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Mekhanik [1.2K]
3 years ago
6

Write an expression for the sequence of operations described below. divide 10 by the sum of n and m Do not simplify any part of

the expression.
Mathematics
2 answers:
nata0808 [166]3 years ago
6 0

Answer:

\frac{10}{n+m}

Step-by-step explanation:

We are asked to divide 10 by the sum of n and m.

The sum of n and m would be n added to m: n+m.

Now, we will divide 10 by n+m as shown below:

\frac{10}{n+m}

Therefore, our required expression would be \frac{10}{n+m}.

lina2011 [118]3 years ago
3 0

Answer:

(m+n)/10

Step-by-step explanation:

divide 10 by the sum of n and m

(m+n)/10

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Check attached file for solution.

6 0
3 years ago
An online data base charges $25 an hour during the day and $12.50 an hour at night. If a research company paid $250 for 12 hours
Firdavs [7]

Answer

Find out the  which system of equations could be used to determine the number of hours charged at the day rate (d) and at the night rate (n) .

To proof

As given in the question

Let us assume that the number of hours charged at the day rate = d

Let us assume that the number of hours charged at the night rate = n

An online data base charges $25 an hour during the day and $12.50 an hour at night. If a research company paid $250 for 12 hours of use.

Total working hour in a company including day and night be  12 hours .

than the equation become in the form

d + n = 12

also

An online data base charges $25 an hour during the day

$12.50 an hour at night.

If a research company paid $250 for 12 hours of use.

than the equation becomes

25d + 12.50n = 250

than the two equation are

d + n = 12 , 25d + 12.50n = 250

multiply first by 25 and subtracted  from 25d + 12.50n = 250

25d - 25d + 12.50n - 25n = 250 - 300

12.5 n = 50

n = \frac{50}{12.5}

n = 4hours

put this in the d + n = 12

d + 4 =12

d = 12-4

d = 8 hours

Therefore the number of hours charged at the day rate  is 8 hours  and at the night rate is  4hours .

Hence proved



4 0
3 years ago
A cube has a surface area of 864 square inches.
slamgirl [31]
The answer is (D) or 1728 In³
6 0
3 years ago
Read 2 more answers
If the dimensions of a pentagonal prism are quadrupled, then the surface area of the prism is multiplied by eight.
Lubov Fominskaja [6]

Answer:

false

Step-by-step explanation:

the relationship between lengths/dimensions and areas is that areas are created by multiplying 2 dimensions.

when you quadruple (×4) the dimensions, then the areas are growing with the square of the factor (×4×4 = ×16), because the factor goes twice into the multiplication : one time for every dimension involved.

so, quadrupling the dimensions would multiply the areas by 16.

8 0
3 years ago
Yesterday 5% of the 120 sixth graders at school were late. How many sixth graders were late?
attashe74 [19]

Answer:

6

Step-by-step explanation:

5% of 120 were late

= \frac{5}{100} × 120

= 0.05 × 120

= 6

6 0
3 years ago
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