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IrinaK [193]
2 years ago
14

Someone please help and choose correct answer

Mathematics
1 answer:
tresset_1 [31]2 years ago
7 0

Answer:

The equation of line that passes through point (2,-1) and has a slope of -3 is \mathbf{y=-3x+5}

Option A is correct.

Step-by-step explanation:

We need to write equation of line that passes through point (2,-1) and has a slope of -3

The equation is written in slope-intercept form: y=mx+b where m is slope and b is y-intercept.

We are given slope: m = -3

We need to find y-intercept (b)

Using the point (2,-1) and slope m=-3, we can find y-intercept

y=mx+b\\-1=-3(2)+b\\-1=-6+b\\b=-1+6\\b=5

So, we get y-intercept b = 5

Now, the required equation having slope m =-3 and y-intercept b = 5 will be:

y=mx+b\\y=-3x+5

So, the equation of line that passes through point (2,-1) and has a slope of -3 is \mathbf{y=-3x+5}

Option A is correct.

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Aubrey claims that if the dimensions of the parallelogram shown are doubled, then the area of the larger parallelogram will be 4
Ostrovityanka [42]

Answer:

Aubrey is correct because the area of the new parallelogram is 12 (6) = 72 square inches. The original area is 18 square inches. Since 4 (18) = 72, the new parallelogram has 4 times the area of the original.

Step-by-step explanation:

A parallelogram with a base of 6 inches and height of 3 inches. A side has a length of 5 inches.

Aubrey is correct because the area of the new parallelogram is 12 (6) = 72 square inches. The original area is 18 square inches. Since 4 (18) = 72, the new parallelogram has 4 times the area of the original.

Aubrey is correct because the area of the new parallelogram is 10 (7) = 70 square inches. The original area is 18 square inches. Since 4 (18) = 72, it is about 4 times larger than the original.

Aubrey is incorrect because if one doubles each dimension, then the area will automatically be doubled as well. The original area is 18 square inches so the new parallelogram will have an area of 2 (18) = 36, or two times more than the original.

Aubrey is incorrect because if one doubles each dimension, then the area will automatically be doubled as well. The original area is 30 square inches so the new parallelogram will have an area of 2 (30) = 60, or 2 times more than the original.

Workings

Area of a parallelogram=base×height

Original parallelogram

Base=6 inches

Height=3 inches

Area=base×height

=6×3

=18 square inches

New parallelogram with doubled dimensions

Base=6 inches doubled=12 inches

Height=3 inches doubled=6 inches

Area=base×height

=12×6

=72 square inches

New area=4 times original area

New area=4×18

New area=72 square inches

5 0
3 years ago
Use the Distributive Property to simplify each expression:
natta225 [31]

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3 years ago
If A = (-2, -4) and B = (-8, 4), what is the length of AB?
svetoff [14.1K]

Answer: OPTION D

Step-by-step explanation:

To solve this exercise you must use the formula for calculate the distance  between two points, which is shown below:

d_{(A,B)}=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Now, you must substitute the points given in the problem into the formula:

A(-2,-4)

B(-8,4)

d_{(A,B)}=\sqrt{(-8-(-2))^2+(4-(-4))^2}

Then, the result is:

d_{(A,B)}=10units

5 0
3 years ago
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Answer:

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x-5+5=6+5

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so answer is 11

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