Answer:
<em>122.46 cm² </em>
Step-by-step explanation:
A =
~~~~~~~~~
= 8 cm
= 5 cm
A = 3.14 ( 8² - 5² ) ≈ <em>122.46 cm²</em>
Answer:
The time it takes them to grade the essays if they work together is 1.857 hours
Step-by-step explanation:
- Let t1 is time taken by Professor J = 3 hours
- Let t2 is time taken by the assistant = 5 hours
- Let tb is the time taken by both
The formula for “Work” Problems that involve two persons is
<=>
<=>
<=> tb =
The time it takes them to grade the essays if they work together is 1.857 hours
Just add 3 to the eqn,
y=5x+3
the 5x is the slope and the 3 is the y int
the y int is where you can shift your function up or down
Hi there!
You need to find the amount she got right out of 88, then divide that number by 88. Take the answer and multiply it by 100 for the percentage.
88-11=77
77/88=0.875
0.875*100=87.5%
Hope this helps!
Answer:
Step-by-step explanation:
This is a hypothesis testing involving population proportion. The null hypothesis would be that fewer than or 50% of the people would favor spending money for a sewer system. Since she will vote to appropriate funds only if she can be reasonably sure that a majority of the people in her district favor the measure, then the alternative hypothesis which she should test is that more than 50% of the people would favor spending money for a sewer system.