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3 years ago

3x-2y=13 2x+3y=-16 are these lines parallell or perpendicular or neither

1 answer:

6 0

3x - 2y = 13
-2y = -3x + 13
y = 3/2x - 13/2...slope is 3/2, y int is -13/2

2x + 3y = -16
3y = -2x - 16
y = -2/3x - 16/3...slope = -2/3, y int is -16/3

perpendicular lines will have negative reciprocal slopes. To find the negative reciprocal of a number, flip the number and change the sign.
On the 1st equation, the slope was 3/2....find its negative reciprocal.....flip it, making it 2/3....change the sign...making it -2/3. So the negative reciprocal of 3/2 is -2/3.

So if one equation has a slope of 3/2 and another equation has a slope of -2/3, then these lines are perpendicular <==

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boyakko [2]

Answer:

C is correct. If the scale factor is greater than 1, the image is an enlargement. The segment UT could be an enlargement of the segment ST.

Step-by-step explanation:

A. If > 1, then the image of could be .

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D.If = 2, then the image of is itself.

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D is not correct. If the scale factor is 1, the figure and the image are congruent.

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3 years ago

during a promotional event a sporting good store gives a free t-shirt to every 8th customer and a free water bottle to every ten

sergij07 [2.7K]

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3 years ago

Hey do any of yall now what 65'6 x777

katrin2010 [14]

Answer:

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2 years ago

If f(x) = 6x-4 what is the value of f(8)

Vinvika [58]

Answer:

f(8) = 44

Step-by-step explanation:

f(x) = 6x-4

Let x = 8

f(8) = 6(8) - 4

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8 0

3 years ago

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Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest

marshall27 [118]

Answer:

5) 27/70

6) 90

Step-by-step explanation:

5) The first step in this problem is to figure out the amount of total spins. To do so, add up all of the numbers in the column "Frequency".

18 + 15 + 27 + 10 = 70.

Now, look at the amount of times the spinner landed on green. This is 27 times. So, the ratio of green spins to total spins is 27:70, or 27 out of 70 spins. Converting this to a fraction, we get the final answer, 27/70.

6) To solve this problem, we have to first do the same steps as the previous problem, but with the color red. There are 70 total spins, and 18 red spins. Therefore, the ratio is 18:70. However, this problem wants the total number of spins to be 350. In other words, 70 needs to become 350. To do this, multiply each side of the ratio by 5. The ratio becomes 90:350. Using this ratio, we can determine that a solid prediction is 90 red spins out of 350 total spins.

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3 years ago

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