15 = 5 + 8d - 12
15 = 8d - 7
15 + 7 = 8d
22 = 8d
d = 2.75
Answer:
840 mm
Step-by-step explanation:
multiply by 10
Height: width
4:3 = 24:x
x = 18
The frame will be 18 inches wide.
Answer:
angles that are all equal and sides that all have the same length
Step-by-step explanation:
Answer:
x = 19
Step-by-step explanation:
A circle has a total of 360 degrees. Because central angles are congruent to the degree measures of their arcs, and because of vertical angles we can construct the equation :
5x+37+5x+37+3x-9-9=360
We can simplify this to :
8x+28=360
Subtract 28, divide 8, and x is 19
