A quarter falls off a building that is 144
feet tall. If the equation for height as a
function of time is
h(t) = -16t2 + initial height where t is
time in seconds and h(t) is height in
feet, how many seconds will it take for
the quarter to hit the ground?
Answer:
3 seconds
Step-by-step explanation:
Initial height = 144 feet
t = Time taken
The equation of the height from the ground is
[tex]h(t)=-16t^2+\text{Initial height}[/tex]
The time taken to reach the ground is needed. Here the ground is taken as reference so [tex]h(t)=0[/tex]
[tex]0=-16t^2+144\\\Rightarrow -144=-16t^2\\\Rightarrow t=\sqrt{\dfrac{144}{16}}\\\Rightarrow t=3\ \text{s}[/tex]
So, time taken by the quarter to reach the ground is 3 seconds.
Points and Brainliest Giveaway!! (Btw, you still have to answer the question)
If x = 4, and y = 8.
3x + 2y = 7x + 4y
Is the expression true?
Answer:
Step-by-step explanation:
3(4)+2(8)=7(4)+4(8)
12+16=28+32
28=60
Therefore, the expression is not true because they are not equal to each other
Please mark answer as brainliest
Answer:
3(4) + 2(8) = 7(4)+ 4(8)
12+16= 28+32
28 =60
No, the expression is not true
Can anybody please help me please
Answer:
-8 > -10
Step-by-step explanation:
-8 is greater than -10.
Answer:
[tex] \huge \boxed{ \boxed{ - 8 > - 10}}[/tex]
Step-by-step explanation:
in case of negative numbers the numbers which are big are the small and vise versaPotatoes cost 1.20 euros per kilogram work out the cost of 5 kilograms of potatoes
Answer:
Step-by-step explanation:
cost for 1 kg potatoes = 1.20 euros
Cost of 5 kilograms of potatoes
= 5 * 1.20 euros
= 6 euro
Hope it helps :)
Can anyone help me I need this help.
Answer:
sorry we cant see the work I would help if I see the pitcher plz
Step-by-step explanation:
Marc and Anthony are pulling weeds. The can pull 25 weeds every three minutes. How many weeds can they pull in 15 minutes?
Answer:
125 weeds in 15 mins
Step-by-step explanation:
Plz help if correct ill give brailiest
Answer:B
Step-by-step explanation:the answers B because the closed circle is greater that or equal too, and because the inequality is greater than the arrow points to the left. B, the dot is on 7 which if we add that to 18 is 25 which is the greatest number that can work for this inequality making this answer correct.
Hope this helps you understand it!
Help me because I need to get a 10/10
Plz help iff correct ill give Brainlyest
[tex]x-5\leq 12[/tex]
You add 5 to each side
[tex]x\leq 17[/tex]
This inequality will be correct if x is less than or equal to 17. Meaning any number less than 17 and including 17 will make the equation correct. For this reason you pick the one with a filled circle. The answer is H
What is
0.8×10⁴=
0.8×(10×4)=32.00.8×(10×4)=32.0
0.8×(10+10+10+10+10)=32.00.8×(10+10+10+10+10)=32.0
0.8×(10×10×10×10)=80,0000.8×(10×10×10×10)=80,000
0.8×(10×10×10×10)=8,0000.8×(10×10×10×10)=8,000
Answer:
8000 is the answer.
Step-by-step explanation:
0.8 x 10⁴ = 8000
8000 is ya answer sir
A company introduced a much smaller variant of its tablet, known as the tablet junior. Weighing less than 11 ounces, it was about 50% lighter than the standard tablet. Battery tests for the tablet junior showed a mean life of 10.25 hours. Assume that battery life of the tablet junior is uniformly distributed between 7.5 and 13 hours.
(a)
Give a mathematical expression for the probability density function of battery life.
f(y) =
(b)
What is the probability that the battery life for a tablet junior will be 10.5 hours or less? (Round your answer to four decimal places.)
(c)
What is the probability that the battery life for a tablet junior will be at least 11.5 hours? (Round your answer to four decimal places.)
(d)
What is the probability that the battery life for a tablet junior will be between 8.5 and 10.5 hours? (Round your answer to four decimal places.)
(e)
In a shipment of 100 tablet juniors, how many should have a battery life of at least 12 hours? (Round your answer to two decimal places.)
tablet juniors
Answer:
showed a mean life of 10.25 hours. Assume that battery life of the tablet junior is uniformly distributed between
Step-by-step explanation:
5. During the day a person consumes 360
calories from fruit. How many calories does
this person consume in their daily diet?
A. 1,600
B. 2,300
C. 2,400
D. 2,600
Answer: C :2400
Step-by-step explanation:
Part over whole and percent over 100 you put 15 as your percent and 100 over it then you put 360 as your part then you multiply 360x100=36,000 you divide that with 15 and you get 2,400
What's the surface area for this?
Answer:
382
Step-by-step explanation:
Surface area = 2(7 × 8) + 2(7 × 9) + 2(8 × 9)
= 382
Answer:
SA=382
Steps:
SA=2(7×8)+2(7×9)+2(8×9)
SA=2×56+2×63+2×72
SA=112+126+144
SA=382
help me please I need help
Answer:
DO NOT GO ON THST LINK< IT WILL SEND A VIRUS TO YOUR DEVICE!!!
Step-by-step explanation:
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately
σ=36.6. You would like to be 90% confident that your esimate is within 4 of the true population mean. How large of a sample size is required?
