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2 years ago

My test scores have been 85,80,95 and 65. What must I earn on my next test to have a mean score of at least 80. Please show work

Mathematics

1 answer:

OverLord2011 [107]2 years ago

3 0

Hope that helps! Let me know if you’d like me to clarify something :)

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FASTTTTTTTTTTTTTTTTTTTTTT 50 POINTS +BRAINLIEST

Harlamova29_29 [7]

Answer:

$\huge\boxed{\sf Option \ 2}$

Step-by-step explanation:

$\sf (\frac{4}{5})^3 \\\\$

This means that 4/5 repeats itself 3 times.

So,

$\sf = \frac{4}{5} * \frac{4}{5} * \frac{4}{5} \\\\= \frac{64}{125} \\\\\rule[225]{225}{2}$

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2 years ago

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Dilbert invests a total of $33 000 in two accounts paying 6% and 10\% interest, respectively. How much was invested in each acco

vladimir1956 [14]

Answer:

In the 6% account, 13,000 was deposited

In the 10% account, 20,000 was deposited

Step-by-step explanation:

Here, we are interested in calculating how much invested in each account

Let the amount invested be $x and $y

Mathematically;

x + y = 33,000 ••••(i)

Now let’s work with interest

6% of x + 10% of y = 2780

6/100 * x + 10/100 * y = 2780

Multiply through by 100

6x + 10y = 278000 •••••••••(ii)

From i, x = 33,000 -y

Put this into ii

6(33,000 -y) + 10y = 278000

198,000-6y + 10y = 278000

4y = 80000

y = 80,000/4 = 20,000

But x = 33,000 -y = 33,000 -20,000 = 13,000

3 0

2 years ago

MAY YOU PLEASE HELP ME

IrinaVladis [17]

Answer: y=20x+10

Step-by-step explanation:mark me brainlest please

5 0

1 year ago

Gabby opened a savings account and deposited $800.00 as principal. The

Yuri [45]

Answer:

Use the formula A = p x e^(rate x year), we have:

A = 800 x 2.71828^[(13/100) x 1] = 991.06 = ~911.1 dollar

Hope this helps!

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2 years ago

Can someone help me pls

Stels [109]

Answer: This answer for this is A

Step-by-step explanation: Hope this help :D

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2 years ago

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