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
k0ka [10]
4 years ago
7

The height in meters of a rocket launched from the ground after t seconds is modeled by h(t)=-9.8r^2+49t. Graph a graph represen

ting the interval of time when the rocket will be higher than 40 meters
Mathematics
2 answers:
Darina [25.2K]4 years ago
7 0
9.8t^2-49t+40=0

t=(49±√833)/19.6

t≈1.027, 3.97

1.027<t<3.97
borishaifa [10]4 years ago
3 0
First, find where it is equal to 40 meters and find where it is above it

40=-9.8t²+49t
9.8t²-49t+40=0

using quadratic formula
t=1.02746 and x=3.97254
test a point in the middle
h(2)=58.8
that is higher

so the interval would be from x=1.02746 to 3.9754
1.02746<x<3.9754 is the interval

to graph it, graph h(t)=-9.8t²+49t-40 and the part where it is above the x axis is where it is higher than 40 meters
You might be interested in
What fraction of students prefer Mt Rushmore over Grand Canyon ? Write in simplest form ?
Flura [38]
For 14/28 is simplest form would be 1/2 and 8/28 in simplest form would be 2/7. I hope this helps. ^^
4 0
3 years ago
Read 2 more answers
Which expression is equivalent to 34 ⋅ 3−9? 1 over 3 to the 13th power 1 over 3 to the 5th power 35 313
storchak [24]
1 over 3 to the 5th
When you divide you subtract your exponents...and then put negative exponents in the denominator

8 0
3 years ago
Read 2 more answers
Please give me four more
Harman [31]
Just factor 48  factors. It has many.
2 * 2 * 12
3 * 2 *  8
4 * 4 * 3
1 * 2 * 24

And the factors given above can have the height and the smallest of the other factors interchanged.

So 3 * 8 * 2 is not the same thing as 3 * 2 * 8 although your teacher may argue that they are the same. All you have to do is put a different face on the bottom to make the height and width different.

Other teachers would say they were different. I have given you what you requested, so I think you are done with this question.
6 0
3 years ago
The one about distibutive property?
Angelina_Jolie [31]
The answer for the distibutive oneis 7(4+6)
6 0
4 years ago
HELP HELP HELP*. Hei has $1,700 in a retirement account earning 4% interest compounded annually. Each year after the first, she
KatRina [158]

~~~~~~~~~~~~\stackrel{\textit{payments at the beginning of the period}}{\textit{Future Value of an annuity due}}\\ ~~~~~~~~~~~~ \\\\ A=pmt\left[ \cfrac{\left( 1+\frac{r}{n} \right)^{nt}-1}{\frac{r}{n}} \right]\left(1+\frac{r}{n}\right)

\begin{cases} A=\textit{accumulated amount} \\ pmt=\textit{periodic payments}\dotfill &1700\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &5 \end{cases} \\\\\\ A=1700\left[ \cfrac{\left( 1+\frac{0.04}{1} \right)^{1\cdot 5}-1}{\frac{0.04}{1}} \right]\left(1+\frac{0.04}{1}\right) \\\\\\ A=1700\left( \cfrac{1.04^5~~ - ~~1}{0.04} \right)(1.04)\implies A\approx 9576.06

8 0
3 years ago
Other questions:
  • the height of the candle is 13cm and the circumference of the candle is 31.416cm. to the nearest centimeter how much wax is need
    11·1 answer
  • Geometry- can someone do the second translation and give me the coordinateS PLEASE BRAINLIESF AND LOTS OF POINTS​
    8·1 answer
  • Which phrase best defines a square?
    8·1 answer
  • get your strike on bowling alley charges $5 to rent shoes and $2.75 per game. down the road strikes out bowling alley charges on
    5·1 answer
  • A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 340 babies were​born, an
    8·1 answer
  • Which equation does an belong from <br> 15=-5 *-3<br> 4--2=6<br> 2 + -5= - 3<br> -3*-4=-12
    10·1 answer
  • What are the answers? No hurry; I just have other things to do.
    11·1 answer
  • What is the answer to 4÷8/12
    15·1 answer
  • Which graph represents a function?
    15·1 answer
  • A store sells candles. Each cans,e costs the same amount. During a sale, the store reduces the price of each candle by $1.70, Ow
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!