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Natali5045456 [20]
2 years ago
6

The value of x in x + 7 = 15 is_____​

Mathematics
2 answers:
katrin [286]2 years ago
7 0

Answer:

8

Step-by-step explanation:

x+7=15

or, x=15-7

therefore,x=8

madreJ [45]2 years ago
6 0

Answer:

x=8

Step-by-step explanation:

x+7=15

 -7  -7

x=8

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Oliver works at a bookstore.He packed 20 identical paperbacks and 9 identical textbooks in a box. The total mass of the books wa
max2010maxim [7]
In the problem, the first equation should be represented like this base on the variable given in the problem:

20p + 9t = 44.4

with that equation, the second equation would is given by this formula, in response with the additional number of paperback and textbook

21p + 14t = 51

to get the system equation in getting the mass of each variable, you should subtract the two equation to simplified the formula.

   20p + 9t = 44.4
 - 21p + 14t = 51
-------------------------
p + 5t = 6.6 // this is the system equation that could be use in getting the mass of each object
8 0
3 years ago
What is the solution to the linear equation? 2/3x-1/2=1/3+5/6x
creativ13 [48]
2/3x - 1/2 = 1/3 + 5/6x....multiply the entire equation by the common denominator of 6...this will get rid of the fractions.

6(2/3x - 1/2) = 6(1/3 + 5/6x) =
4x - 3 = 2 + 5x...subtract 5x from both sides
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4x - 5x = 2 + 3...combine terms
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x = -5
7 0
3 years ago
Read 2 more answers
James had 508 books to put into 9 boxes. how many books were in each box?​
SOVA2 [1]

Answer:

around 56-57

Step-by-step explanation:

8 0
2 years ago
The CPI for 1930 was 16.7, while for 1939 it was 13.9. If an item costs $100 in 1930, how much would it have cost in 1939?
Goshia [24]

Answer:

<h2>$83.2</h2>

Step-by-step explanation:

If the CPI for 1930 was 16.7, while for 1939 it was 13.9, the change in CPI will be 16.7 - 13.9 = 2.8. The amount lost within the year 19.30 to 1939 if the cost of the item in 1930 is $100 will be expressed as;

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= $16.8

The amount the item would have cost in 1939 will be $100 - $16.8 = $83.2

5 0
3 years ago
The diagram shows a row of four identical tiles, each in the shape of an isosceles trapezoid. What is the area of one tile?
VMariaS [17]
I saw the image that accompanied this problem. 

4 identical isosceles trapezoid forming 2 parallelogram.
1 parallelogram has a base of 16 inches and its height is 10 inches.

We need to get the area of the parallelogram and multiply it by 2 before dividing it into 4 to get the area of each isosceles trapezoid. 

Area of a parallelogram = base * height
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160 in² x 2 parallelogram = 320 in²
320 in² / 4 tiles = 80 in²

The area of one tile is 80 square inches.

8 0
3 years ago
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