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shutvik [7]
3 years ago
14

gale's grade in science for the term is determined by the average of five test grades. his first four grades are 80, 95, 78, and

90. in order to get a b for the term, gale needs to have an average of 84. what grade must gale get on the next test to get a b for the term? write an inequality and solve.
Mathematics
1 answer:
lara [203]3 years ago
5 0

Answer:

He needs at least 77 on the 5th test.

<em>T₅ ≥ 77</em>

Step-by-step explanation:

If five numbers are to average 84, then their sum must be (5 x 84) = 420 .

Gale needs his five grades to add up to 420.

So far, he has (80 + 95 + 78 + 90) =  343 .

He needs at least (420 - 343) = <em>77 more</em> points on the 5th test.

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Answer:

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Step-by-step explanation:

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3 years ago
Which of these transformations appear to be a rigid motion? <br> Please help me!!!!!
Alenkasestr [34]

The answer is the third answer choice, I and II only.


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Hope this helps!

7 0
3 years ago
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Gordon types 1,800 words in 25 minutes how many words per hour?
ANEK [815]
45000 is the answer because 1800 x 25 = 45000

8 0
3 years ago
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(x + 7)^2 – 11 = 0<br> lesser =<br> greater =
Andreyy89

Answer:

Lesser = -\sqrt{11} - 7 = -10.317

Greater = +\sqrt{11} - 7 = -3.683

Step-by-step explanation:

I am assuming you are asking for the lesser x solution and greater x solution.

(x + 7)^2 – 11 = 0

(x + 7)^2 = 11

x+7 = ±\sqrt{11}

x = ±\sqrt{11} - 7

Lesser = -\sqrt{11} - 7 = -10.317

Greater = +\sqrt{11} - 7 = -3.683

4 0
3 years ago
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Harman [31]

Answer:

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Step-by-step explanation:

If the length is x then the width is x - 2  m.

So the perimeter is 2x + 2(x - 2) = 4x - 4 m.

4x - 4 > 112

4x > 116

x > 29 m.

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