3x=18 because you add the like terms 6 and 12
Answer:
3 grams
Step-by-step explanation:
square=2g x 6=12g
cricle= 3g x 3= 9g
12+9=21 grams +2triangles
2nd chain:
cricle= 3g x 2 = 6g
square= 2g x 3=6g
6 +6=12g + 5triangles
21 + 2t = 12 + 5t
9 + 2t = 5t
9 = 3t
3=t
triangle = 3g
Answer:
45
Step-by-step explanation:
20 boys= 5 times the ratio
So, 5x5=25
25 girls and 20 boys= 45 students
Answer:
Test statistic = - 2.29
Pvalue = 0.0110
Step-by-step explanation:
The hypothesis :
H0 : p = 0.3
H1 : p < 0.3
Test statistic :
z=pˆ−p/√p(1−p)/n
pˆ = 0.2
Z = (0.20 - 0.30) / √(0.30(1 - 0.30) / 110
Z = - 0.1 / √0.0019090
Z = - 0.1 / 0.0436931
Z = - 2.29
Test statistic = -2.29
The Pvalue :
P(Z < -2.29) = 0.0110
