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Aleksandr [31]
3 years ago
14

8 + 3a + 7 - 2a simplifies to

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
4 0
I’m pretty sure its 15+1a

8+7=15
3a-2a=1a
Anna [14]3 years ago
3 0

8+3a-2a+7=0

8+a+7=0

a+15=0

a= (-15)

Hope it helped

<h2>Thank You </h2>
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Which techniques can be used to evaluate the expression 12.75/<br><br> 1.5
sergeinik [125]

Answer:

8.5

Step-by-step explanation:

Given the expression 12.75/1.5. The technique in solving the division expression is as shown

First we can write the decimals as fraction as shown;

12.75 = 1275/100

1.5 = 15/10

12.75/1.5 = (1275/100)÷(15/10)

12.75/1.5 = 1275/100×10/15

12.75/1.5 = 1275/10 × 1/15

12.75/1.5 = 1275/150

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Hence the result of the division is 8.5

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Read 2 more answers
What is the equation of a line perpendicular to y=1/4x+2 that passes through the point (0,1)
ipn [44]

Answer: y = -4x + 1 or y = 1 - 4x

Step-by-step explanation:

First, we have to find the slope of the perpendicular. The slope of the line perpendicular to the other is the <u>reciprocal and opposite value</u> of the other line's slope.

This means that the slope perpendicular to y = 1/4x + 2 is -4, or -4/1.

Now we need to find the y-intercept, to do that we will use the equation y = mx + b. m = slope, b = y-intercept.

Plug in the values.

1 = -4(0) + b

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1 = 0 + b

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Our y-intercept is 1.

Now we can form the slope-intercept equation for the line perpendicular to y = 1/4x + 2 that passes through the point (0, 1).

y = -4x + 1

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