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boyakko [2]
3 years ago
8

Which line is perpendicular to y=7x-3 if the perpendicular line passes through the point (7, 7)? a) y=-7x-1 b) y=-7x+8 c) y=-1/7

x+8 d) y=-1/7x+1
Mathematics
1 answer:
Norma-Jean [14]3 years ago
3 0

Perpendicular lines have an opposite reciprocal slope, therefore, the slope of the perpendicular line is:

-1/7

So far, y = -1/7x + b. Now we need to plug in (7, 7) into x and y for our equation.

7 = -1/7(7) + b

Simplify the right side

7 = -1 + b

Add 1 to both sides

8 = b

The equation of the perpendicular line is:

y = -1/7x + 8

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A red candle is 8 inches tall and burns at a rate of 7/10 inch per hour.
WITCHER [35]

Answer:

4 Hours

Step-by-step explanation:

we will set up two linear equations first by taking the initial height if each candle and subtracting the rate they burn at times our input variable of time (x) equal to height (y)

So, 8-7/10x=y and 6-1/5x=y

then, because both equations equal y you can set them equal to each other so

8-7/10x=6-1/5x

Finally, solve for x

8-7/10x=6-1/5x

subtract 6 from both sides

2-7/10x=-1/5x

add 7/10 x to both sides (1/5x=2/10x)

2=5/10x

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6 0
3 years ago
Consider the numbers 14.25 and 0.86.Part A Which operation would result in the greatest solution, addition or multiplication? Ex
Sauron [17]

Answer:

Addition

Step-by-step explanation:

Here, we want to state the operation that would result in the greater solution.

The operation is addition. The reason why multiplication will yield a relatively less result is that one of the digits is less than 1. So this will cause the reason why the value that will be obtained from the multiplication to be less than what we will have in the addition

5 0
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Complete the point-slope equation of the line through (-8, -8) and (-7, 9)
neonofarm [45]

Answer:

Request equation :

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Step-by-step explanation:

As we know that if (x1,y1) & (x2,y2) be two points then it's point slope form equation can be written as

y-y1 = (y2-y1)/(x2-x1) {x-x1}

now we have (-8,-8) and (-7,9) then the equation will become

y-(-8)=(9-(-8))/(-7-(-8)) {x-(-8)}

i.e, y+8=17(x+8)

i.e, y -17x =128

✌️:)

5 0
3 years ago
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