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liq [111]
3 years ago
7

Evaluate the following expression. −8 × (−10) −7× 1/−1

Mathematics
1 answer:
GaryK [48]3 years ago
3 0

Answer:

<h2>87</h2>

Step-by-step explanation:

-8\left(-10\right)-7 \times \frac{1}{-1}=87\\\\\mathrm{Apply\:rule}\:-\left(-a\right)=a\\\\=8\times \:10-7\times \frac{1}{-1}\\\\8\times \:10=80\\\\7\times \frac{1}{-1}=-7\\\\=80-\left(-7\right)\\\\\mathrm{Apply\:rule}\:-\left(-a\right)=a\\\\=80+7\\\\=87

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Pls help <br> I give 20 points if u help
Paraphin [41]

Answer:

Again, pretty sure its (-1,-2)

Step-by-step explanation:

6 0
3 years ago
Greg is covering a wall with equal-sized tiles that cannot be cut
Kitty [74]

Answer:

C. 36 in.

Step-by-step explanation:

The wall is 66 inches high by 72 inches wide.

The tiles are

a) 9 inch square = 3 by 3

b) 16 inch square = 4 by 4

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Factors of 72 = 2 x 2 x 2 x 3 x 3

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4 0
3 years ago
8.01 × 10^-2 round the coefficient to two decimal places
11Alexandr11 [23.1K]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Two lines are represented by the equations -1/2y=6x+10 and y=mx for which value of m will the lines be parallel
hjlf

Answer:

-12

Step-by-step explanation:

So to start we need to know what makes a line parallel. In an equation we know that for lines to be parallel they must have the same slope(m).

Then, we  need to know the slope-intercept form of an equation. The slope intercept form is y=mx+b where m is the slope of the line and b is the y-intercept. In this problem where can see the second equation is already in this form.

Now that we know we need to find the slope, and we know that the second equation is in slope-intercept form we're going to convert the fist equation into the correct form.

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8 0
3 years ago
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Step2247 [10]

Answer:

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2 years ago
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