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miv72 [106K]
4 years ago
14

Can someone help me with this plz

Mathematics
1 answer:
Temka [501]4 years ago
8 0
The answer is 3 because 3 cubed is 27
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4x+27=10x-33 how to answer it
Nikolay [14]

-6x +27 = -33

-6x = -60

x = 10

4 0
3 years ago
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At the north campus of a performing arts​ school, ​20% of the students are music majors. At the south​ campus, 70​% of the stude
antoniya [11.8K]

Answer:

The north campus had 800 while the south campus had 200.

Step-by-step explanation:

The question stated that there are 1000 students in the merged campus. That's the sum of the number of students in the north and the south campus before the merger.

Let x denote the number of students in the north campus before the merger. The other (1000 -x) students would all belong to the south campus before the merger.

Before the merger, 20\% of the students of the north campus are of music majors. In terms of x, that's (20\%)\cdot x = 0.20\,x students.

On the other hand, 70\% of the students of the south campus are of music majors. That corresponds to (70\%)\cdot (1000 - x) = 0.70\cdot (1000 - x) = 700 - 0.70\, x students.

With a similar logic, the number of music students in the merged east campus will be 30\% \times 1000 = 300.

The question implies that the sum of students in the two campuses should be equal to the number of music students in the east campus. That is:

0.20\, x+ (700 - 0.70\, x) = 300.

Solve for x:

x = 800.

In other words, there are 800 students in the north campus and (1000 - 800) = 200 students in the south campus before the merger.

6 0
4 years ago
How do I find the perimeter of a triangle with sides 3ft 8in., 2ft 10in., and 4 ft?
Dmitriy789 [7]
Formula for triangle perimeter is: a + b + c. In this scenario we have:

a = 3 feet 8 inches
b = 2 feet 10 inches
c = 4 feet

a + b + c =
= 3 ft + 8 in + 2 ft + 10 in + 4 ft =
= 9 ft + 18 in

We know that 1 foot is 12 inches, so we can simplify the result to this form:

10 ft + 6 in

or:

<u>10.5 feet</u>
4 0
3 years ago
George Box, a famous statistician, once said, "All models are wrong, but some are useful.” What did George Box mean by this stat
Katena32 [7]
Basically meaning that no model can exactly be on point with whatever it is modeling. Two things cannot be EXACTLY identical to what they are referring to, but it is saying that some can get close enough to be useful as an example. 

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The beginning balance on the monthly bank statement for Charmaine’s checking account was $603.84, and the ending balance $264.98
goldenfox [79]
<span>She had $338.86 more in credits than in debits </span>
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3 years ago
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