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
alisha [4.7K]
3 years ago
6

An object is launched straight up into

Mathematics
1 answer:
DiKsa [7]3 years ago
8 0

Answer:

  t ∈ {1, 3}

Step-by-step explanation:

You want to find t such that ...

  h = 27

  27 = -8t^2 +32t +3 . . . . . . substitute the expression for h

  24 = -8t^2 +32t . . . . . . . . . subtract 3

  -3 = t^2 -4t . . . . . . . . . . . . . divide by -8

  1 = t^2 -4t +4 = (t -2)^2 . . . . add 4 to complete the square

  ±√1 = t -2 . . . . . . . . . . . . . . take the square root

  t = 2 ± 1 . . . . . . . . . . . . . . . . add 2

  t = 1 or 3

The object is 27 ft off the ground at t = 1 and again at t = 3.

You might be interested in
Bonita deposited $1300 into a bank account that earned 5.75% simple interest each year. She earned $299 in interest before closi
nika2105 [10]

Bonita deposited $1300 into a bank account that earned 5.75% simple interest each year.

She earned $299 in interest before closing the account.

Principle =  $1300

Rate =  5.75%

Simple interest =  $299

Put all the value in the formulaTime = 4 years

Therefore

 4 years was the money in the account .

8 0
3 years ago
Read 2 more answers
3x/3=? I WILL MARK U BRAINLIST!!!!!
insens350 [35]

Answer:

3 x 3 =9

Step-by-step explanation:

9

4 0
3 years ago
Read 2 more answers
6)a garden was square, but last year she made it makes or shortening one side 5 meters and the other 8 meters. If the area of th
Alekssandra [29.7K]

Answer:

let dimention of original garden be x

then (x-8)(x-5) = 180

x^2 -13x -140 = 0

(x-20)(x+7)=0

x= 20 or x = -7

x = 20

original area = (20)^2

= 400 m^2

5 0
2 years ago
< The map below is being reduced by a scale factor of 2/3 and printed at
Orlov [11]

Answer:

Step-by-step explanation:

B

3 0
3 years ago
The local fitness center offers membership discounts for hospital employees. According to the membership brochure, you will rece
Liono4ka [1.6K]

Answer:

48.75$

Step-by-step explanation:

Since the original price is 65$ and you are getting 25% off, you would now be paying 75% of the original price.

65*75%=48.75

_______________________________________________________

You could also take the amount of discount you're getting...

65*25%

and then subtract the amount of discount your getting from the original price

65-(65*25%) = 48.75

7 0
2 years ago
Other questions:
  • **70 POINTS** NO GUESSING
    10·2 answers
  • How do you factor out 4v(squared) - 16v + 7?
    10·1 answer
  • The Rodriquez family drove 115 miles on 5 gallons of gasoline. Which equation can be used to find how far they can travel on a f
    13·2 answers
  • write a rule to represent the relationship between the number of typed words and the time in which they are typed​
    9·1 answer
  • how much would 600 invested at 8% interest compounded continuously be worth after 3 years? round your answer to the nearest cent
    6·1 answer
  • An electrical engineer has on hand two boxes of resistors, with five resistors in each box. The resistors in the first box are l
    15·1 answer
  • What is a good minesweeper win percentage?
    10·1 answer
  • Plz help me with question 1 and3
    13·2 answers
  • Write the ratio in simplest form in both fractions and in decimal form.
    14·2 answers
  • Show that there do not exist scalar c1 c2 and c3 c1(-2,9,6)+c2(-3,2,1)+c3(1,7,5)= (0,5,4)​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!