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max2010maxim [7]
3 years ago
14

Solve the equation: 3(x−3) + 2x= −49

Mathematics
1 answer:
liraira [26]3 years ago
4 0
X = - 8 should be the answer
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Please help
Schach [20]

Answer:

Hence, option: B is correct (11.02 seconds)

Step-by-step explanation:

Spencer hits a tennis ball past his opponent. The height of the tennis ball, in feet, is modeled by the equation h(t) = –0.075t2 + 0.6t + 2.5, where t is the time since the tennis ball was hit, measured in seconds.

Now we are asked:

How long does it take for the ball to reach the ground?

i.e. we have to find the value of t such that height is zero i.e. h(t)=0.

-0.075t2+0.6t+2.5=0

or 0.075t^2-0.6t-2.5=0

i.e. we need to find the roots of the above quadratic equation.

on solving the equation we get two roots as:

t≈ -3.02377 and t≈11.0238

As time can't be negative; hence we will consider the value of t as t≈11.0238.

Hence it takes 11.02 seconds for the ball to reach the ground.

Hence option B is correct (11.02 seconds).

7 0
3 years ago
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Help fast pls i dont have much time​
Ugo [173]

Answer:

5 yards

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP!! 25 POINTS
Mariana [72]

Answer:

the reflection is across the x- axis

Step-by-step explanation:

if you see that the y's in the second graph are negative then the reflection is across the x-axis

6 0
2 years ago
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HRLP ME PLEASE BRO PLEASE ALL I NEED IS THE ANSWER
earnstyle [38]
Answer:
It’s the first one
6 0
2 years ago
Help me please I really need to get a c or something good please
matrenka [14]
Just plot the points on a graph.
7 0
3 years ago
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