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zimovet [89]
3 years ago
8

In Jennifer’s anatomy and physiology class, her grade is determined by dropping the lowest score out of 10 tests and averaging t

he remaining 9 test scores. Jennifer has earned the following scores on the first 9 tests: 85%, 89%, 93%, 96%, 90%, 89%, 92%, 91%, and 82%. What does Jennifer need to earn on her 10th test in order to receive at least an 80% in the class? A. 80% B. 85% C. 90% D. Jennifer will receive at least an 80% in the class no matter what she gets on the 10th test.
Mathematics
2 answers:
mylen [45]3 years ago
7 0
The answer is d because you add all of them up and you get 807 then you divide by 9 and you get 89.6 and then you round and get 90
Sedbober [7]3 years ago
5 0
Answer is d she is already averaging over 89%
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Calculate had a net income of 5 million dollars in 2010, while a small competing company, Computate, had a
Julli [10]

9514 1404 393

Answer:

  a) see the attached spreadsheet (table)

  b) Calculate, for a 10-year horizon; Computate for a longer horizon.

  c) Year 13; no

Step-by-step explanation:

a) The attached table shows net income projections for the two companies. Calculate's increases by 0.5 million each year; Computate's increases by 15% each year. The result is rounded to the nearest dollar.

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b) After year 4, Computate's net income is increasing by more than 0.5 million per year, so its growth is faster and getting faster yet. However, in the first 10 years, Calculate's net income remains higher than that of Computate. If we presume that some percentage of net income is returned to investors, then Calculate may provide a better return on investment.

The scenario given here is only interested in the first 10 years. However, beyond that time frame (see part C), we find that Computate's income growth far exceeds that of Calculate.

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c) Extending the table through year 13, we see that Computate's net income exceeds Calculate's in that year. It continues to remain higher as long as the model remains valid.

6 0
3 years ago
Can you answer this please 20 and brainlest for correct answer points I forgot how to do it I’m in middle school
leonid [27]

Answer:

6 2/3 or 20/3

Step-by-step explanation:

Brainliest pls?

5 0
2 years ago
Read 2 more answers
2a + 4 &gt; 12<br><br> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
nika2105 [10]

Answer:a>4

Step-by-step explanation:

7 0
3 years ago
Why is the answer A? Plzzz explain.
Contact [7]

Answer:


Step-by-step explanation:

f(x) = x^2 + 4x + 4

f(x + a) = (x + a)^2 + 4(x + a) + 4

f(x + a) = x^2 + 2ax + a^2 + 4x + 4a + 4   Now combine like terms and use the distributive property.

f(x + a) = x^2 + (2a + 4)x + a^2 + 4a + 4

We are told that f(x + a) = x^2 - 6x + 9

So that means that

2a + 4 = - 6      Subtract 4 from both sides.

2a = - 6 - 4

2a = - 10          Divide by 2

a = - 10/2

a = - 5.            

But you are not finished. You have to check the last part.

a^2 + 4x + 4 = 9

(a + 2)^2 = 9

Take the square root of both sides

sqrt(a+ 2)^2 = +/- 3

a+2 = 3

a = 1.

Does this work or is it extraneous? It is extraneous because it will not work for  2(a) + 4 = - 6  

You get 6 = - 6 which is not correct. But you did give the second best answer.

a + 2 = - 3

a = - 3 - 2

a = - 5 which agrees with your previous answer.

===========

This is an extremely hard or tricky or sneaky problem. It takes a lot of conniving to get the right answer and 1 is not a left field answer. It just does not happen to be correct.

8 0
3 years ago
What is 4.2X-1.4Y=2.1-2X
enot [183]

4.2x - 1.4y = 2.1 - 2x

Subtract 4.2x

-1.4y = 2.1 - 6.2x

Divide by -1.4

y = -3/2 + 9/2x

Answer: y = 9/2x - 3/2

7 0
3 years ago
Read 2 more answers
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