15 x 25 = 375
15 x 50 = 750
375 + 750 = 1,125
She has 1,125 books.
Answer:
d
Step-by-step explanation:
Solution by substitution method
y=7x+8
∴y-7x=8
and y=x+20
∴y-x=20
Suppose,
-7x+y=8→(1)
and -x+y=20→(2)
Taking equation (1), we have
-7x+y=8
⇒y=7x+8→(3)
Putting y=7x+8 in equation (2), we get
-x + 7x + 8 = 20
6x = 20-8
6x = 12
x= 12 / 6
x = 2
substitute for x in equation (3)
y = 7(x) + 8
y = 7(2) + 8
y = 22
You only need a common denominator for adding and subtracting! <span />
Answer:
6
Step-by-step explanation:
The ASP of a hexagon is 720 degrees
Answer: 70
Step-by-step explanation: 6300/90=70 Brainliest please?
