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alexgriva [62]
3 years ago
15

Suppose y varies directly with x. When X is 2, y is 10. What is y when x is 4?

Mathematics
1 answer:
melomori [17]3 years ago
6 0
X:y

2/10 = 4/x

Cross multiply

2x X= 10x4

2x = 40

Eliminate

2x/2 = 40/2

x = 20
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Given the following 2 equations, state whether these equations are parallel, perpendicular, or neither.
stiks02 [169]

Answer:

Neither

Explanation:

The slope-intercept form of the equation of a line is generally given as;

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Two lines are said to be parallel if they have the same slope. Looking at the two given equations below, we see that the slope of the 1st one, 5/7, is different from the slope of the 2nd one, 7/5;

\begin{gathered} y=\frac{5}{7}x+14 \\ y=\frac{7}{5}x-20 \end{gathered}

Two lines are said to be perpendicular if their slopes are negative reciprocals of each other, let's go ahead and compare their slopes;

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So the two lines are not perpendicular to each other. It, therefore, means that the correct answer will be Neither.

3 0
1 year ago
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bazaltina [42]

Answer:

D (You got it right.)

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6 0
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Simplify the expression. 11c + 3(-5c + 4d)
tamaranim1 [39]
Perform indicated multiplication:

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(11c-15c)+12d

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8 0
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