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
LiRa [457]
3 years ago
6

Can someone plz help me! I’ve been trying to figure it but I just can’t

Mathematics
1 answer:
VMariaS [17]3 years ago
5 0

Answer:

Step-by-step explanation:

I'll walk you through how to get the answers, but I'm not sure what your drop downs there are asking for.  Maybe once you see the answers, you can figure out how to get the drop downs chosen correctly.

For your quadratic function, the h on the far left is how high the ball is after it is kicked and some amount of time has gone by, the -16t-squared part is the pull of gravity in feet per sec per sec, the 55t is the vertical velocity, and the 1 means that the ball was kicked when it was 1 foot off the ground. If we want to find when ("when" is a time measure) the ball was 45 feet off the ground, we sub in 45 for the h on the far left. Remember that that h is how high the ball is off the ground after it is kicked and some time has gone by. When we sub in 45 for that h, we will solve for t by factoring, to see at what times the ball is 45 feet from the ground.

It would be best to set up the equation and then plug it into the quadratic formula. Subbing in 45 for h gives us:

45=-16t^2+55t+1 and we get everything on one side of the equals sign and set the quadratic equal to 0, giving us:

-16t^2+55t-44=0 and then plug it into the quadratic formula with a = -16, b = 55, and c = -44:

t=\frac{-55+/-\sqrt{55^2-4(-16)(-44)} }{2(-16)}  and we'll simplify that a little at a time:

t=\frac{-55+/-\sqrt{3025-2816} }{-32}  and

t=\frac{-55+/-\sqrt{209} }{-32} giving us 2 solutions:

t=\frac{-55+14.45683229}{-32}=1.2669 sec and

t=\frac{-55-14.45683229}{-32}=2.1705 sec

Let's interpret these solutions. When the ball is kicked up into the air, it experiences parabolic travel. It goes up to a certain max height until gravity wins and the ball comes back down to the ground. Everything thrown up into the air experiences parabolic (or projectile) motion (because gravity affects everything!). So the ball with reach a max height of some number of feet (you could find that out if you needed to, but we'll let that one go for now since this isn't physics class!) before it comes back down.  On its way up to that max height, it will pass the 45 foot mark, and when it's coming back down, it will pass it again. The time that it passes the 45 foot mark going up is 1.2669 seconds after it is kicked. Then it goes up as high as it's going to and comes back down, passing the 45 foot mark on the way back down, at 2.1705 seconds after it was kicked.

However you need to use that interpretation to pick the correct drop-down answer is up to you. Much luck with your quadratics!! They're very important; you haven't seen the last of them by far!

You might be interested in
(Please help me quickly! Timed quiz) <br> Find the range of the function.<br><br> (Picture below)
Ostrovityanka [42]

Answer:

=/ this means that the equation isn't equal

1-x^2 =/ 0

1 =/ x^2

x =/ +1

x =/ -1

then the answer will be B

4 0
2 years ago
What is the following product? 4 square root 7
Charra [1.4K]
The answer is: The product 4 \sqrt{7} is a radical multiplied by an integer and the result is 10.58
 By definition, the set of integers has: negative numbers, positive numbers and zero.
 Radicals are also known as roots and can be written with the symbol: \sqrt[n]{} &#10; , where "n" is the index.
 Normally, when a radical is multiplied by an integer, you must simplify it, but in this case you can calculate the result by using your calculator.
4 0
3 years ago
Read 2 more answers
BRIANLISTT TO WHO ANSWERS WRITE
solniwko [45]

Answer:

iouuoiuikyuhiujujti8yjkh

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Identify the correct corresponding parts
andrey2020 [161]

Answer:

The correct corresponding part is;

\overline {CB} ≅ \overline {CD}

Step-by-step explanation:

The information given symbolically in the diagram are;

ΔCAB is congruent to ΔCED (ΔCAB ≅ ΔCED)

Segment \overline {CA} is congruent to \overline {CE} ( \overline {CA} ≅ \overline {CE})

Segment \overline {CB} is congruent to \overline {CD} ( \overline {CB} ≅ \overline {CD})

From which, we have;

∠A ≅ ∠E by Congruent Parts of Congruent Triangles are Congruent (CPCTC)

∠B ≅ ∠D by CPCTC

Segment \overline {AB} is congruent to \overline {DE} (\overline {AB} ≅ \overline {DE}) by CPCTC

Segment \overline {AE} bisects \overline {BD}

Segment \overline {BD} bisects \overline {AE}

Therefore, the correct option is \overline {CB} ≅ \overline {CD}

3 0
2 years ago
Round 5049 correct to 1 significant figure​
Step2247 [10]

5000

  • Addition (+) and subtraction (-) round by the least number of decimals.
  • Multiplication (* or ×) and division (/ or ÷) round by the least number of significant figures.
  • Logarithm (log, ln) uses the input's number of significant figures as the result's number of decimals.
  • Antilogarithm (n^x.y) uses the power's number of decimals (mantissa) as the result's number of significant figures.
  • Exponentiation (n^x) only rounds by the significant figures in the base.
  • To count trailing zeros, add a decimal point at the end (e.g. 1000.) or use scientific notation (e.g. 1.000 × 10^3 or 1.000e3).
  • Zeros have all their digits counted as significant (e.g. 0 = 1, 0.00 = 3).
  • Rounds when required, after parentheses, and on the final step.

<em>-</em><em> </em><em>BRAINLIEST </em><em>answerer</em><em> ❤️</em>

7 0
2 years ago
Read 2 more answers
Other questions:
  • Li needs to buy 2 kilograms of apples. If she buys 9 apples that each weigh approximately 150 grams, will she have enough? Expla
    14·1 answer
  • How to solve -2(t-4)=10-2t
    15·2 answers
  • The Lumberjack Hardware store found that 5 out of every 10 paint sprayers they recently received were not properly assembled. If
    9·1 answer
  • Peter attempted to use the divide-center method to find the line of best fit on a scatterplot.
    15·1 answer
  • When a molecule has its bonds break, it sometimes gives off energy. This energy is the absorbed by the matter around it, increas
    13·1 answer
  • A cable runs from the top of a pole to a spot on the ground 10 feet from the base of the pole. The pole makes a right angle with
    15·1 answer
  • Write the slope-intercept inequality (-6,4) (0,2)​
    9·1 answer
  • Help me and fast plz
    12·1 answer
  • Which expression is represented on the number line?
    12·2 answers
  • Please help, thanks!!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!