Answer:
The time of fall is 9 seconds
Step-by-step explanation:
We are asked to find the time between when the penny was dropped and when it landed.
To do this, we have to start with what we are given and see how we can relate it to find what we are looking for.
From the problem, we are given the equation which represents the height which the penny travels as it falls. It is given by
[tex]h(t) = 16t^2 - 144.[/tex] ----------- equation 1
in addition to that, we are also given that h = 144ft at the end of the fall; that is, where t = t max, and h = hmax
Hence, it is safe to say that at the end of the fall, that the heigh is no more changing. This means that dh/dt = 0
We can now differentiate equation 1 above to get
h max = 16t - 0 ------------- equation 2
recall that h max = 144
plugging the value of h max into equation 2, we have
144 = 16t
t = 9 seconds
Therefore the time of fall is 9 seconds
Answer:
t= 3 seconds
Step-by-step explanation:
I took the quiz and this is the answer
Marget works at a bakery. She is paid 300 every week
Answer:
B
Step-by-step explanation:
12x + 300 = 450
hope this helps
What is the surface area?
Someone please help
Answer:
134 square inches
Step-by-step explanation:
To find surface area, you must find the individual area of each face of the shape. There are 6 faces on every cube or other rectangular prism, so you must perform 3 equations, as every face has an identical face on the opposite side. The formula for regular area is Length (l) times Width (w).
Large sides on front and back: 8x6=48
Slim sides to the right and left: 1x6=6
Slim sides on top and bottom: 8x1=8
Then combine:
48+48+6+6+8+8=134
A model train is inches long. Each car in this train is inches in length. How many cars are in the train?
Answer:
5
Step-by-step explanation:
answer pleaseeee!!! question below
If you spin the spinner 12 times, what is the best prediction possible for the number of times it will land on pink?
Michael returned a bag of cans and received $4.65 back. If the deposit for each can was $0.05, how many cans did he return? (answer pls
Answer:
The Answer is 93 Cans
Step-by-step explanation:
4.65 divided by 0.05 is 93
Brainliest? :3
Write the expression of the quotient of 44 and 11
please help , thank you!
Answer:
1/1
Step-by-step explanation:
x1 subtracted by x2
in this case 3-2=1
Then y1 subtracted by y2
5-4=1
y will be put over x in fraction form
Answer:1/1
Answer:
mark her as brainliest
Step-by-step explanation:
Select all expressions that are equivalent to -4(x + 2) – 2x + 4.
a.
-6x – 4
b. 4x + 2 – 2x + 4
C.
- 10x
d. -4x + -8 - 2x + 4
e. -4X – 2x - 8 + 4
Answer:
A,D,E
Step-by-step explanation:
-4(x + 2) – 2x + 4
=-4x-8-2x+4 D
=4x-2x-8+4 E
=-6x-4 A
Hope it helps!
A four day camping trip costs 800$. The camper rental fee was 340$. Also included were four camper tickets. How much was each ticket?
Answer:
$115 each
Step-by-step explanation:
(800 - 340)/4 = 115
A bakery bakes 73 batches of 18 cupcakes each week. How many individual cupcakes do they make each week?
Answer:
[tex]1314\ cupcakes[/tex]
Step-by-step explanation:
This question asks one to find the number of cupcakes baked each week, in other words, multiply the number of batches baked by the number of cupcakes in each batch to find the number of individual cupcakes baked.
[tex](batches)*(cupcakes)\\\\= (73)*(18)\\\\= 1314[/tex]
Mount Ojos del salado is the highest mountain in Chile, with a peak at about 6900 meters above sea level. The Atacama Trench, just off the coast of Chile, is about 8100 meters below sea level (at its lowest point). what is the difference in elevations between mount ojos del salado and the atacama trench?
Answer: 15,000 meters
Step-by-step explanation:
When measuring the difference in elevations between a body that is above sea level and one that is below, you simply take the distances of the bodies above and below sea level and add it up.
From sea level to Mount Ojos is 6,900 meters. Atacama trench is 8,100 meters below. From the peak of Mount Ojos to sea level is 6,900 meters. Then add the distance from sea level to Atacama to find the difference in elevations.
= 6,900 + 8,100
= 15,000 meters
Answer:
15,000 Meters
Step-by-step explanation:
Tennis balls are packaged in a silo-shaped container with a height of 23.5 cm and a radius of 2.9 cm. Find the surface area of the container.
Answer:
481.04 cm²
Step-by-step explanation:
A silo shaped container is shaped like a cylinder
The formula to solve for the Surface Area of a Cylinder =2πrh+2πr²
Radius = 2.9 cm
Height = 23.5 cm
=2×π×2.9 × 23.5 + 2×π×2.9²
= 481.04067 cm²
Approximately = 481.04 cm²
The surface area of the container is 481.04 cm²
solving logarithm equations
Sally is baking cupcakes for her birthday party.
The table below shows the total number of
sprinkles Sally uses for the number of cupcakes
she bakes.
Answer:
Where's the rest of the question?
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Step-by-step explanation:
I believe the answer is C
3. (a) Find the student's total displacement for the entire trip.
(b) What was his total time for the entire trip?
