Answer:
The correct answer is Option D. 20
Step-by-step explanation:
From the figure we get,
<RUS = 90° because RU ⊥ TS
<u>To find the value of x</u>
It is given that <RUS = 4x + 54
Therefore we can write,
4x + 54 = 90
4x = 90 - 54 = 36
x = 36/4 = 9
<u>To find RS</u>
It is given that,
RS = 3x - 7 = 3*9 -7 = 20
Therefore the correct option is Option D . 20
Answer:
Step-by-step explanation:
Projectile motion is a form of motion in which an object or particle (called a projectile) is thrown
near the earth's surface, and it moves along a curved path under the action of gravity only.
In projectile motion, the horizontal motion and the vertical motion are independent of each
other; that is, neither motion affects the other.
The horizontal component of the velocity of the object remains unchanged throughout the
motion. The vertical component of the velocity increases linearly, because the acceleration due to
gravity is constant (g=9.81 m/s2
).
= 0 cos
0 = 0 sin
To find the time of flight, determine the time the projectile takes to reach maximum height.
The time of flight is just double the maximum-height time.
Start with the equation:
= 0 + = 0 −
At maximum height,
= 0
The time to reach maximum height is
=
0
=
0 sin
=
17.5 sin 31.5°
9.81 = 0.9321
Horizontal distance, = 0
=
0 cos 0 sin
=
0
2
sin 2
2
=
17.5
2
sin(2 ∗ 31.5°)
2 ∗ 9.81 = 13.91
Answer: =
0 sin
; =
0
2
sin 2
2�
Y/x mark me as the brainliest! Have a great day!
Answer:
16 red marbles
Step-by-step explanation:
8 red
9 yellow
7 green
total = 8 + 9 + 7
p(red) = 8/24 = 1/3
Add r number of red marbles to the total.
8 + r red
9 yellow
7 green
total = 8 + r + 9 + 7 = r + 24
p(red) = (8 + r)/(r + 24) = 3/5
Cross multiply.
40 + 5r = 72 + 3r
2r = 32
r = 16
Answer: 16 red marbles
The simplified answer would be 9120ax