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
Leto [7]
3 years ago
8

A trebuchet launches a projectile from a hilltop 30 feet above ground level on a parabolic arc at a velocity of 40 feet per seco

nd. The equation h=−16t2+40t+30
models the projectile's h height at t seconds. How long will it take for the projectile to hit its target on the ground (to the nearest tenth of a second)?


2.8 seconds


3.1 seconds


3.5 seconds


3.9 seconds
Mathematics
1 answer:
LenKa [72]3 years ago
7 0
3.5 seconds!



hope this helps you out, and i’m sorry if i’m wrong!
You might be interested in
3a) There were 25 red markers, 32 blue markers, and 38 green markers in a tub. Explain how you would construct a bar graph for t
Tema [17]

Answer:

Step-by-step explanation:

you would show x and y lines and title frequency to side and colours to bottom

0-40 on the y axis title is frequency

and on bottom graph put the colours. red blue and green always using equal intervals for names or time or colours along the x axis.  

5 0
3 years ago
Read 2 more answers
Plz guys help i need asap<br> its part b im stuck
aleksklad [387]

Answer:

a.2nd quarter with 9 goals

b. 4.8 goals

c. 4 goals

Step-by-step explanation:

a. The mode is defined as the most appearing data point or the data point with the highest frequency..

From our data(for away goals):

  • 1st quarter-2
  • 2nd quarter-9
  • 3rd quarter-7
  • 4th quarter-4

Hence, the 2nd quarter has the mode for away goals with 9 goals.

b. Mean is defined as the average of a set of data points.

#We calculate the totals goals per quarter, sum over all quarters then divide by the number of games, 10:

\bar x=\frac{1}{n}\sum{x_i}\\1^{st }_g=Away+Home=5+2=7\\\\2^{nd}_g=Away+Home=4+9=13\\\\3^{rd}_g=Away+Home=8+7=15\\\\4^{th}_g=Away+Home=9+4=13\\\\\bar x=\frac{1}{n}\sum{x_i}=\frac{1}{10}(7+13+15+13)=4.8

Hence, the mean number of goals per quarter is 4.8 goals

c. To find the number of more home goals than away goals, we subtract from their summations as:

g_m=\sum{g_h}-\sum{g_a}\\\\=(5+4+8+9)-(2+9+7+4)\\\\=26-22\\\\=4

Hence, there are 4 more home goals than away goals.

4 0
3 years ago
What are the following expressions that are equivalent to 0.25.
wlad13 [49]

Answer:

Step-by-step explanation:

0.25=25/100=1/4

4 0
3 years ago
need help with this problem drop down1: 6, 10drop down2: 6, 10drop down3: less than (&lt;), greater than (&gt;), less than or eq
Kryger [21]

From the information given,

x represents number of small boxes while y represents number of large boxes.

If each small box can hold 6 books and each large box can hold 10 books, it means that the expression for the number of books that x small boxes and y large boxes can hold is

6x + 10y

If James can pack up to 110 books, it means that the number of books that he can pack is less than or equal to 110. The inequality representing this scenario is

6x + 10y ≤ 110

10y ≤ - 6x + 110

Dividing both sides of the equation by 10, we have

y ≤ - 6x/10 + 110/10

y ≤ - 3x/5 + 11

The graph is shown below

The inequality that represents this sitaution is 6x + 10y ≤ 110

The graph of the inequality wil have solid boundary at y = - 3x/5 + 11

and will be shaded below the line.

3 0
1 year ago
Pleasee help me I just wanna go to sleep already :c
Lunna [17]

Answer: 17 is A and 18 is B

Used a calculator to add them all up! Get some sleep hope this helps.

17) 2(3x8)+2(3x6)+2(6x8) = 180

18) 4(9x2)+2(9x9) = 234

8 0
3 years ago
Other questions:
  • Jenny is going to paint the wall in her bedroom her while measures 25 feet long by 15 feet wide she plans to buy enough paint to
    7·1 answer
  • Plz Help and Thank you :/
    8·1 answer
  • Negative square root of nine is it a rational or irrational number
    10·2 answers
  • 5<br> 2<br> 12<br> 3<br> 21<br> 35<br> 5<br> 59<br> Is it quadratic ?
    13·1 answer
  • You wish to purchase a new car and can afford monthly repayments of up to $250 per month. You see a car you like for $12,000 and
    15·1 answer
  • A theater is selling movie tickets. The first night, 19 Senior tickets and 57 Adult tickets were sold. The second night, 20 Seni
    12·1 answer
  • If I had 4 eggs
    13·2 answers
  • . You have a coupon for 30% off. If your subtotal is $65, what is the price of your final bill once the discount is applied?
    15·1 answer
  • Plz help me with this. It is a test
    9·2 answers
  • Please help 14 points
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!