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vredina [299]
3 years ago
12

Describe the process of writing the equation of a line

Mathematics
1 answer:
lara [203]3 years ago
7 0
If you are writing in slope-intercept form:

You first find the slope.

Put the slope in the equation.

Substitute any point into the equation and find the y-intercept. 
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If a projectile is launched vertically upward from 800 ft above the ground with an initial velocity of 80 ft per second, its hei
tiny-mole [99]

Hello!

10 seconds to return to the ground.

7 seconds to reach 576 feet above the ground.

Find the amount of time taken to reach the ground by setting the equation equal to 0:

0 = -16t² + 80t + 800

Factor out -16 from the equation:

0 = -16(t² - 5t - 50)

Factor the terms inside of the parenthesis:

0 = -16(t - 10)(t + 5)

Find the zeros:

t - 10 = 0

t = 10

t + 5 = 0

t = -5

Time can only be positive in this instance, so the correct answer is 10 sec.

Find the time by substituting in 576 for the height:

576 = -16t² + 80t + 800

Subtract 800 from both sides:

-224 = -16t² + 80t

Rearrange:

0 = -16t² + 80t + 224

Simplify:

0 = -16(t² - 5t - 14)

0 = -16(t - 7)(t + 2)

t = 7 seconds.

8 0
3 years ago
Which statement is true about the solutions for the equation 5y + 8 = −2?
amm1812
5y=-10

Y=-2 it has one solution
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3 years ago
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Jeffrey earned a gross income of $59,860 last year. He made $1,933.07 in student loan interest deductions, donated $3,702 to his
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The answer is 39226.93

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give more information

Step-by-step explanation:

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The height of a cone is two times its base diameter. What is the volume of the cone in terms of its base radius r?​
Fudgin [204]

Answer:

B

Step-by-step explanation:

Formula for finding the volume of a cone:  V=\pi r^{2} \frac{h}{3}

From the question, we can tell that the height, h, is equal to 2d or 4r.

h = 4r.

Substitute h into the volume formula:

V=\pi r^{2} \frac{4r}{3}

Rearrange to get the final equation of:

V=\frac{4}{3} \pi r^{3}

8 0
2 years ago
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