(c) What was his average velocity for the entire trip?
4. (a) What was the student's total distance (the length of his path) for the entire trip?
Plz help
Answers:
1, It took him 21 minutes to reach the end.
2, He biked 8 kph/mph
3, He went 2.9 km/ 1.8 mi.
ur welcome
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░░░▌░▄▄▄▐▌▀▀▀░░ This is Bob
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▀█▌░░░▄░▀█▀░▀ ░░ Copy and paste him so he can take over brainly.
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Which of the statements about the graph is true? :((
Answer: D / none are true
Since it's proportional (it's a straight line), B and C are automatically wrong. A would seem true at first glance, BUT if you look closely at the graph, the slope of the graph is actually 2x.
Look at the beginning of the line. It starts at 18 (x = 0/y intercept) and at x = 1, you can see that y is at 16. The y value goes down by 2 every time x increases by 1. This means that the equation of the graph is -2x + 18 = y.
The graph is proportional and has an equation of y = -2x + 18. This means that A, B and C are incorrect.
Answer:
Your answer is D.Step-by-step explanation:
It is a straight line also known as proportional. The first impression, A appears to be accurate, but closer inspection reveals that the graph's slope is actually 2x. 18 (x = 0/y intercept) and ends at x = 1, where little y is at 16. Any time x expands by one, the y value falls by two. This says that the graph's equation is -2x + 18 = y.
how many ounces are equal to 1 1/2 pounds
Courtney walked 4 miles on Tuesday. How many total feet would that be?
Answer: 21,120 feet
Step-by-step explanation:
5280(4)=21120
Answer:
21120 ft
Step-by-step explanation:
1 Mile = 5280 Feet
5280*4=21120
(Will give brainliest)A reflection is applied to triangle ABC according to the rule
(x, y) — (x, -y). Which point will be the top vertex of the
image?
Select one:
(3, 4)
(1,-2)
(-3,-4)
(-1,2)
Answer:
(-1, 2) will be point A'
Step-by-step explanation:
Choose the symbol that correctly compares the fractions below.
8/9 ? 1/9
Answer:
Which means that this equation is also true: 8/9 > 1/9
Step-by-step explanation:
Is 8/9 less than 1/9? Is 8/9 smaller than 1/9? These are the same questions with one answer.
To get the answer, we first convert each fraction into decimal numbers. We do this by dividing the numerator by the denominator for each fraction as illustrated below:
8/9 = 0.889
1/9 = 0.111
Then, we compare the two decimal numbers to get the answer.
0.889 is not less than 0.111.
Therefore, 8/9 is not less than 1/9 and the answer to the question "Is 8/9 less than 1/9?" is no.
Please help, Im confused with linear graphing
Answer:
C.
Step-by-step explanation:
I learned this years ago, but I think it's answer C. Because the others (curved lines) would be classified as Non-linear.
*(( I sincerely apologise if this turns out to be the wrong answer. Lol))
Answer:
C
Step-by-step explanation:
When you see the word "linear," think "line." Only one of the four given graphs is a straight line: C
A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is spun several times, and the results are recorded below:
Spinner Results
Color Frequency
Red 2
Blue 10
Green 3
Yellow 19
Purple 20
Based on these results, express the probability that the next spin will land on blue as a decimal to the nearest hundredth.
Answer:
10/54 = 0.185
Javier estimates the square root of 18 in the following way: √18=2√9=2*3=6 Explain why her reasoning is incorrect. Without using a calculator, the square root of 18 will be between what two values (remember to look for perfect squares/perfect square roots)? Show your reasoning. You do not need to find the decimal equivalent of the root.
Answer:
Javier estimates the square root of 18 in the following way: √18=2√9=2*3=6 Explain why her reasoning is incorrect. Without using a calculator, the square root of 18 will be between what two values (remember to look for perfect squares/perfect square roots)? Show your reasoning. You do not need to find the decimal equivalent of the root.
Answer:
Solution given:
√18√[9×2]3√2 is a perfect square of √18.not 6.Please I need pass I can’t fail
Answer:
b
Step-by-step explanation:
the y-intercept is 41 so and the year 1945 is x=0
There are 70,000 bacteria present in a culture. An antibiotic is introduced to the culture and the number of bacteria is reduced by half every 4 hours.
Answer:
The question is an incomplete question
There are 11 kites in the sky, and 6 of those kites are striped. What fraction of
the kites are striped?
Answer:
no
Step-by-step explanation: yes
Please help, not hard Im just confused
Answer:
1
Step-by-step explanation:
The perimeters of two squares in the model are given. Find the perimeter of the third square. P=12 units p=16 units
Answer:
20 units
Step-by-step explanation:
1) find the side of the first square
side = P / 4 = 12:4 = 3 units
2) find the side of the second square
side = P / 4 = 16 : 4 = 4 units
3) use the Pythagorean theorem to find the hypotenuse of the right triangle
[tex]\sqrt{4^2 + 3^2} = \sqrt{16 + 9} = \sqrt{25} = 5[/tex] units
4) find the perimeter of the third square
P = side x 4 = 5 x 4 = 20 units
Answer:
20 units
Step-by-step explanation:
