Sarah is x years old Thomas is 3 years older than Sarah David is twice as old as Sarah the total of their ages is 51 form an equation in x and solve it to work out Sarah's age​

Step-by-step explanation:

3+2x=51

2x=51-3

2x=48

x=48/2

x=24

SARAH'S AGE IS 24 YEARS

Sarah is 16 years old

Step-by-step explanation:

3+2x+x=51

2x+x=48

If x= 16

3+(2*16)+16=51

Sarah is 16 years old

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

  q

step-by-step explanation:

each line from a vertex to the midpoint of the opposite side is called a median. the point where the medians intersect, point q, is the centroid.

the centroid of δabc is point q.