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
stiks02 [169]
3 years ago
8

PLEASE HELP!! iTS ALGEBRA

Mathematics
1 answer:
Lunna [17]3 years ago
7 0

Answer: The closest time is 0.954 seconds

Step-by-step explanation:

The height of the Frisbee from the ground is given by

s(t) = -16t^2 +12t + 15

t is the time in seconds. If we input a value for t, we would get the distance of the Frisbee above the ground in feets at that given time.

We want to determine the time at which the Frisbee would be 10 feets above the ground. The equation becomes

10 = -16t^2 +12t + 15

-16t^2 +12t + 15 - 10 = 0

-16t^2 +12t + 5 = 0

We will solve for x using the general formula for quadratic equations

x = [-b+-√b^2 - 4ac]/2a

a = -16

b = 12

c = 5

x = [-12+-√12^2 -( 4 × -16 × 5)]/2 × 5

x = [-12+-√144 + 320]/10

x = [-12+-√464]/10

x =[ -12+21.54]/10 or x =[ -12- 21.54]/10

x = 9.54/10 or x = -33.54/10

x = 0.954 or x = -3.354

Since t is greater than or equal to 0 as stated, the time will be

0.954 seconds

You might be interested in
A real estate agent has 8 master keys to open several new homes. Only 1 master key will open any given house. If 40% of these ho
riadik2000 [5.3K]

Answer:

Step-by-step explanation:

Suppose F represents the value that a room is unlocked.

Then, we can assume that the probability of unlocked homes is:

P(unlocked homes) = P(U)

P(unlocked homes) = 40%

P(unlocked homes) = 0.40

Also, let us represent the value of the locked room with G.

P(locked homes) = P(G)

P(locked homes) = (1 - 0.40)

P(locked homes) = 0.60

Let the probability of selecting a correct key be P(S)

It implies that for the agent to use 3 keys, we have a combination of ^8C_3 possible ways for the set of keys.

Now; since only one will open the house, then:

P(select correct key) = P(S)

P(S) = \dfrac{ (^1_1) (^7_2)   }{   ^8_3 }

P(S) = \dfrac{21}{56}

P(S) = 0.375

Finally, for the real estate agent to have access to specific homes supposing the agent select three master keys at random prior to the time he left his office, Then:

P(F ∪ (G∩S) = P(F) + P(G∩S)

P(F ∪ (G∩S) = P(F) + P(G) × P(S)

P(F ∪ (G∩S) = 0.40 + (0.60×0.375)

P(F ∪ (G∩S) = 0.40 + 0.225

P(F ∪ (G∩S) =0.625

5 0
2 years ago
The amount of money earned by bank customers based on the amount of principal in their savings account is _______________.
dimaraw [331]

Answer:

interest

Step-by-step explanation:

8 0
3 years ago
[Help asap, will mark brainliest] Refer to the diagram shown to classify the relationship between each angle pair.
Anastasy [175]

Answer:

a) corresponding

b) alternate interior

c) alternate exterior

d) supplementary

e) vertical

Step-by-step explanation:

I hope this helps :)

8 0
3 years ago
Read 2 more answers
How can I solve 4x-2>3x+5
cluponka [151]
You would move over the -2 making the equation look like this 4x>3x+7. Then move the 3x to the other side of the equation making it look like this 1x>7. Thus the answer is x>7.
7 0
3 years ago
A logical argument that is presented in graphical form using boxes and arrows is called a____.
aliya0001 [1]

Answer:flowchart proof

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • HELP Eva works different hours each week. These figures show her net pay for the last 6 weeks.
    11·1 answer
  • The sum of the digits of a 5-digit-priced car totals 15. You know that no digit repeats and that the fourth digit of the car is
    10·1 answer
  • Captain amazing needs your help!!He has been given a secret 4 acre lot by the government to train his mighty minions.he wants to
    5·2 answers
  • Marianne chose an integer. She subtracted 7 then multiplied the difference by -5. The product was 60. What integer did she chose
    7·1 answer
  • What is the constant in the expression?
    13·2 answers
  • A shop has a 3 for 2 offer on chocolate bars The normal price of a chocolate bar is 72p Sian gets 3 chocolate bars from the shop
    11·1 answer
  • Select ALL the correct answers.
    7·2 answers
  • 15 decreased by the product of a number x and 4 is 8
    14·1 answer
  • What unit of measurement would you use to measure the length of your foot?
    5·1 answer
  • I hope this I better than the blurry photo I took '-'​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!