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3 years ago

12

A student has gotten the following grades on his tests: 87, 95, 76, and 88. He wants an 85 or better overall. What is the minimu

m grade he must get on the last test in order to achieve that average?

1 answer:

Hoochie [10]3 years ago

4 0

Answer:

He must get at least a 90 in order to recieve an 85 percent or higher

Step-by-step explanation:

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Solve for x.<br><br> x=<br><br> Look at image

postnew [5]

Answer:

$x = 14$

Step-by-step explanation:

To find x, the following equation is generated given the available information:

$\frac{(x + 7) + x)}{x + 7} = \frac{12 + 8}{12}$

$\frac{2x + 7}{x + 7} = \frac{20}{12}$

$\frac{2x + 7}{x + 7} = \frac{5}{3}$

Cross multiply

$3(2x + 7) = 5(x + 7)$

$6x + 21 = 5x + 35$

Collect like terms

$6x - 5x = - 21 + 35$

$x = - 21 + 35$

$x = 14$

8 0

2 years ago

Mrs. Saddler and her family go out for dinner. Their bill was $55.25. Mrs. Saddler leaves a 18% tip. What is Mrs. Saddler’s tota

olchik [2.2K]

You multiply 55.25 by 0.18. You get 9.945 and then you add it to 55.25. You should get 65.195. Round it to $65.20. That's your answer.

5 0

2 years ago

If x=1 and y=2, what is the value of the expression 2x^2-3xy

hjlf

2x² - 3xy
2(1)² - 3(1)(2)
2(1) - 3(2)
2 - 6
-4

7 0

2 years ago

Which of these tables is a ratio table? A 2-column table has 3 rows. Column 1 is labeled A with entries 2, 4, 5. Column 2 is lab

makkiz [27]

Answer:

its b

Step-by-step explanation:

7 0

2 years ago

(a) (x+3)(x+2) =<br><br><br> How do I solve this without the use of parentheses

Ierofanga [76]

Answer: x^2+5x+6

Step-by-step explanation:

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2 years ago