100 POINTS plz help Chuck drops a rock from a height of 70 m. How long will it take the rock to hit the ground?
2 answers:
Answer:
3.8 seconds
Step-by-step explanation:
h(t) = −4.9t² + v0t + h0,
0 = -4.9t² + 70
4.9t² = 70
t² = 100/7
t = 3.77964473
Answer:
3.8
Step-by-step explanation:
We are going to plug in the values of the equation, so h(t)=-4.9^2+v0t+h0 will
now be h(t)=-4.9^2+0+70
Now we will find the a b and c of the equation, a=-4.9 b=0 c=70
Now we must find the discriminant of the equation, which the equation for that is D=b^2+(-4)(a)(c)
So D=1,372
Now we use the quadratic formula (see picture below for finished product)
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f(x)=x-1
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Answer:
-60/72 = -5/6
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HOPE THIS WILL HELP U FRIEND
Answer:
Between 7 and 8
Step-by-step explanation:
6^2 = 36
7^2 = 49
8^2 = 64
9^2 = 81
since 61 is between 7^2 and 8^2, √61 is between 7 and 8