Given:
The height of an object, f(x), after x seconds is
To find:
The time taken be object to hit the ground.
Solution:
We have,
The object will hit the ground if the height is 0, i.e., f(x)=0.
Divide both sides by 2.
Taking square root on both sides.
Time cannot be negative. So, x=4.
Therefore, the object will hit the ground after 4 seconds.
Answer:
x = -2
Step-by-step explanation:
-2x + 4x = -4 + 0
2x = -4
2x/2 = -4/2
x = -2
Hope this helps.
alright so you need to find the unit rate for both of these bought items.
5.25(5 1/4) pounds is equal to $2.10 if you set it into an equation
5.25x = $2.10
x represents how much is the price for one pound of banana
to find x you divide $2.10 by 5.25
you can either plug that into a calculator (.4 is the answer)
to divide a fraction
2.10 / 1 ÷ 21/4
switch the 21/4
2.10/1 ÷ 4/21
instead of using division to solve this you actually multiply!(don't ask me why)
2.10 × 4 = 8.4
21 × 1 = 21
now divide 8.4 by 21 = $0.4 for each pound of bananas
do the same on the other persons payment
3.25x = 6.5
x = 0.5
now you answer it. which one is cheaper?
I think its <span>27.59375 </span>
<span>please make brainliest answer</span>
Answer:
Step-by-step explanation:
The First Question !
This is simple,
So first we set this problem up
2 Red + 3 Blue + 7 Green = 12 Total Marbles
The formula for calculator probability is
# of favorable outcomes / # of possible outcomes
The number of favorable outcomes we have is 3 because we are trying to find the probability of pulling out a blue marble
The number of possible outcomes is 12 because we have 12 total marbles
3/12 simplifies to 1/4 which is .25
The probability of drawing a blue marble is 0.25 or 25%
Second Question!
The probability of getting heads on the toss of a coin is 0.5. If we consider all possible outcomes of the toss of two coins as shown, there is only one outcome of the four in which both coins have come up heads, so the probability of getting heads on both coins is 0.25. The second useful rule is the Sum Rule.
I Hope It's Helpful :0
