Question 5
in a class of 40 children who joined a pre-school, 55% could speak english, while 60%
could speak mandarin.
(a) given that 8 children could speak neither english nor mandarin, how many could
speak both english and mandarin?
(b) how many could speak english only?
draw a venn diagram to represent the sets.

Plz which expression is equivalent to the expression below?

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