Answer:
12/33
Step-by-step explanation:
No.of girls = 21
No.of boys=12
Total no. of students=21+12=33
Probability that a boy's name is drawn at random=12/33
Answer:
A. Jada drank less water than Elena
B. Lin drank more water than Elena
Step-by-step explanation:
Elena drink 3 Liters of water yesterday Jada drank 3/4 times as much water as Elena. Lin drank twice as much water as Jada.
A. Did Jada drink more or less water than Elena?
B. Did Lin drink more or less water than Elena?
Elena drank 3 liters of water
Jada drank 3/4 times as much water as Elena.
Lin drank twice as much water as Jada
Elena = 3 liters
Jada = 3/4 × Elena
=3/4 × 3
=9/4 liters
=2 1/4 liters
=2.25 liters
Lin=2×Jada
=2×9/4
=18/4
=4 2/4
=4.5 liters
Did Jada drink more or less water than Elena?
A. Jada drank less water than Elena
Because 2.25 liters is less than 3 liters
B. Lin drank more water than Elena
4.5 liters is greater than 3 liters
15/20 is 3/4s or 0.75
1/4 is 0.25
Answer:
x =5 x =-1
Step-by-step explanation:
X^2-4x+4=9
(x-2)^2 = 9
Take the square root of each side
sqrt((x-2)^2) = sqrt(9)
x-2 = ±3
Add 2 to each side
x-2+2 = 2±3
x = 2+3 x =2-3
x =5 x =-1
