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bazaltina [42]
3 years ago
8

(7+x)+7x=? equivalent expressions simplifying each expression

Mathematics
2 answers:
kolezko [41]3 years ago
8 0
It will be 8x+7
Hope this helps

Firlakuza [10]3 years ago
3 0
(7 + x) + 7x = ?

First, remove the parenthesis.

7 + x + 7x = ?

Add like terms.
Note: x = 1x

7 + 1x + 7x = 7 + 8x

Your answer is 7 + 8x, or 8x + 7.
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A rectangular metal plate is measured to be 7.6cm long and 3.1cm wide, both correct to one decimal place.
ElenaW [278]

Answer:

We know that the rectangular plate has measures of:

length = 7.6 ± 0.05 cm

width = 3.1 ± 0.05 cm

(the error is 0.05cm because we know that both measures are correct to one decimal place)

First, the upper bound of the length is equal to the measure of the length plus the error, this is:

L = 7.6 cm + 0.05 cm = 7.65 cm

The upper bound of the area is the area calculated when we use the upper bound of the length and the upper bound of the widht.

Remember that the area for a rectangle of length L and width W, is:

A = W*L

Then the upper bound of the area is:

A = (7.6cm + 0.05cm)*(3.1cm + 0.05cm) = 10.8 cm^2

5 0
3 years ago
Find the solution set of each inequality below and then determine which inequalities have the same solution set as 1/3(-5x-3) &l
mario62 [17]

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3 years ago
What is the value of x? 6x - 2x = 16
agasfer [191]

6x - 2x = 16

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Step-by-step explanation:

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