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s344n2d4d5 [400]
3 years ago
10

Help me pleaseeeeeee

Mathematics
1 answer:
Keith_Richards [23]3 years ago
6 0
The top one of it is the right answer for this one to get it
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docker41 [41]

THE ONE ABOVE IS WRONG

HOPE THIS HELPS!

4 0
3 years ago
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A ball is thrown into the air from an apartment balcony and falls to the ground. The height of the ball, h metres, t seconds aft
andriy [413]

Answer:

1+2\sqrt{2} seconds

Step-by-step explanation:

When the ball hits the ground, its height will obviously be 0. Therefore, you can set up the equation the following way:

0=-5t^2+10t+35 \\\\-5(t^2-2t-7)=0

Plugging this into the quadratic equation, you get:

t=\dfrac{2\pm\sqrt{4+28}}{2}= \\\\\dfrac{2\pm4\sqrt{2}}{2}= \\\\1\pm2\sqrt{2}

Since the time must be positive, it takes the ball 1+2\sqrt{2} seconds to hit the ground, or around 3.828. Hope this helps!

7 0
3 years ago
The value of y varies directly with x. When y = 25, x = 6 1/4. What is the value of y when x is 12? 4
elena-14-01-66 [18.8K]

Answer:

Step-by-step explanation:

if y = 25 when x = 6 1/4, then when y = 12, that would mean that we divided 25  by 2.0833. So we can do 6 1/4 divided by 2.0833 is the answer which is 3.00004800077.

(i think)

(probably wrong)

6 0
3 years ago
HOW MANY DEGREES IN A SUPPLEMENTARY ANGLE???
monitta

Answer:

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Step-by-step explanation:

4 0
3 years ago
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Which mapping diagram does not represent a function? es A) 2 26 347 4 8 B) 2 37 4 18 C) B 2 6 3-47 4 8 D) 2 3 4 6 7 8​
Jobisdone [24]

Answer:

I think it is A

Step-by-step explanation:

4 0
3 years ago
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