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Answer:PQ-23/NEGATIVE 56 TRIANGLE 78 WITH A ANSWER OF 43
Step-by-step explanation:
I RLLY DONT IF IT IS CORRCT
The length of the rectangle is 14
<u>steps:</u>
9 + 9 = 18
46 - 18 = 28
28 ÷ 2 = 14
Answer:
a) 70
b) 10π ft²/ft
c) 0.24 ft/sec
Step-by-step explanation:
1) y = x³ + 2x

or
= 
at
and x = 2
= 
or
= 60 + 10 = 70
2) A = πr² ft²

or
= 2(πr)
at r = 5 ft
= 2(π × 5) ft²/ft
or
= 10π ft²/ft
3) From Pythagoras theorem
Base² + Perpendicular² = Hypotenuse²
Thus,
B² + P² = H² .............(1)
here, H = length of the ladder
P is the height of the wall
B is the distance from the wall at bottom
or
B² + P² = 25² ...........(1)
at B = 20 ft
20² + P² = 25²
or
P² = 625 - 400
or
P = √225
or
P = 15 ft
differentiating (1) with respect to time, we get

at B = 20 ft,
and P = 15 ft
⇒ 2(20)(0.18) +
= 0
or
= - 7.2
or
= - 0.24 ft/sec (Here negative sign depicts the ladder slides down)
Answer:
24) x = 9.2
25) x = 30.8
Step-by-step explanation:
Given
See attachment for triangles
Solving (24)
To solve for x, we make use of cosine formula
i.e.
cos(40) = adjacent ÷ hypotenuse
So, we have:
cos(40) = x ÷ 12
Multiply both sides by 12
12 cos(40) = x
12 * 0.7660 = x
x = 9.2
Solving (25)
To solve for x, we make use of sine formula
i.e.
sin(25) = opposite ÷ hypotenuse
So, we have:
sin(25) = 13 ÷ x
Multiply both sides by
x sin(25) = 13
Divide by sin(25)
x = 13 ÷ sin(25)
Using a calculator
x = 30.8