Answer:
F
Step-by-step explanation:
A radius of 10 is a diameter of 2*10 or 20
The diameter is a line that goes through the center and touches both sides
To get the answer we can subsittute first equation into second.
x+6y=20
y+6+6y=20
6+7y=20 /-6
7y=14 /:2
y=2
Now we can back substitute
x=y+6
x=2+6
x=8
Finally we get
x=8
y=2
Answer:
12.5
Step-by-step explanation:
First you times 45 and 25 together, since product means multilpication. 45*25= 1125
Then you add 53 and 73, which is 90. Then you divide, which equals to the sum of 12.5. Hope this helps!