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melomori [17]
3 years ago
8

What is the slope of a line that passes through the points (1 , 5) and (-1 , 3)?

Mathematics
1 answer:
yuradex [85]3 years ago
5 0
The slope formula is (y2-y1)/(x2-x1)
y2=3
y1=5
x2=-1
x1=1

Now let’s replace the numbers on the formula.
3-5/-1-1=-2/-2=1 the slope is 1
I hope this helped :)
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A projectile is launched from ground level with a initial velocity of Vo feet per second. Neglecting air resistance, its height
antiseptic1488 [7]
The height at t seconds after launch is
s(t) = - 16t² + V₀t
where V₀ = initial launch velocity.

Part a:
When s = 192 ft, and V₀ = 112 ft/s, then
-16t² + 112t = 192
16t² - 112t + 192 = 0
t² - 7t + 12 = 0
(t - 3)(t - 4) = 0
t = 3 s, or t = 4 s

The projectile reaches a height of  192 ft at 3 s on the way up, and at 4 s on the way down.

Part b:
When the projectile reaches the ground, s = 0.
Therefore
-16t² + 112t = 0
-16t(t - 7) = 0
t = 0 or t = 7 s

When t=0, the projectile is launched.
When t = 7 s, the projectile returns to the ground.

Answer: 7 s

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3 years ago
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Vladimir79 [104]
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3 0
3 years ago
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What is the value of x in the equation 2.5(5x-5)=10+4(1.5+0.5x)
Alexus [3.1K]

Answer:

x= 19/7

Step-by-step explanation:

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3 years ago
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Given x=5 + √16 , select the value(s) of x. -11 1 9 21
Schach [20]

Answer:

The answers would be 9 and 1.

Step-by-step explanation:

x= 5±√16 can be separated into two equations.

x=5+√16 and x=5-√16

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2. 5-√16 can be solved by simplifying √16 which is 4. So then it would become 5-4 which equals 1.

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