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
Oliga [24]
3 years ago
9

A ball is thrown upwards and it’s height h m,at time t s,is given by h=7t-4.9t2.How long does the ball spend more than 1.5m abov

e ground?
Mathematics
1 answer:
Allushta [10]3 years ago
4 0

Answer:  From what you wrote the I think the ball is drop

At time 0 you are 7 meters above ground

You basically just need to solve for

1.5 =7t-4.9t^2

by rearrange the equation you get

4.9t^2-7t+1.5=0

by using Quadratic Formula

t=1.166s

You might be interested in
What is the product of 1 1/2 and −1 1/4 ? Enter your answer as a mixed number, in simplified form, in the box.
ioda
11/2 * -11/4  = (11*-11) / 2*4  =   -121 / 8

= -15 1/8 answer

-2 1/4 * -4 1/2
= -9/4 *  -9/2
=  81/8
= 10 1/8  answer
4 0
3 years ago
Read 2 more answers
An hour before show​ time, only 266 people are seated for a movie. . According to ticket​ sales, 93​% of the people have yet to
Mandarinka [93]

Answer:

3800 tickets

Step-by-step explanation:

we are given that,

total people seated:266

yet to come:93%

so the percentage of people who have arrived is 100%-93%=7%

and one ticket for each people

therefore,

\displaystyle \begin{array}{ccc} \displaystyle \rm7\%   \quad \text{People} \implies266 \:  \text{tickets} \\  \displaystyle100 \%\:   \quad \imath \imath \implies   \frac{266}{7\%}   \:  \:  \:  \: \imath  \imath \\ \\   \qquad  \displaystyle    \qquad\rm as  \: \% =    \frac{1}{100} \longleftarrow \frac{266}{ \dfrac{7}{100} }     \\   \\  \displaystyle   \rm  \: by \: simplifying \: complex \: fraction\longleftarrow 266  \times  \frac{100}{7}   \\  \rm reduce \: fraction \longleftarrow 38 \times 100  \\  \rm simplify \:multiplication  \longleftarrow3800\end{array}

hence,

<u>3</u><u>8</u><u>0</u><u>0</u> tickets were sold for the movie

4 0
3 years ago
Read 2 more answers
During a school lunch, the cafeteria sold two-fifths as many white milks as chocolate milks. If there were 35 milks sold, how ma
anyanavicka [17]
Hello!

As we can see, they sell 2/5 as many white milks and chocolate milks. We can write this as the ratio 2:5. As you can see, we are given the total, which is 35. The total of the ratio in simplest form is 7 (2+5). As you can see, we have to multiply by 5 to get that 7 to 35. Therefore we multiply each part of the ratio by 5 to get our final answer. We can have w represent the white milks while c represents the chocolate milks.

\frac{w}{c} =  \frac{2}{5}·\frac{5}{5}=\frac{10}{25}

Therefore there were 25 chocolate milks sold (just to verify 10 is 2/5 of 25).

I hope this helps!

3 0
3 years ago
Which on is correct
gtnhenbr [62]
P - 1 = 9.25 is the correct answer.  We know that <em>p</em> is the plank's original length, and she cuts one inch off (subtracting 1 inch from the original length).  We also know that this results in a length of 9.25 inches.  When written as an equation, p - 1 = 9.25 would be the correct answer.
7 0
3 years ago
Cooper worked 6 1/6 hrs and j worked 4 5/6 how much longer did cooper work
zhannawk [14.2K]
So when you are trying to tell the difference between something, you need to find the difference through subtraction! 6 1/6 - 4 5/6 = 1 1/3. :) I hope this helps! 
5 0
3 years ago
Other questions:
  • Laura has $30 to spend on food for the week. Which inequality represents this? x &lt; 30 x &lt; 30 x &gt; 30 x &gt; 30
    10·2 answers
  • 31 divided by 2 0ver 4 times 2 equals
    5·2 answers
  • Simplify completely.
    9·1 answer
  • What is the equation of the circle passing through the point (6,5) and centered at (3.-4)?
    13·1 answer
  • DONT HAVE MUCH TIME LEFT, THIS WILL BE DUE SOON!!!
    15·2 answers
  • 4.
    6·1 answer
  • ANSWER ALL THE QUESTIONS IN THIS WORKBOOK.
    8·1 answer
  • In the table, what are the domain and range of the function relating the pressure and volume of an ideal gas at a constant tempe
    5·1 answer
  • HELP ME PLSSSS :))))))​
    10·1 answer
  • Find an expression which represents the difference when (2x − 6) is subtracted
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!