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
horrorfan [7]
3 years ago
13

Plz help i really do need help

Mathematics
1 answer:
Maslowich3 years ago
6 0

Answer:

it just says PDF won't let me download I. sorry

You might be interested in
3x+1. HELP ME!!!!!! I have this question as a quiz 4 u all.
erica [24]

Answer:

3x+1=3x+1

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A projectile is fired with muzzle speed 220 m/s and an angle of elevation 45° from a position 30 m above ground level. Where doe
Allushta [10]

Answer:

  • 4968.6 m from where it was fired
  • 221.33 m/s

Step-by-step explanation:

For the purpose of this problem, we assume ballistic motion over a stationary flat Earth under the influence of gravity, with no air resistance.

We can divide the motion into two components, one vertical and one horizontal. For muzzle speed s and launch angle θ, the horizontal speed is presumed constant at s·cos(θ). The initial vertical speed is then s·sin(θ) and the (x, y) coordinates as a function of time are ...

  (x, y) = (s·cos(θ)·t, -4.9t² +s·sin(θ)·t + h₀) . . . . . where h₀ is the initial height

To find the range, we can solve the equation y=0 for t, and use this value of t to find x.

Using the quadratic formula, we find t at the time of landing to be ...

  t = (-s·sin(θ) - √((s·sin(θ))²-4(-4.9)(h₀)))/(2(-4.9))

  t = (s/9.8)(sin(θ) +√(sin(θ)² +19.6h₀/s²))

For s = 220, θ = 45°, and h₀ = 30, the time of flight is ...

  t ≈ 31.939 seconds

Then the horizontal travel is

  x = 220·cos(45°)·31.939 ≈ 4968.6 . . . . meters

__

As it happens, the value under the radical in the above expression for time, when multiplied by s, is the vertical speed at landing. The horizontal speed remains s·cos(θ), so the resultant speed is the Pythagorean sum of these:

  landing speed = s·√(cos(θ)² +sin(θ)² +19.6h₀/s²) ≈ s√(1 +0.012149)

  ≈ 221.33 m/s

_____

Note that the landing speed represents the speed the projectile has as a consequence of the potential energy of its initial height being converted to kinetic energy that adds to the kinetic energy due to its initial muzzle velocity.

6 0
3 years ago
Help me by tonight please ! Thank you
IrinaVladis [17]
C
B
B
A
C

I think it’s this
7 0
3 years ago
Jill is a sales person for Mountain Transport. Every month she sells vehicles in this ratio one car for every six bicycles , and
UkoKoshka [18]
One car 1c

six bicycles 6b

two motorcycles

1c+6b+2m=9cbm

I think this is right but its been forever since i had to do these so 
8 0
3 years ago
The circle has center O. Its radius is 9 ft, and the central angle a measures 50°. What is the area of the shaded region?
Ivahew [28]

Answer:

35.34305555555

Step-by-step explanation:

You must calculate the percentage taken out of the circle by the shaded region. This would be about 13.8%. Then you take the overall area of the circle and multiply it by the percentage. This should give you your answer.

REMEMBER TO ROUND IF YOU ARE SUPPOSED TO, THERE IS NO INDICATION ON BRAINLY. WITHOUT ROUNDING YOU CAN GET THE ANSWER WRONG.

8 0
3 years ago
Other questions:
  • (4,31/2) + (4,-21/4)
    7·1 answer
  • Identify the translation of the parent function for y = |x + 8|. 8 units up 8 units right 8 units down 8 units left
    10·2 answers
  • What is the average of the first 50 positive odd integers
    10·1 answer
  • Miss Smith recorded the number of sandwiches sold in her Deli on one day. If she sells more than 25 of a type of Sandwich she or
    9·1 answer
  • A pair of designer sunglasses was marked up 10% and is now selling for $165.00. What was the original price of the sunglasses?
    15·2 answers
  • What type of number is -15
    8·2 answers
  • Please solve : -9b(b+2)=0
    12·1 answer
  • 10, 15, 22.5, 33.75.... what’s next?<br> .
    12·1 answer
  • 1)A student earned a grade of 80% on a math test that had 60 problems. How many
    13·2 answers
  • 300 people went on a trip. 20% chose hiking. how many people chose hiking?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!