Do anyone knows what's 10+10÷2= ?
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What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units