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
Alex787 [66]
2 years ago
10

Plz answer this right way

Mathematics
1 answer:
zlopas [31]2 years ago
3 0

Answer:

It will take 3 seconds.

Step-by-step explanation:

All we have to do is plug in the values we have to the equation the question gave us.

We know that the initial velocity or v = 48, and that the height we are trying to reach is =, so h = 0. We are solving for t

h = -16t^2 + vt

0 = -16t^2+48t

We can factor out -16t on the right side of the equation

0 = -16t(t-3)

Then using the zero product property, we can say that either -16t is equal to 0 in which case t is equal to 0 or t-3 = 0, in which case t = 3. We know that the ball had to leave the ground, so it couldn't have taken no time at all to come back onto the ground. Therefore, we know that the other solution is correct.

You might be interested in
Two smoothies and an ice cream cone cost $7.50. Three smoothies and two ice cream cones cost $12. Calculate the cost of a smooth
anygoal [31]

Answer:

Smoothie = 3

Ice cream = 1.5

Step-by-step explanation:

2s + i = 7.5

3s + 2i = 12

subtract the equations

(3s + 2i) - (2s + i) = s + i

s + i = 4.5

2s + i = 7.5,  so s must equal 3 (7.5 - 4.5)

If s = 3, then i is 1.5 (4.5 - 3.5)

To check, plug 3 and 1.5 into s and i.

2(3) + 1.5 = 7.5

6 + 1.5 = 7.5

7.5 = 7.5

3(3) + 2(1.5) = 12

9 + 3 = 12

12 = 12

5 0
3 years ago
Pls help me with this
erastova [34]
The mean number is -48(:
7 0
3 years ago
a parallelogram has a base of 3 feet and a height of 5 feet. The base and height will each be doubled. Will the area also be dou
navik [9.2K]

Answer:

No, doubling the base and height would actually quadruple the area,

Step-by-step explanation:

With the original measurements of b = 3 ft and h = 5 ft,

<em>b x h = A</em>

<em>(3) x (5) = </em><em>15 ft</em>

So lets say we <em>doubled</em> the factors:

<em>(2)(3) x (2)(5) = A</em>

We would end up with 60 feet, four times that of 15.

<em>(6) x (10) = </em><em>60 ft</em>

3 0
3 years ago
13. Diberi v = u + at, cari nilai t apabila v = v = 42 u=-8 dana - 5. <br>A.10<br>B.8<br>C.6<br>D.4​
LiRa [457]

Answer:

Lol mcm soalan kamu salah. Pilih A je

Step-by-step explanation:

  • v = 42
  • u = -8
  • a = -5

<u>Masukkan </u><u>nilai </u><u>ters</u><u>e</u><u>b</u><u>ut </u><u>dalam</u><u> </u><u>persamaan</u><u> </u><u>v</u><u> </u><u>=</u><u> </u><u>u </u><u>+</u><u> </u><u>at,</u>

42 = -8 + (-5)t

50 = -5t

t = -10

3 0
2 years ago
The outside of a picture frame measures 14 in and 20 in 196in^2 of the picture shows find the thickness of the frame
LuckyWell [14K]
The described picture frame can be visualized into two separate parts. The first area is equal to the area using the outermost dimensions for the length and width. 
             Area = Length x Height
              Area = (20 in) x (14 in) 
              Area = 280 in²

We are given that the area is only equal to 192 in². We subtract this value from the computed area.
         Difference = 280 in² - 192 in²
               difference = 88 in²

This area is equal to the area of the hollow space inside the frame. That is equal to,
      height = 20 in - 2x
      length = 14 in - 2x

The area,
               88 = (20 - 2x)(14 - 2x)

Simplify the right hand side of the equation.
             88 = 280 - 68x + 4x²

Divide the equation by 4,
            22 = 70 - 17x + x²

Transposing,
                x² - 17x - 48 = 0
The factors of the equation is 58.2. 

Thus, the thickenss is equal to 58.2 in
5 0
3 years ago
Other questions:
  • Jim's backyard is a rectangle that is 15 5/6 yards long and 10 2/5 yards wide. Jim buys sod in pieces that are 1 1/3 yards long
    11·2 answers
  • After 5 years, a $2,450 investment is worth $3,123.75 What is the simple annual interest rate for this investment?
    11·2 answers
  • NEED HELP LIKE NOW PLSSS HELP 50 POINTS Type the correct answer in the box. Use numerals instead of words. If necessary, use / f
    8·1 answer
  • Simplify by adding like terms 5w+4wx+3+wx+3w+3+6w<br> please show work?
    15·2 answers
  • Write an equation for each translation of y=|x|. 2.5 units left y = | x | – 2.5
    13·2 answers
  • Jim sold 396 tickets for the school play. Student tickets cost $3 and adult tickets cost $4. Jim's sales totaled $1385. How many
    12·1 answer
  • What is the length of BD?
    5·2 answers
  • The answer of this  3*(-7) is  -21
    10·1 answer
  • ben has 165 pictures he puts 6 pictures on each page of a photo album. how many pages of the album did ben fill? how many pages
    5·2 answers
  • Describe the data from the dot plot.<br>​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!