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Papessa [141]
3 years ago
15

Someone help I’m LAAAAZYYYY

Mathematics
1 answer:
zepelin [54]3 years ago
4 0

Answer:

It is 8,7

Hope this helps!

Step-by-step explanation:

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Tom drops a coin from the top of a building. Tom is 90 meters from the ground when he drops the coin. A) What is the height of t
Delvig [45]
Disregarding air friction, the distance traveled by an object due to gravity is : H = 0.5*g*t^2.   g is the gravitational constant at the surface of earth.  

g= 9.81 m/s^2  

After 3 seconds, Distance = .5*9.81*9 = 44.15 meters traveled.   

Since it was dropped from a height of 90 meters, the current height is 90 - 44.15 = (a) 45.85 meters  

(b) It has to travel 90 meters to hit the ground . So we must find t  

Using the same equation  

t = (2*H/g)^.5 

 t = (2*90/g)^.5 = 4.28 seconds until it hits the ground
3 0
3 years ago
Plz do this and show all the work. Use factoring
Anika [276]
Answer:
x1=-1, x2=4/5

Step by step explanation:
5x^2 - 4 + x = 0
Use the commutative property to reorder the terms:
5x^2+x-4=0
Write x as a difference:
5x^2+5x-4x-4=0
Factor out 5x from the expression:
5xx(x-1)-4x - 4=0
Factor out -4 from the expression:
5xx(x+1) - 4 (x-1)=0
Factor out x+1 from the expression:
(x-1) x (5x-4) =0
When the product of factors equal 0 at least one factor is 0
X + 1 = 0
5x - 4 = 0
Solve the equation:
The equation has two solutions
X1=-1, x2 = 4/5
3 0
3 years ago
Construct the line perpendicular to ⇒NO at point P.
suter [353]
The 3rd one is correct, you would put a compass on Point P and draw a small arc on lIne NO on each side of Point P, then place the compass on the line at those points and draw arcs above and below P then connect those points with a ruler.
7 0
3 years ago
Read 2 more answers
What is the y-intercept of the line 7 − 5 = 35?
sergejj [24]

Answer:

There is none

Step-by-step explanation:

3 0
3 years ago
A box of cookies cost $2 before tax. Find the after-tax cost if the sales tax was 8.5%.
adell [148]

Answer:

$2.17 total

Step-by-step explanation:

2 (0.85) = v2.17

7 0
3 years ago
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