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3 years ago

CAN SOMEONE HELP?????????????????????????????????

Mathematics

2 answers:

Likurg_2 [28]3 years ago

7 0

Answer: perpendicular = 5/7

parallel = -7/5

Step-by-step explanation:

Zanzabum3 years ago

5 0

Answer:

5/7 and -7/5

Step-by-step explanation:

slope is - 7/5

if line is written as Ax + By + C = 0

the slope is -A/B

if you work that equation you have

By = - Ax - C

y = (-A/B) × x - C/B

and term multiplying the x is the slope in case you had doubts about the - A/B

the multiplication of the slopes of 2 lines that are perpendicular is - 1

x × -7/5 = -1

x = 5/7

the slope of 2 lines that are parallels is the same, so slope = -7/5

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How many ways can a group of 8 students be selected from 9 students?

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3 years ago

A car rental agency rents 190 cars per day at a rate of 29 dollars per day. for each 1 dollar increase in the daily rate, 5 fewe

Leviafan [203]

The equation that we can create from this situation is:

i = (190 – 5 x) * (29 + x)

where i is the income and x is the increase in daily rate

Expanding the equation:

i = 5510 + 190x – 145x - 5x^2

i = -5x^2 + 45x + 5510

Taking the 1st derivative:

di/dx = -10x +45

Set to zero to get the maxima:

-10x + 45 = 0

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7 0

2 years ago

Find an equation of the circle whose diameter has endpoints (1,-4) and (-3,6).

MAVERICK [17]

Answer:

$(x+1)^2+(y-1)^2=58$

Step-by-step explanation:

To find the equation of this circle, we must know the center and the radius.

We can find the radius by dividing the value of the distance formula by 2 (since $r=\frac{d}{2}$ ):

$d=\sqrt{(-3-1)^2+(6-(-4))^2}=\sqrt{116}\\r=d/2=\frac{\sqrt{116}}{2}$

We can then find the center of the circle by averaging the coordinates:

$\frac{1+(-3)}{2}=-1$

$\frac{-4+6}{2}=1$

Then, we substitute these values into the equation of a circle:

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3 0

3 years ago

Simon says "five time my age 4 years ago is the same as three time my age in 2 years" how old is simon

omeli [17]

Simon is 13 years old

Let x be Simon's age

Thus 4 years ago his age was (x - 4) and 2 years from now his age is (x + 2)

Hence 5(x - 4) = 3(x + 2)

distributing both sides gives

5x-20 = 3x + 6

subtract 3x from both sides of the equation

5x - 3x - 20 = 6

2x - 20 = 6

add 20 to both sides

2x = 6 + 20 = 26

divide both sides by 2

x = $\frac{26}{2}$ = 13

Simon is 13 years old

7 0

2 years ago

(QUICK DUE IN 50 MINUTES)

nevsk [136]

Slope =2/3
70,80) (10,40)
(80-40)/(70-10) = 40/60
4/6
2/3

8 0

2 years ago