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
aev [14]
3 years ago
9

an object is launched at 4 ft./s from 88 foot tall platform the objects height H in feet after T seconds is given by the equatio

n H=-16T^2+8t+80 when does the object strike the ground
Mathematics
1 answer:
posledela3 years ago
8 0

Answer:

1.5seconds

Step-by-step explanation:

When the ball hits the ground, the height is equal to zero. So find t when H=0:

H=16t²+8t+80

0=16t²+8t+80

0=2t²+t+10

0=(2t-3)(t+2)

So (2t-3)=0, or (t+2)=0

So t=1.5 or t=-2. Time can't be negative though, so we take our answer as 1.5seconds

You might be interested in
Which pair of triangles can be proven congruent by SAS?
ivolga24 [154]

Answer:

Second option

Step-by-step explanation:

They have two congruent pairs of sides and one congruent pair of angles.

4 0
2 years ago
A snow plough has a 3.2m blade set at an angle of 30 degrees How wide a path will the snow plough clear
snow_tiger [21]

Answer:

1.6m

Step-by-step explanation:

The length of the blade is 3.2m

The angle which the blade makes is 30°

Assuming the path of the blade and the length it covers is a right-angled triangle,

The length of the blade is the hypothenus while the path at which it clears is the opposite of the triangle.

See attached document for better illustration.

Using SOHCAHTOA,

Sinθ = opposite / hypothenus

opposite = x

hypothenus = 3.2

θ = 30°

Sin30 = x / 3.2

X = 3.2sin30

X = 3.2 × 0.5

X = 1.6m

The path which the snow plough clears is 1.6m

6 0
3 years ago
Once you have created both sets of numbers, complete the following tasks. In each task, make sure to clearly label which set you
scoray [572]

Answer:

what set of numbers??

you haven't provided any set of numbers

7 0
2 years ago
PLEASE HELP ASAP! BRAINLIEST TO BEST/RIGHT ANSER!!
s2008m [1.1K]
The answer is B.) 1/81
8 0
3 years ago
Interoperate your solution in the context of the problem.<br> f(10)=1.75r+9
iVinArrow [24]

Answer:

Simplifying

f(r) = 5 + 1.75r

Multiply f * r

fr = 5 + 1.75r

Solving

fr = 5 + 1.75r

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'r'.

f = 5r-1 + 1.75

Simplifying

f = 5r-1 + 1.75

Reorder the terms:

f = 1.75 + 5r-1

Step-by-step explanation:

tada i think

6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the future value of the loan. $34300 loan at 3.5% for 4 months
    7·1 answer
  • The equation of a line is y = -3x. To which equation is the line parallel to? A. Y = 1 third x minus 4 B. Y = 3x + 10 C. Y = -10
    5·1 answer
  • Rewrite the rational exponent as a radical by extending the properties of integer exponents. 2 to the 3 over 4 power, all over 2
    14·1 answer
  • What is the difference? Complete the equation. -1 2/5 - (-4/5) = ?
    12·1 answer
  • Find the volume of the figure
    7·1 answer
  • Which functions represent the arithmetic sequence 8, 1.5, –5, –11.5 . . . ? Check all that apply.
    6·1 answer
  • Rain is falling steadily in Seattle, Washington. After 6 hours, 4 inches of rain has fallen. How many inches of rain will fall i
    13·1 answer
  • What is the solution to the inequality 1/5x-4&lt;-2/5x​
    15·2 answers
  • Which equation of c makes this equation true. 12-9+c =12 Pls only direct answers
    7·2 answers
  • which of the following are right triangles: a triangle with side lenghts 6 inches, 8 inches,10 inches, a triangle with side leng
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!