Answer:
t₁ = 2,75 sec
Step-by-step explanation:
The ball will get h maximum when dh/dt ( its vertical component of the speed is equal to 0. At this moment the ball has flown half of the total flight time
Then
h(t) = - 4t * ( 4*t - 11 )
h(t) = - 16*t² + 44*t
Taking derivatives on both sides of the equation we get:
dh/dt = - 32*t + 44
dh/dt = 0 ⇒ -32*t + 44 = 0
t = 44/32 ⇒ t = 1,375 s
So twice this time
2*t = 2 * 1.375
Total time t₁ = 2,75 sec
HELLO EVERYONE,
TO FIND Y:
We know
a straight line makes an angle of 180
so,
180 = 119-y
180-119 = y
therefore y is
y = 59 degrees
TO FIND X:
We know,
all angles of a quadrilateral make a sum of 360,
so,
A+B+C+D = 360
HERE,
A = 131
B = 56
C = Y = 59
D = X
131 +56+59+X = 360
360 - 246 = X
X = 114 Degrees
Please do mark me the branliest if it helpful for you. Thanks.
Model house dimensions
5 cm × 4 cm = 20 cm²
1 cm = 1.5 m
multiply cm by 1.5 = meters
5 × 1.5 = 7.5 m
4 × 1.5 = 6 m
Real house dimensions
7.5 m × 6 m = 45 m²
Supplementary angles are angles that add up to 180<span>°
so 180</span>° - 105° = 75<span>°
therefore your answer is 75</span><span>°</span>
