Answer: -32
Step-by-step explanation:
35 (t + 29) = −3(3 − t)
Open the brackets
35t+1015= -9+3t
Collect like terms
35t-3t=-9-1015
32t= -1024
Divide both side by 32
32t/32 = -1024/32
t= -32
Answer:
5 chaperones to 25 students
Step-by-step explanation:
You have to see which expression can be multiplied by 5 since there are 5 chaperones each number of students for example:
5 x 2 = 10
5 x 3 = 15
5 x 4 =20
5 x 5 = 25
For this there is a dotted line going through -2 on the graph and the shading is on the right side of the grid so -2,-1, and every positive number.
First find the number of girls in her class.
29 student - 21 boys = 8 girls
So, the ratio of girls to boys is:
8 girls:21 boys
Or just:
8:21
answer: 8:21
Answer:
The z-score for this kernel is -2.3
Step-by-step explanation:
* Lets revise how to find the z-score
- The rule the z-score is z = (x - μ)/σ , where
# x is the score
# μ is the mean
# σ is the standard deviation
* Lets solve the problem
- The popping-times of the kernels in a certain brand of microwave
popcorn are normally distributed
- The mean is 150 seconds
- The standard deviation is 10 seconds
- The first kernel pops is 127 seconds
- We want to find the z-score for this kernel
∵ z-score = (x - μ)/σ
∵ x = 127
∵ μ = 150
∵ σ = 10
∴ z-score = (127 - 150)/10 = -23/10 = -2.3
* The z-score for this kernel is -2.3
