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Triss [41]
3 years ago
14

Help I need help please!

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
8 0

Answer:

Step-by-step explanation:

one of them is gonna be alot lighter than the rest so i guess use intuition to find it and then measure its weight. ion have a clue what i just said :(

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<span>1965 $50,400? not 100% sure! 

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What does "how many times greater" mean in math?
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Step-by-step explanation:

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2 years ago
Michelle and her roommate rent an apartment for $798 a month. Each of them pays half. Because there are about 4 weeks in a month
matrenka [14]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
If Kevin wants a 90 average in math after 5 tests and his first 4 tests are 76, 92, 89 and 97 what does he need on the fifth tes
Keith_Richards [23]
You need to understand that you're solving for the average, which you already know: 90. Since you know the values of the first three exams, and you know what your final value needs to be, just set up the problem like you would any time you're averaging something.
Solving for the average is simple:
Add up all of the exam scores and divide that number by the number of exams you took.
(87 + 88 + 92) / 3 = your average if you didn't count that fourth exam.
Since you know you have that fourth exam, just substitute it into the total value as an unknown, X:
(87 + 88 + 92 + X) / 4 = 90
Now you need to solve for X, the unknown:
87
+
88
+
92
+
X
4
(4) = 90 (4)
Multiplying for four on each side cancels out the fraction.
So now you have:
87 + 88 + 92 + X = 360
This can be simplified as:
267 + X = 360
Negating the 267 on each side will isolate the X value, and give you your final answer:
X = 93
Now that you have an answer, ask yourself, "does it make sense?"
I say that it does, because there were two tests that were below average, and one that was just slightly above average. So, it makes sense that you'd want to have a higher-ish test score on the fourth exam.
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3 years ago
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PLS HELP ILL MARK BRAINLYEST
Vitek1552 [10]

Answer:

Step-by-step explanation:

1 - a

2 - c

3 - b

5 0
2 years ago
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