19.85
- 2.50
-------------
17.35
Answer: She'll pay $17.35 for the shirt.
Answer: 56 degree
Explanation:
2x + 16 + 3x + 2 + 2x + 2x = 180 (straight angle)
9x + 18 = 180
9x = 162
x = 162/9
x = 18
But WSV = 3x + 2
And x = 18
=> 3(18) + 2
=> 54 + 2 = 56
Answer:
The equations are:
and 
Step-by-step explanation:
Given
Represent bones eaten Today with T and yesterday with Y
Required
Write the equation
In the first statement, we have that:

Reading further; In the second statement

Hence, the equations are:
and 
Solving further:
Substitute 2Y for T in the second equation


Divide both sides by 4


Recall that



Answer:
D. We can be 95% confident that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%.
Step-by-step explanation:
The interpretation of a confidence interval of level x% means that we are x% sure that the interval contains the true mean of the population.
In this problem, we have that:
The population are all the cell phone users.
The 95% confidence interval is (73.1%, 76.9%).
Which of the following is an appropriate interpretation of the 95% confidence interval?
D. We can be 95% confident that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%.
Answer:
the bottom one
Step-by-step explanation:
all exponential graphs look similar to that