63 = 0.63×10² = 126/2 = 3×21 = √3969 = 77₈
The last is as a base-8 number.
I dont know the answer becouse im not there but i can show you how to get the answer..
you know the rulers the are half way cut?use that and measure each angle
(i hope i helped!)
Answer:
y= 3
Step-by-step explanation:
The triangle on the left is a right triangle, so we can use trig functions to solve for the missing side, y.
First, find the length of the side that both triangles are connected to.
tan30=x/9
Isolate the x variable and solve.
9(tan30)=x
x= 5.19615
Now use the Pythagorean Theorem to solve for the side length, y.
a^2+ b^2 = c^2
(5.19615)^2+ b^2= 6^2
c= 3
P = perimeter
Perimeter of a rectangle = l + l + w + w
or P = 2l + 2w
You know:
P = 150 m
l = w + 5 [length is 5 m greater than the width]
P = 2l + 2w Plug in what you know
150 = 2(w + 5) + 2w Simplify, distribute/multiply 2 into (w + 5)
150 = 2w + 10 + 2w
150 = 4w + 10 Subtract 10 to both sides of the equation
140 = 4w Divide 4 on both sides
35 = w
PROOF l = w + 5 ---> l = 40
P = 2l + 2w
150 = 2(40) + 2(35)
150 = 80 + 70
150 = 150
f(x) = x^2 -3x +2
Replace x with 2:
f(2) = x^2 -3(2) +2
f(2) = 4-6 +2
f(2) = 0
g(x) = 4x-5
replace x with -1
g(-1) = 4(-1) -5
g(-1) = -4-5
g(-1) = -9
Now subtract
f(2) - g(-1) = 0 - (-9) = 0+9 = 9
The answer is 9.
