Answer:
fast multiply 5 by 39 to get the total age of the five people now as you are told those per 5 so imagine the six person being you if you enter you're going to add to their ages so they mean is going to be for six people so take the six people x their mean age now we have two different total ages for the five people and for the six people subtract the total age of the 5 from the 6th total ages to get the age of the person who entered the room if you don't understand please ask me and be willing to help
the answer is 15 loads of gravel because 3 times 2 equals 6 which means 3 * 5 is equal to 15
Area of a circle = pi r^2
= 3.14 x 53^2
= 3.14 x 2809
Area of circle = 8820.26 cm^2
Therefore area of circle to 3 significant figures is 8820 cm^2
Answer:
a transformation happen when the shape changes. There are four transformations
translation
rotation
reflection
dilation
translation, rotation and reflection do not change the shape or the size of the shape and are known as rigid motions
