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
exis [7]
2 years ago
10

Guided Practice

Mathematics
1 answer:
Marina86 [1]2 years ago
3 0

Answer:

t = -0.22secs and 0.85secs

Step-by-step explanation:

Given the expression

h = –16t² + vt + c.

If a child tosses a ball upward with a starting velocity of 10 ft/s from a height of 3 ft, then;

v = 10, c = 3

Since we are to let h = 0, then the equation becomes:

0 = –16t² + 10t + 3

Multiply through by a minus sign

16t² - 10t - 3 = 0

Factorize the reulting expression:

t = -(-10)±√(-10)²-4(16)(-3)/2(16)

t = 10±√100+192/32

t = 10±√292/32

t = 10±17.09/32

t = 10-17.09/32 and 10+17.09/32

t = -7.09/32 and 27.09/32

t = -0.22secs and 0.85secs

You might be interested in
Kareem said that four fifths of his age is 16years how old is Kareem?
VikaD [51]

Answer:

12.8 so about 13

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
PllllllllIIILP:P{:LPs help
borishaifa [10]
Uhhhhh the picture is all white
5 0
3 years ago
Read 2 more answers
3/4x+7/8=4 1/4 please help me
Orlov [11]

Answer:

4 1/2

Step-by-step explanation:

4 0
1 year ago
29. The table below represents the relationship of the price of carrots to their weight in ounces in a market: Price Weight, in
Alinara [238K]

The proportional relationship that represents the market that sells their carrots at a lower rate per pound is: y = 1.6x.

<h3>What is a proportional relationship?</h3>

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

From the table, the rate is:

k = $8.8/4.4 = 2.

From the market, the rate is:

k = $4.8/3 = $1.6.

Hence the equation is y = 1.6x.

More can be learned about proportional relationships at brainly.com/question/10424180

#SPJ1

3 0
1 year ago
David bought 3 dvds and 4 books for $40 at a yard sale. Anna bought 1 dvd and 6 books for $18. How much did each dvd and book co
Ber [7]

Answer:

A book is worth $1 and a DVD is worth $12.

Step-by-step explanation:

The equations (2 unknowns and two equations, d is for a DVD and b is for a book):

For David: 3d+4b=40

For Anna: d+6b=18

Now multiply the second equation with -3 and add to the first equation:

3d+4b=40

−3d−18b=−54

Combined equation: −14b=−14 and b=1 (means that each book is worth $1).

 

Now for DVD price, use the second equation:

d=18−6 or d=12 (means that each DVD  is worth $12).

A book is worth $1 and a DVD is worth $12.

8 0
3 years ago
Other questions:
  • Please need help quick with a correct answer please
    9·1 answer
  • Patricia earns $8 per hour plus 5% commission on everything she sells. Last week she worked 35 hours and sold $10,000 worth of m
    9·2 answers
  • 18) y-(4- x - y + 2); use x = 3, and y = 2
    6·2 answers
  • Which expressions are equivalent to 64 Superscript 1? Check all that apply.
    7·2 answers
  • How much money do you need to deposit monthly into a college fund for
    5·1 answer
  • Factor completely 2x^3 + 6x^2 + 10x + 30
    10·1 answer
  • An item has listed price of $65 if the sales tax rate is 7% how much is the sales tax in dollars
    15·2 answers
  • What is the weight, in Newtons, of a person on Earth whose mass is 90 kilograms? Gravity near the Earth's surface is 9.8 m/s2.
    8·1 answer
  • 5 (- 9) + 12, t = 20
    8·1 answer
  • Describe the relationship between the 6
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!