Answer:
The Volume is equal to 2x^3-3x^2+2x-3
Step-by-step explanation:
Formula for the volume of a rectangular prism is V=WHL
We know that:
W=x-1
L=x+1
H=2x-3
So, V= (x-1)(x-1)(2x-3)
Simplify
(x^2+1)(2x-3)
2x^3-3x^2+2x-3
How about 9+6=(7·2)+1 15=15
1. AB is a tangent line to the circle C at point B
∴ AB⊥BC
∴ Δ ABC is a right triangle , ∠B = 90°
∴ AC² = AB² + BC²
BC = radius = 4,000
AC = 4,000 + 22,000 = 26,000
∴ AC² = AB² + BC² = 4,000² + 26,000² = 692 * 10^6
∴ AC = √( 692 * 10^6 ) ≈ 26,306 mi
=======================================================
2. <span>∠BAC = 9°
</span>
<span> Δ ABC is a right triangle , ∠B = 90°</span>
<span> ∠CBA = 90°
</span>
∴ ∠BCA = 180° - (90° + 9°) = 81°
∴ the measure of arc BD which facing the <span>satellite = 2 * 81° = 162°
</span>
while the total angel of the circle = 360°
∴ <span>The percent of the Earth’s equator which is within range of the satellite’s signal = 162/360 = 0.45 = 45%
</span>
Answer:
f^(-1) (x) = -(x+4)/7
Step-by-step explanation:
f(x) = - 7x-4
f(x)+4=-7x
x=-(f(x)+4)/7
f^(-1) (x) = -(x+4)/7
Answer:
12.32
Step-by-step explanation:
So by using y1 +y2/x1+x2 we can find the ratio.
the y1 will be 4 and y2 will be 13.
the x1 will be 5 and x2 will be 6
this is equivilent to 17/11 (4+13/5+6)
17/11 =1.54545454... we can simplify to 1.54
8*1.54=12.32
this might be wrong I haven't done this math in years