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
kumpel [21]
3 years ago
6

The altitude of an object, d, can be modeled using the equation below. d=-16t^2+vt+h From the edge of a 486-foot cliff, Peyton s

hot an arrow over the ocean with an initial upward velocity of 90 feet per second. In how many seconds will the arrow reach the water below?
Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

9 seconds

Step-by-step explanation:

d=-16t²+vt+h

The water level will be at 0 level (distance = 0)

0 = 16t² - 90t - 486

8t² - 45t - 243 = 0

(t - 9) (8t + 27) = 0

t = 9 or t = -27

since time should be a positive number, so t = 9 second

You might be interested in
Rebecca makes an A in a 4-credit math course , a B in a 3-credit English course, a C in a 3-credit science course, a B in the as
Elan Coil [88]

Answer: b

Step-by-step explanation: krusty crab pizza is the pizza for you and me

4 0
3 years ago
Write the equation for the line that passes through (2, -4) and is
Kryger [21]

Answer: y= x-2

Step-by-step explanation:

Perpendicularity entails the slope of line a is -1 divided by the slope of line b

m1= (-1/m2)

From y=Mx +c

We compare with x-4y=7

y=(1/4)x-7/4

Meaning m2= 1/4

m1= -1/(1/4)= -1*4= -4

((y-y1)/(x-x1))= ((y2-y1)/(x2-x1))=m1

x1= 2, y1= -4

((y-(-4))/(x-2))= -4

((y+4)/(x-2))= -4

Cross multiply

y+4= -4(x-2)

y= x-2

3 0
3 years ago
At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2
defon

Answer:

y = 8x − 2

Step-by-step explanation:

x =the number of boxes

Total jars of tomato sauce is each box contains 8 jars so that is 8 x x=8x

2 jars were removed making it 8x-2

y will be 8x-2

3 0
3 years ago
You have to pay $32.75 for an item after a 25% markup. What was the original price?
stepan [7]
It should be around 24.56 i rounded tho
7 0
3 years ago
Is the GCF of two even numbers 2
lions [1.4K]
No, GCF means greatest common factor, meaning the largest number than can be divided into the number. 2 would be the lowest common factor or LCF.
EX.  200 & 440. In this case the GCF would be 40, but the LCF would be 2 because they are both even numbers


3 0
3 years ago
Read 2 more answers
Other questions:
  • April is randomly choosing five CDs to bring in her car from the following: 6 pop CDs, 8 rock CDs, and 10 R&B CDs. What is t
    5·2 answers
  • Add 3 feet 6 inches +8 feet 2 inches +4 inches +2feet 5 inches
    11·2 answers
  • RS = 4x – 9, ST = 19, RT = 80 – 14<br><br> Equation:<br><br> 82 – 14<br><br> RS<br><br> RT
    11·1 answer
  • What does x = when 2x + 6 = 6x-2
    10·2 answers
  • What is the domain of the function f(x)=3 square root x-2
    9·2 answers
  • Find b<br> Round to the nearest tenth:<br> c<br> 8 cm<br> 820<br> 550<br> b<br> b = [? ]cm
    15·2 answers
  • Please rewrite without absolute value for the given conditions:<br> y=|x-3|+|x+2|-|x-5|, if x &lt;-2
    10·1 answer
  • The baseball association bought 96 shirts
    12·1 answer
  • 9. To stitch a shirt, 2 m 15 cm cloth is needed. Out of 40 m cloth, how many shirts can be stitched and how much cloth will rema
    8·1 answer
  • Y = -x + 7<br><br> graph the linear equation and identify the x-intercept
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!