Answer: 3/8 + 4/5 = <u>1 7/40</u>
4/5 = 32/40
3/8 = 15/40
32/40 + 15/40 = 47/40
47/40 = 
Hope this helped! Have a great day! :D
Answer:
Step-by-step explanation:
Area of one triangular face = 0.5(base)(height) = 20 sq cm
Surface area = 4(20) = 80 sq cm
Answer:
(1 + 8i) / 65.
Step-by-step explanation:
When we divide by a complex number we multiply top and bottom of the fraction by the conjugate; this creates a real denominator.
So i / (8 + i) The conjugate of 8 + i is 8 - i, so we have:
i(8 - i) / (8 + i)(8 - i)
= (8i - i^2) / (64 - i^2) Now i^2 = -1 so we have:
(8i + 1) / (64 + 1)
= (1 + 8i) / 65.
Answer:
x = -8
Step-by-step explanation:
x = 2y - 4 --- Equation 1
7x + 5y = -66 --- Equation 2
I will be using the substitution method to solve this.
Substitute x = 2y - 4 into Equation 2:
7x + 5y = -66
7(2y - 4) + 5y = -66
Evaluate.
14y - 28 + 5y = -66
Evaluate like terms.
19y - 28 = -66
Isolate 19y.
19y = -66 + 28
= -38
Find y.
y = -38 ÷ 19
y = -2 --- Equation 3
Substitute y = -2 into Equation 1:
x = 2y - 4
x = 2(-2) - 4
Evaluate.
x = -4 - 4
x = -8
Answer:
R - (-6,10)
Flip the x-value when reflecting over y axis, and flip y-value when reflecting over x-axis
