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TiliK225 [7]
2 years ago
8

1) Eight times the difference between a number and seven, is the same as when five times

Mathematics
1 answer:
Maurinko [17]2 years ago
5 0

Tip: Go step-by-step

Let the number = x

Eight times the difference between a number and seven.. = 8(x-7)

is the same as... =

the number increased by 4.. x+4

8(x-7)=x+4

Distribute

8x-56=x+4

Subtract x from both sides

7x-56=4

Add 56 to both sides

7x=60

x=60/7

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Simplify the expression.<br><br> (−0.75x + 8) + (1.5x + 4.4)<br><br> The simplified expression is
Len [333]

Simplify

-0.75x + 8 + 1.5x + 4.4

Collect like terms

(-0.75x + 1.5x) + (8 + 4.4)

Simplify

<u>0.75x + 12.4 </u>

4 0
3 years ago
Is (1, 6) a solution to this system of equations?<br> 5x + 2y = 17<br> x + 3y = 19<br> yes<br> no
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Answer:
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(I put a question mark to basically ask the question “is 5(1) + 2(6) equal to 17?”)

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Hope this helped and made sense :)
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3 years ago
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Step-by-step explanation:

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3 years ago
The ordered pairs model an exponential growth function. (−1,21.875), (0,35), (1,56), (2,89.6) What is the function equation? f(x
Karolina [17]

Answer:

Given the ordered pairs, the exponential growth function would be represented by f(x)=35(1.6)^x.

Step-by-step explanation:

Exponential growth functions are represented by the following equation: f(x)=ab^x, where 'a'=initial value; 'b'=rate of growth; 'x'=independent value or time.  Given the points, we see that the values of 'x' increase by 1 each time and dividing two 'y' values (35/21.875; 56/35; 89.6/56) gives us a change of 1.6.  Rate is the change in y/the change in x, or 1.5/1, which is the value of 'b'. When 'x' is equal to 0, the value of 'y' is 35, so this represents the initial value, or 'a'.  Plugging in these values will give us the final equation f(x)=35(1.6)^x.

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3 years ago
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alexandr402 [8]
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0.875 is equivalent to 7/8

Leave a thanks if this helped
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3 years ago
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