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
Kruka [31]
3 years ago
12

Syyedah throws a baseball with an initial velocity of 30 meters per second from a roof at an initial height of 75 meters. Write

an equation to model this scenario. How long does it take the ball to reach the ground? Use algebra to find your answer. (5 pts)
Mathematics
1 answer:
Yuliya22 [10]3 years ago
4 0
Initial velocity: v o = 30 m/s
h = 75 m
h = v o * t + g * t² / 2
75 = 30 · t + 9.8 · t² / 2
75 = 30 t + 4.9 t²
An equation is: y = 4.9 t² + 30 t - 75
4.9 t² + 30 t - 75 = 0
t_{12}= \frac{-30+/- \sqrt{900+1470} }{9.8}= \\  =\frac{-30+48.68}{9.8}
t = 1.9 s


You might be interested in
Rewrite the equation 3x+4y=20 in slope intercept form
kotykmax [81]
Y=-3/4x+5 because you get the y by itself
3 0
3 years ago
If four times the sum of a number and 5 is divided by 3 , the result is 16
Black_prince [1.1K]

If four times the sum of a number and 5 is divided by 3, the result is 16. Step 1. Let x be the number.

Step 2. Four times the number and 5 is divided by 3

Step 3. The result is 16

Step 4. Multiply by 3 to both sides of equation to get rid of denominator

Step 5. Subtract 20 from both sides of equation

Step 6. Divide by 4 to both sides of equation

Step 7 ANSWER is x=7.

I hope the above steps were helpful.

6 0
3 years ago
Read 2 more answers
PLEASE HELP I DONT UNDERSTAND 40 POINTS
fomenos

Answer:

a. reflection over y axis, then reflection over x-axis

b. xy=qh, xz=qj, yz=jh

c.Both triangles are congruent because all of the sides are congruent

Step-by-step explanation:

8 0
3 years ago
Which of the graphs below correctly solves for x in the equation −x2 − 3x − 1 = −x − 4?
Tanzania [10]
We have 
−x²<span> − 3x − 1 = −x − 4

let 
f(x)=</span>−x² − 3x − 1
g(x)= −x − 4
the solution for
f(x)=g(x) is the intersection both graphs

using a graph tool
see the attached figure

the solution are the points
(-3,-1)
and
(1,-5)

8 0
3 years ago
Read 2 more answers
If a swimming pool is being filled at a rate of 1 liter per second, how long will it take in minutes to fill a 6,000 liter pool?
Valentin [98]
Time taken
= 6000/1
= 6000s
= 100 min
= 1 hour 40 minutes
4 0
3 years ago
Other questions:
  • What's the solution set of the inequality 3x - 5&gt; 19
    12·1 answer
  • Find the area of the triangle and solve for x.<br> Please help.
    12·1 answer
  • 25 points of apple juice are poured into 1/2-pint bottles.How much bottles can be filled with apple juice?
    7·1 answer
  • Convert 12 over 5 to a decimal using long division.<br><br> 1.2<br><br> 2.4<br><br> 2.6<br><br> 3.4
    12·2 answers
  • Problem situation:
    10·2 answers
  • Express each of the following fractions as a mixed number (the sum of a whole number and the remaining fractional units).
    7·1 answer
  • Which of the following functions is graphed below?
    11·1 answer
  • Can someone please help me with these questions ?!!!
    7·1 answer
  • Please I really need help, and please don't try and play me becasue someone just put the wrong answer and juked 70 of my points
    10·2 answers
  • What is the base of -(-2^2)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!