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Andrej [43]
3 years ago
7

 10 times the sum of half a number and 6 is 8

Mathematics
1 answer:
Aleksandr [31]3 years ago
4 0
10(0.5x+6)= 8

Divide both sides by 10
0.5x+6=0.8

Subtract 6 from both sides
0.5x= -5.2

Multiply both sides by 2
x= -10.4

Final answer: -10.4
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Solution:

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Breadth of the rectangle = 8 ft

Area of the rectangle = length × breadth

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In this rectangle the diagonal splits the rectangle into two equal halves.

Area of the shaded triangle = Half of area of rectangle

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Area of the shaded triangle = \frac{1}{2} (14\times8)

Hence the equation can be used to calculate the area of the shaded

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Answer:

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Step-by-step explanation:

First, fill in 3 boxes of the table using the given information (blue numbers on the attached table)

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The top row of the table is students who have a cell phone.  Therefore, place 19 in the box in this row that is in the "no tablet" column.

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The first column of the table is students who have a tablet.  Therefore, place 57 in the box in the 2nd row of this column.

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Find the "no cell phone" row and the "no tablet" column and place 11 in the box that coincides.

We can calculate the blank totals using addition (shown by green numbers on the attached table)

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To calculate the number of students who have a cell phone AND a tablet:

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