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Nina [5.8K]
2 years ago
12

Helpppp and explain this word problem!!!

Mathematics
1 answer:
Mashutka [201]2 years ago
6 0
Answer: 90 points (second option)

500+2x/8=85
500+2x=680
2x=180
x=90
90 on each test.

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If x^3=64, what is the value of x?
pickupchik [31]

Answer:

x=4

Step-by-step explanation:

all you need to do is the 3rd root of 64

which is 4.

6 0
3 years ago
If 9 pairs of jeans cost $121.50 find the cost of 5 pairs
Darya [45]

five pairs of jeans should cost $67.5

3 0
3 years ago
Read 2 more answers
Work out 7/10 + 8/15 is. Give your answer as a mixed number in its simplest form.
san4es73 [151]

Answer:

1\frac{7}{30}

Step-by-step explanation:

\frac{7}{10}+\frac{8}{15}\\ \\ \frac{21}{30}+\frac{16}{30}\\\\\frac{37}{30}\\\\1\frac{7}{30}

6 0
2 years ago
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The mean number of hours of part-time work per week for a sample of 526526 college students is 2828. If the margin of error for
sveta [45]

Answer:

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

Step-by-step explanation:

A confidence interval has the following format.

\mu_{x} \pm M

In which \mu_{x} is the mean of the sample and M is the margin of error.

In this problem, we have that:

\mu_{x} = 28, M = 2.2

\mu_{x} - M = 28 - 2.2 = 25.8

\mu_{x} + M = 28 + 2.2 = 30.2

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

4 0
3 years ago
6) Jesse is buying a home for $450,000 at 7.8% interest and Jesse is putting 30% down? He wishes to buy 3 points what is the cos
krek1111 [17]

Answer:

$9450

Step-by-step explanation:

Given that:

The price of the home = $450000

The interest = 7.8%

Down payment = 30% of price of the home

i.e 0.3 × 450000 = 135000

The principal outstanding balance = 450000 - 135000

= 315000

Finally, the cost of 3 points will be;

= 315000 \times \dfrac{3}{100}

= $9450

3 0
3 years ago
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