9514 1404 393
Answer:
no, the relationship is not proportional
Step-by-step explanation:
The table says Brianna crocheted 19 inches in 10 minutes. If the relation were proportional, Brianna would have crocheted 5×19 = 95 inches in 5×10 = 50 minutes. Her actual length is only 23 inches, so length is not proportional to time.
Assuming that the numbers are right next to each other, we have
(x)*(x+1)=156, expanding into x^2+x=156 and then x^2+x-156=0. We can then use the quadratic formula to get x=(-1+-sqrt(1+624))/2=(-1+-25)/2= 12, -13. -13 wouldn't be a page number, so 12 must be one number, and 12+1 (13) is the other!
Answer:
66 feet
Step-by-step explanation:
30+30=30 feet
6+6=12 yards
1 yard=3 feet
12*3=36
30+36=66
Answer:
7/40
Step-by-step explanation:
There are 3 girls+9 boys = 12 students in the 7th grade
P (girl in 7th grade) = girls/ total
= 3/12 = 1/4
There are 7 girls+3 boys = 10 students in the 8th grade
P (girl in 8th grade) = girls/ total
= 7/10
P(7th grade girl, 8th grade girl) = 1/4 * 7/10 = 7/40
