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Aloiza [94]
2 years ago
11

Use DESMOS: What is the equation

Mathematics
1 answer:
Masja [62]2 years ago
6 0

y=mx+c

I picked the points (0, -4) and (-2,-10) to find the gradient of the line

M= rise/run

= 6/2

=3

Y-intercept is at - 4

Y= 3x - 4 is equation of the line given

Reciprocal of 3 is 1/3

(m1 x m2 = - 1)

So, to make - 1, our second gradient should be negative.

Gradient of the perpendicular line will be - 1/3

Y= - 1/3x + c

Substitute value of x & y into the equation

(-6,6) means x = - 6, y = 6

y = - 1/3x +c

6 = - 1/3 x - 6 + c

6 = 2 + c

-2

4 = c

Thus, final equation we're after will be:

y= - 1/3x + 4

Hope this helps!

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PtichkaEL [24]

Answer:

R V

1  9π in³ 

2  36π in³

3  81π in³

Step-by-step explanation:

For, r = 1

V = π(1)²9 = 9π in³

For, r = 2

V = π(2)²9 = 4*9π in³ = 36π in³

For r = 3

V = π(3)²9 = 9*9π in³ = 81π in

R V

1  9π in³ 

2  36π in³

3  81π in³

6 0
3 years ago
From a point 80 m from the base of a tower, the angle of elevation to the top of the tower is 28°. How tall is the tower?
elena-s [515]

Answer:

43m

Step-by-step explanation:

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3 years ago
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I’m so confused I don’t know how to subtract fractions. What is 2+2-1 2/3
Alexxandr [17]

Answer:

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Step-by-step explanation:

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A circular swimming pool is 21 feet in diameter. What is the circumstances of the swimming pool?
Reptile [31]
Hello there!


21 * 3.14 = 65.94


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The circumstances of the swimming pool is 65.94
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3 years ago
Jane took a train traveling at an average speed of 60 mph from Boston, MA to Washington, D.C. The trip took 8 hours. On her way
Trava [24]

Answer:

6.4 minutes

Step-by-step explanation:

The question gave us the following details:

Average speed = 60mph

Time spent on trip = 8 hours

Average speed of express train on way back = 75mph

T = distance/speed

D = distance

V = speed

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Such that

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Thank you!

7 0
3 years ago
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