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prohojiy [21]
3 years ago
15

PLEASE HELP!!! I️ HAVE TONS OF HW DUE!!! If 8 is added to twice a number and there some is multiplied by five the result is the

same as if the number is multiplied by -8 and four is added to the product. What is the number
Mathematics
1 answer:
zlopas [31]3 years ago
5 0

5(2x +8) = -8x + 4

Use distributive property:

10x +40 = -8x + 4

Subtract 40 from each side:

10x = -8x -36

Add 8x to each side:

18x = -36

Divide both sides by 18:

x = -36 / 18

x = -2


The number is -2



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Anit [1.1K]

Answer:

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Step-by-step explanation:

This expression cannot be distributed any further.

The distributive property is used when multiplying polynomials (multiplying one or more terms by two or more terms). In which case, each term in multiplied by each of the terms in the bracket, for example: .

5(x + 2)  =  5x + 10

We can factor this expression however to go the opposite direction:

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Since 30 and 6 are both divisible by 6, we can factor it out of each term.

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3 years ago
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maksim [4K]

Answer:

The domain of f is {x : x ∈ R, -7 ≤ x ≤ 7} ⇒ [-7, 7]

Step-by-step explanation:

<em>The domain of a function is </em><em>all the values of x</em><em> make the function defined</em>

In the given graph

∵ The graph drawn from x = -7 to x = 7 and from y = -6 to y = 4

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∵ The coordinates of the ending point of the graph of f are (7, 3)

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3 years ago
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anastassius [24]
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8 0
3 years ago
A rectangle has an area of 19.38 cm2. When both the length and width of the rectangle are increased by 1.50 cm, the area of the
Lostsunrise [7]

Answer: 5.7\ cm

Step-by-step explanation:

Given

Rectangle has an area of 19.38\ cm^2

Suppose rectangle length and width are l and w

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We can write

\Rightarrow lw=19.38\quad \ldots(i)\\\\\Rightarrow (l+1.5)(w+1.5)=35.28\\\Rightarrow lw+1.5(l+w)+1.5^2=35.28\\\text{use (i) for}\ lw\\\Rightarrow 19.38+1.5(l+w)=35.28-2.25\\\Rightarrow l+w=9.1\quad \ldots(ii)

Substitute the value of width from (ii) in equation (i)

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Width corresponding to these lengths

w=5.7,\ 3.4

Therfore, we can write the length of the longer side is 5.7\ cm

8 0
3 years ago
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