Answer:
Option number B
Step-by-step explanation:
As per the statement:
Pieter wrote and solved an equation that models the number of hours it takes to dig a well to a level of 72 feet below sea level.
Given the equation as:
7h - 5 ( 3h -8 ) = -72
Using distributive property,
a ⋅ ( b + c ) = a ⋅ b + a ⋅ c
7h - 15h + 40 = - 72
Combine like terms;
-8h + 40 = -72
Subtract 40 from both sides we have;
-8h 8= -112
Divide both sides by -8 we have;
h = 14 hours
Therefore, the statement is true about Pieter’s solution is, It must be a positive number since it represents a number of hours.
Answer:
C.
Step-by-step explanation:
Hypothesis testing procedure:
Hypothesis:
The null hypothesis will be the variances of sales of two musical stores are equal and the alternative hypothesis will be the variances of sales of two musical stores are not equal
Level of significance: alpha=0.05
Test statistic: F=variance A/variance B=(30)^2/(20)^2=900/400=2.25
P-value: p=0.107
As the alternative hypothesis mentioned that the variances are not equal this leads to two tailed test. so the p-value is calculated using excel function 2*F.DIST.RT(2.25,24,15).
Conclusion:
The p-value seems to exceed the alpha=0.05 and this depicts that the null hypothesis should not be rejected.
Your middle finger and index/pointer.
(a) There are 1/4 cups of flour per serving
<u>WORK:</u> 1.5/6=1/4 (change 1 1/2 into decimal)
(b) <u>**not sure**</u> There are approximately .18 cups of sugar per serving.
<u>WORK:</u> 9/2+4/12=13/12 and then divide 13/12 by 6.
(c) You need 2 1/4 cups of flour to make 9 servings.
<u>WORK:</u> 1.5/2=.75
1.5+.75=2.25=2 1/4
(d) Someone would need to know the amount of sugar to properly make the recipe and if needed know how much to put if you wanted to split the recipe.
The answer you are looking for is C. (12)
