1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
anastassius [24]
3 years ago
13

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?

Mathematics
2 answers:
elixir [45]3 years ago
7 0

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

lord [1]3 years ago
4 0

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)

You might be interested in
Determine if the statement is always, sometimes, or never true:
andrezito [222]
The answer is:  "never".
_____________________________

7 0
2 years ago
Read 2 more answers
PLS HELP ME I WILL MARK!!!!~ don't need to show work
Sauron [17]
I’m not so sure, but I think it might be:
f(x)=x-1
Sorry if wrong
6 0
3 years ago
Read 2 more answers
4. Express the following rational number in its lowest form :
MaRussiya [10]

Answer:

-60/72 = -5/6

-24/36 = -2/3

91/364 = 45/182

3 0
3 years ago
Read 2 more answers
Simplify the following, leaving your answer in index form- attached document.
boyakko [2]

HOPE THIS WILL HELP U FRIEND

5 0
3 years ago
Which two numbers doesStartRoot 61 EndRoot lie between on a number line?
denpristay [2]

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

7 0
3 years ago
Read 2 more answers
Other questions:
  • Janet read a total of 14 books over 7 months.after belonging to the book club for 8 months,how many books will janet have read i
    11·1 answer
  • Determine the distance between point (x1, y1) and point (x2, y2), and assign the result to pointsdistance. the calculation is: d
    8·1 answer
  • Which shape has opposite sides that are parallel and 4 sides that are always the same length? A. parallelogram B. rhombus C. tra
    7·1 answer
  • Solve by factoring
    12·2 answers
  • 100 POINTS HELP PLEASEEEE !!!HURRY!!!
    14·2 answers
  • Carys is checking her tax bill for the last year.
    10·1 answer
  • 110% of 90 is what number
    7·1 answer
  • Find the value of A
    14·1 answer
  • Hey can I please get some help?
    6·1 answer
  • You want to buy a computer. The computer costs $1,200. How much
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!