Answer:
A. 27°
Step-by-step explanation:
Given that s is perpendicular to r, and <1 = 3x, <2 = 5x + 18, therefore:
m<1 + m<2 = 90°
3x + (5x + 18) = 90°
Solve for x using this equation
3x + 5x + 18 = 90
8x + 18 = 90
Subtract 18 from both sides
8x + 18 - 18 = 90 - 18
8x = 72
Divide both sides by 8
x = 9
Find m<1
m<1 = 3x
Plug in the value of x
m<1 = 3(9) = 27°
Answer:
Plan B
Step-by-step explanation:
Plan A: 15 days per subjet
Plan B: 9 days per subject.
(I am so sorry if this math is actually wrong. It's very late where I am.)
Answer:
5.) 18/11
6.) 2 pizzas
Step-by-step explanation:
5.) Multiply denominator by 1, and add the 7.
6. The family would eat 15 (5x3) slices, therefore needing 2 pizzas.
