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Naddika [18.5K]
3 years ago
9

Which equation represents a line which is parallel to the line 8x + 7y = -28?

Mathematics
1 answer:
Paul [167]3 years ago
5 0

Answer:

-8/7 slope

Step-by-step explanation:

so first u need to figure out the y=mx+b of ur equation 8x+7y=-28 to make it easier on urself yk. so first you get the y by it self and change it to become 7y= -8x-28 you do this by dragging the 8x to the other side which makes it negative since ur switching sides. now u divide each number by 7 since the 7y is by itself. doing this u get y= -8/7x-4. basically parallel = same slope so you will keep ur same slope or m as -8/7  and now all u need to find is b but in ur question u didnt give coordinates so irdk but ur answer has to have the -8/7 slope

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A right rectangular prism is shown. The two dimensional net is also shown. Find the surface area of this prism.
Natasha_Volkova [10]

Hey!

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Surface Area Formula: 2LW * 2LH * 2WH

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2LW:

5 x 1 = 5

5 x 2 = 10

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2LH:

4 x 1 = 4

4 x 2 = 8

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2WH:

5 x 4 = 20

20 x 2 = 40

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Surface Area:

40 + 8 + 10= 58

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Answer:

D) 58 cm2

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Hope This Helped! Good Luck!

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3 years ago
Find the area of the following<br> rhombus:<br> 6 cm<br> 10 cm<br> 8 cm
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Answer:

480

Step-by-step explanation:

10*6=60

60*8=480

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Which of the following comparisons is true?
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What's the best approximation for the area of a semi circle with a diameter of 11.8 feet?
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What is the equation of the line that passes through the point (8, -4) and<br> has a slope of 1/2
Eva8 [605]

Answer:

y = \frac{1}{2}x - 8

Step-by-step explanation:

1. Approach,

For this problem, the format of a line that will be used is, slope-intercept form;

y = mx + b

Where (m) is the slope of the line, also known as the change in the line and (b) is the y-intercept, or where the graph of the line intersects the y-axis. Since, in this problem, the slope of the line is given, all one has to do is substitute in a point on the given line and solve.

2. Finding the equation,

In this problem, the slope of the line is given. Therefore, to solve this problem, all one has to do is substitute in a point on the given line and solve.

y = mx + b

Substitute in the slope,

y = \frac{1}{2}x + b

Substitute in the point,

-4 = \frac{1}{2}(8) + b

Simplify,

-4 = 4 + b

Inverse operations,

-4 = 4 + b\\-4\\\\-8 = b

3. Putting it all together,

Now, that one has y-intercept, (-8); use the given slope and the formula y = mx + b,  substitute in all the information.

y = \frac{1}{2}x - 8

7 0
3 years ago
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