The temperature is 3 degrees Celsius. The weather warms up and the temperature increases 10 degrees. What is the temperature now?

it would be 7 degrees

Step-by-step explanation:

Celsuis means under the 0 degree zone, so when it says 3 degrees celsius and you add 10, you would count from 3. Which leads you to 7 degrees

the diameter is 16 cm. are you a teacher?

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."