay [2]

Answer:

It around 2 or 2.5

Step-by-step explanation:

Its simple

6 0
3 years ago
Read 2 more answers
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