So, the multiplicative inverse of a number is a number that nullifies the impact of the number to identity 1. Thus the multiplicative inverse of a number is a number by which the multiplication results in 1. That is, number b is the multiplicative inverse of the number a, if a × b = 1.
Step-by-step explanation:
x-8= -3x²+4x-1
3x²+x-4x=-1+8
3x²-3x=7
3x²-3x-7=0
x²-x-3.5=0
Delta = -1²-(4)(1)(-3.5)
+1+14=15
x1=-1- sqrt(15) /2(1) =2.43
x2=-1+sqrt(15)/2(1) =-1.93
I don't think it is right but i tried my best
We have been given that angle D is an acute angle such that . We are asked to find the measure of angle D using calculator.
We will use arcsin to solve for angle D.
Using calculator, we will get:
Upon rounding to nearest tenth of degree, we will get:
Therefore, the measure of angle D is approximately .
Answer:
18x
Step-by-step explanation:
18x times 18x
so the side is 18x because it was squared
The problem above creates a right triangle as the ramp reaches a window making an angle from the ground.
Given:
Hypotenuse = 10 ft ramp
θ = 30°
Find:
Opposite side = O
θ = at 15 ft. ramp
First, we will find the height of the certain window. This is considered to be the opposite side and the ramp serves as the hypotenuse. We can use the SOH function in Pythagorean theorem
sin 30° = O / 10
O = 10 (sin 30°) ⇒ simplify to get the opposite side
O = 5 ft ⇒ height if the certain window from the ground
Use the obtained value to get the angle needed by a 15 ft ramp leaning on the same window.
sin θ = 5 / 15
sin θ = 1/ 3 ⇒ simplify further to get the angle
θ = arc sin (1/3)
θ = 19.47°