Answer:
Hmmmmm
Step-by-step explanation:
Given that ABCD ~ EFGH, find the value of x
Answer:
x = 8
Step-by-step explanation:
Recall: Ratio of the corresponding side lengths of two similar figures are equal.
Therefore,
EF/AB = GH/CD
6/4 = 12/x
Cross multiply
6*x = 12*4
6x = 48
Divide both sides by 6
6x/6 = 48/6
x = 8
The first three terms of a sequence are given. Round to the nearest thousandth (if necessary). 16, 8,4,... 16,8,4,... \text{Find the 10th term.} Find the 10th term.
Answer:
0.03125
To the nearest thousandth = 0.031
(d) Chris chooses a card at random, replaces it, then chooses a
cards she chooses has the letter M printed on it.
(e) Graham chooses a card at random and does not replace it. He continues until he chooses a card with the letter M
printed on it. Find the probability that this happens when he chooses the 3rd card.
Question 2
Percy throws a fair dice until he gets a five.
...
:
20
(a) Work out the probability that Percy gets the five on his first throw.
(b) Find the probability that he has to throw the dice exactly twice to get the five.
(c) Calculate the probability that he will have the throw the dice more than twice to get a five.
Answer:
Step-by-step explanation:
I'm assuming you have 26 cards each with a different letter on it.
(d) Prob(Not M, Not M , M)
= 25/26 * 25*26 * 1/26
= 625/17576
or 0.036 to nearest thousand
(e) Prob(Not M, Not M, M) without replacement
= 25/26*24/25*/1/24
= 1/26
or 0.038 to nearest thousandth.
2(a)
1/6.
(b)
5/6 * 1/6
= 5/36.
(c)
5/6 * 5/6
= 25/36
What is the common denominator of 1 4
Can someone help me? I’ll reward points + brainalist
Answer:
B
Step-by-step explanation:
Since the only difference in the aquariums is the length, you can find the difference by multiplying the difference in length with the rest of the dimensions.
Difference in length = 4ft - 3ft
= 1ft
Difference in volume = 1ft × 2ft × 1ft
= 2ft³
I Need help with these please
9514 1404 393
Answer:
5. (d) 8
6. (c) 120°
Step-by-step explanation:
5. OC is a radius, just like BO is. The angle at B is a right angle, so the Pythagorean theorem can be used to find BO.
AO² = BO² +BA²
BO² = AO² -BA² = 17² -15² = 289 -225 = 64
BO = CO = √64 = 8
__
6. The measure of arc IK is the same as the measure of the central angle. If we name the circle center X, then arc IK = ∠IXK = ∠HXL because those angles are vertical angles.
arc IK = 120°
not good at ms\ath so can you help me
Answer: 20
Step-by-step explanation:
Mean and average of numbers are calculated the same thing
To find the mean, you add up all the numbers and divide them by the number of values there are
In this case, there are 6 values
(14 + 17 + 21 + 28 + 40) / 6 =
120 / 6 =
20
What percent of 64 is 26?
40.63%
(adding extra words so it's longer than 20 don't mind me here)
What is the area of a square if the half of the diagonal is 6
Answer:
72
Step-by-step explanation:
Cut the square into two equal triangles along the diagonal
You know that half of the diagonal is 6 so multiply that by 2 to get 12 which is the hypotenuse of your triangles
Then use the pythagorean theorem to solve for the sides
a^2 + b^2 = 12^2
a^2 + b^2 = 144
Since the original shape was a square both sides a and b are equal
a^2 = b^2
a^2 + a^2 = 144
2a^2 = 144
a^2 = 144/2
a^2 = 72
a = [tex]\sqrt{72}[/tex]
Since a = b then a = [tex]\sqrt{72}[/tex] =b
Multiply both sides a and b to get the area of the square
[tex]\sqrt{72}[/tex] * [tex]\sqrt{72}[/tex] = 72
simplify it the following:
X u ( X n Y )
Answer:
X^2unY
Step-by-step explanation:
Xu(XnY)
= X^2unY
sorry if the process and answer is wrong.
Read the writing prompt for an argumentative essay.
Studies show that teenagers spend hours a day on social media. What impact do social media platforms have on teenagers’ mental health? Write an essay that argues your viewpoint on this topic. Support your claim with reasons and evidence.
Which source would be the most reliable to use for research of the prompt?
an article from a .com website
an article from a .net website
an article from a .gov website
an article from a .org website
I will give brainliest for the correct answer!!
Answer:
an article from a .gov website
You inherit $10,000 and decide to invest the money in mutual funds for your 5 year old daughter's
future college expenses. After 6 years pass you decide to check on the value of your investment. You
find the balance after 6 years to be 18,000.
a) What is the growth rate in these 6 years for your investment. Round to the nearest thousandth.
b) Write an explicit equation for your investment.
c) Assuming your investment continues to grow at this rate, what is the value in 12 years?
Answer:
Thats confusing lol
Step-by-step explanation:
sprry
Please help me with number 6
Ellie worked 6 hours on Monday, 4.5 hours on Tuesday, 4 hours on Wednesday, 5.75 hours on Thursday, and 3 hours on Friday. If she is paid $10.18 per hour. Find her gross earnings for the week.
Answer:
⚠️DO NOT RELY ON ME⚠️ But, just by doing It in my head i think it's 236.685, but I don't really know just my thought process and mental math
OMGG PLEASE HELP! GIVING BRANILEST!! I need ASAP!! THIS DUE IN LIKE 2 MINUTES
Answer:
28.33
(Ignore these words)