Core Math 6 2014 - MA3106 IC Are these expressions equivalent? Explain why or why
not
42 +35 7(6+5)
They are equivalent because 42+35=77 and 7(6+5)=77
Please help

yes

Step-by-step explanation:

when you add 6 and 5 you get 11

7 times 11 is 77

42 plus 35 is 77

they equal eachother

b.an increase in a causes b to decrease

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere