Anna is biking at x miles per hour . sara bikes at 10 mi/h. which expression represents the average of anas and sara’s speeds

Step-by-step explanation:

Alright lets get started.

Speed of Anna is : x miles per hour

Speed of Sara is :  10 miles per hour

We are asked to find the average of both speeds.

For finding the average, we need to add both speeds and then divide by 2.

So average speed =

Average speed =  :   Answer

Hope it will help :)

the thermometer is precise but not accurate

step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9