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
Kisachek [45]
3 years ago
14

Can someone help me on how to do this i have a whole worksheet of this and i have no clue what to do

Mathematics
1 answer:
ss7ja [257]3 years ago
4 0

Answer:

a & b.    in 1 sec the object reaches a maximum height of 16 feet

c.      2 sec. the object will hit the ground

Step-by-step explanation:

h = -16t^{2} +32t.

When graphed, you would get a parabola that opens down.  The vertex is the key to the problem.  The vertex (t, h) will give you the maximum height and the time to reach that height.

So,  t = -b/2a = -32/-16(2) = 1

      h(1) = -16(1^{2}) + 32(1) = -16 + 32 = 16

Therefore, the vertex is (1, 16)

So, in 1 sec the object reaches a maximum height of 16 feet

let h = 0 for when the object hits the ground

-16t^{2} +32t = 0

-16t(t - 2) = 0

t = 0  or t = 2

After 2 sec. the object will hit the ground

You might be interested in
A manufacturer of computer printers purchases plastic ink cartridges from a vendor. When a large shipment is received, a random
g100num [7]

Answer:

97.4% probability

Step-by-step explanation:

Since there is only two possible outcome of inspecting the catridge : either defective or not, we can solve the problem using the binomial probability distribution (approximated to normal).

To approximate the binomial probability to normal, we find the expected value and the standard deviation of the probability of exactly x sucesses on n repeated trials with p probability

Expected values E(X) = np

Standard deviation √V(X) = √np(1-p)

using the z-score formula (X - μ)/σ, we can solve normally distributed problem.

Where μ is the mean and σ is the standard deviation. The Z-score is is the measure of how much a sample is from the mean. The p-value associated with this z-score which is the probability that the value of the measure is smaller than X can be checked on the z-score table.

FOR THIS QUESTION,

a random sample of 200 cartridges is selected

n = 200

Therefore If there are more than 0.02 × 200 = 4 defective, the sample will be returned.

To determine the approximate probability that a shipment will be returned if the true proportion of defective cartridges in the shipment is 0.05

μ = E(X)

= 0.05 × 200 = 10

σ = √V(X) = √np(1-p)

= √200 × 0.05 × 0.95

= 3.08

This probability is 1 subtracted by the pvalue of Z when X =4

Z = (X - μ)/σ

Z= (4 - 10)/3.08

Z = -1.95

Z = -1.95 has a P-value of 0.026 (on the z-score table)

This means that there is a 1 - 0.026 = 0.974

= 97.4% probability that a shipment will be returned if the true proportion of defective cartridges in the shipment is 0.05.

6 0
3 years ago
What is the missing blank?
bekas [8.4K]

Answer:

<1 and <8 are alternate exterior angles

Step-by-step explanation:

Alternate means on the opposite side of the transversal

Exterior means outside the parallel lines

<1 and <8 are alternate exterior angles

4 0
3 years ago
Paige made $1411.75 last year by investing a total of $15,250 in two accounts: one paying 8.5% annual interest and the other pay
Umnica [9.8K]
Lets x and y are 2 accounts Paige invested
x account invested with annual interest rate 8.5%
y account invested with annual interest rate 10%

x + y =<span>15,250 so x = 15,250 - y
0.085x + 0.1y = </span><span>1,411.75

substitute </span>x = 15,250 - y into 0.085x + 0.1y = 1,411.75

0.085x + 0.1y = 1411.75
0.085(15,250 - y) + 0.1y = 1,411.75
1,296.25 - 0.085y + 0.1y = 1,411.75
0.015y = 115.5
y = 7,700

x = 15,250 - y
x = x = 15,250 - 7,700
x = 7,550

answer

$7,550 invested on account with annual interest rate 8.5%
$7,700 invested on account with annual interest rate 10%
8 0
3 years ago
a researcher finds 200 women over 50 who exercise regularly, pairs each with a woman who has a similar medical history but does
Shtirlitz [24]

A researcher finds 200 women over 50 who exercise regularly, pairs each with a woman who has a similar medical history but does not exercise, then follows the subjects for 10 years to see which group develops more cancer. this is a prospective study.

<h3>Define prospective study.</h3>

Individuals are tracked over time in prospective studies, and information is gathered about them as their characteristics or circumstances change. Prospective studies include things like birth cohort studies. In retrospective research, people are sampled, and details about their past are gathered. Always after a predetermined number of incidents, the analysis takes place. The fact that individuals were enrolled and baseline data was obtained before any subjects experienced an outcome of interest identifies a study as prospective.

Given,

A researcher finds 200 women over 50 who exercise regularly, pairs each with a woman who has a similar medical history but does not exercise, then follows the subjects for 10 years to see which group develops more cancer. this is a ...

Prospective study

To learn more about prospective study, visit:

brainly.com/question/28565073

#SPJ4

3 0
1 year ago
Heeeeeeeeeeeelpppppppp
KonstantinChe [14]

Answer:

$59.85

is your answer

8 0
3 years ago
Read 2 more answers
Other questions:
  • Expand and simplify (x-3)(x-6)
    6·1 answer
  • Sue took a taxi from her home to her friends house. It cost $3.58 per mile and she gave the driver a $5 tip. If she paid $87.34,
    7·1 answer
  • Help on math? Thanks
    15·1 answer
  • I need help! Answer as fast as you can. Marking brainlyiest
    5·1 answer
  • WILL GIVE BRAINLIEST!!!!
    14·1 answer
  • A small aircraft, a, is cruising at an altitude of 1.5 km. The radius of Earth is approximately 6400 km. How far is the plane fr
    6·1 answer
  • What is the vertical shift for the absolute value function <br> F(x)=9[x+1]+2
    5·1 answer
  • Help me find the scale factor please!!
    14·2 answers
  • Write in standard form. (Use Desmos)* 9.76x10 with a 5 on top of the ten​
    10·1 answer
  • Randall wants to buy a pizza. He can select from 5 different sizes, 4 types of crust, and 12 toppings for his pizza. Which of th
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!