Step-by-step explanation:
let both unknowns be x and y
x = 5y. ......(1)
x + y = 90. ......(2)
sub eqn (1) into eqn (2)
5y + y = 90
6y = 90
y = 90/6
= 15
sub y = 15 to eqn (1)
x = 5y
x = 5 × 15
× = 75
The distributive property, in this case, is to multiply the number outside the parenthesis by the numbers and characters inside the parenthesis:
11 (x - 5)
11x - 55 → Simplified expression.
Hope it helped,
Happy homework/ study/ exam!
Answer:
Perpendicular.
Step-by-step explanation:
4x - 7y = 9 ---> 7y = 4x - 9 ---> y = 4/7 x - 9/7, slope= 4/7
7x + 4y = 5 ---> 4y = - 7x + 5 ---> y = - 7/4 x + 5/4, slope = - 7/4
lopes are negative-reciprocal , so these lines are perpendicular.
Answer:
They are vertical angles
Step-by-step explanation:
they are across from each other/opposites of each other
<em>vertical angles:</em> each of the pairs of opposite angles made by two intersecting lines.
80085 because this is the circumference which u multiply across surface area that gives u the volume.
