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Leni [432]
3 years ago
15

Find y if the line through (8, y) and (9, 1) has a slope of 3.

Mathematics
2 answers:
liq [111]3 years ago
8 0

Answer:

Step-by-step explanation:

Slope m = (y2 - y1)/(x2 - x1)

m = 3, y2 = 1 , y1 = y, x2 =9, x1 = 8

: 3 = (1 - y)/(9 - 8)

3 = (1 - y)/1

3 = 1 - y

Collecting like terms

y =>1 - 3

y = -2

statuscvo [17]3 years ago
7 0

Answer:

4

Step-by-step explanation:

8 is one away from 9. 4 is three away from 1. 3/1=3. Therefore y=4

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Geometry math question
lawyer [7]

Supplementary angles add up to 180

so (2x + 3) + (3x + 2) = 180

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<u>Solve x:</u>

2x + 3 + 3x + 2 = 180

5x + 5 = 180

5x = 175

x = 35

.

<u>Find the angles:</u>

One angle = (2x + 3) = 2(35) + 3 = 73°

Other angle = (3x + 2) = 3(35) + 2 = 107°

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Answer: The two angles are 73° and 107°

4 0
3 years ago
Read 2 more answers
What is the difference in time between crossing a bridge that is 2,737 meters long at an average speed of 322 meters per minute
egoroff_w [7]

so the bridge is 2737 meters long.

at a speed of 322 m/min, meaning for for every passing minute, there are 322 meters covered, so we can simply divide 2737/322 to get a "minute" amount, namely 8.5, at 322 m/min, it takes 8.5 minutes to cross it.

now, if we instead are going slower, at 80 m/min, 80 meters to a minute, then it'll be 2737/80 minutes, namely 34.2125.

their time difference is 34.2125 - 8.5  = 25.7125 minutes, so about 25 minutes and 43 seconds.

3 0
3 years ago
a ball is thrown vertically upward from the ground with an initial velocity of 60 ft/sec. how high will the ball go?
vazorg [7]

Answer:

The ball will go to maximum height of 56.25 meters.

Step-by-step explanation:

It is given that, a ball is thrown vertically upward from the ground. Initial velocity of the ball, v = 60 ft/sec

Initial height is 0 as the ball is thrown from ground. The equation of projectile is given by :

h(t)=-16t^2+vt+h

h = 0

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We need to find the maximum height reached by the ball. For maximum height,

\dfrac{dh(t)}{dt}=0

\dfrac{d(-16t^2+60t)}{dt}=0

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Put the values of t in equation (1). So,

h(t)=-16(1.875)^2+60(1.875)

h(t) = 56.25 meters

So, the ball will go to maximum height of 56.25 meters. Hence, this is teh required solution.

3 0
3 years ago
Travis eats 28 cookies in 4 weeks, Eating the same number of cookies each week. Dylan eats 24 cookies in three weeks, eating the
dlinn [17]

Answer:

Travis needs to slow down

Step-by-step explanation:

Stop eating cookies, Travis.

5 0
3 years ago
This is the last part, you don't have to do number (6). I really appreciate the help so far!!!
marysya [2.9K]

Answer: just saying i realy need points or i cant ask questions anyways 4+x/-20=-40  is prob 45 or somthing

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