Answer:
C. p > -3
Step-by-step explanation:
We observe the characteristics of the shaded ray on the number line.
It goes to the right, so the inequality must be either greater than or greater than or equal to.
The circle where it starts on is open, so the inequality must not be less than or equal to or greater than or equal to.
Now, without even looking at the numbers themselves, we can find our answer.
There are four different types of inequalities, and we eliminated three of them (<, <=, >=). This leaves only one left (>). The only answer choice that uses the greater than symbol is C, so it must be our answer.
Flip the bottom part after the "/" so you get ((x+3)/9)*(6/(x+12)) Cancel and multiply to get 2(x+3)/3(x+12) this is as simplified as it is going to get.
Answer:
a Dryer @ 4,000 watts. Cost = 172 cents
a Heater @ 1,500 watts. Cost = 64.5 cents
a Radio @ 40 watts. Cost = 1.72 cents.
Step-by-step explanation:
Given that cost of 1 kilowatt hour = 4.3 cents.
Then cost of 1 kilowatt for 10 hours = 4.3*10 = 43 cents.
4000 watts = 4000/1000 kilowatt = 4 kilowatts
Then cost for running a Dryer for 10 hours = 4*43 = 172 cents.
-----------
1500 watts = 1500/1000 kilowatt = 1.5 kilowatts
Then cost for running a Heater for 10 hours = 1.5*43 = 64.5 cents.
-----------
40 watts = 40/1000 kilowatt = 0.04 kilowatts
Then cost for running a Radio for 10 hours = 0.04*43 = 1.72 cents.
Answer:
Pie chart
Step-by-step explanation:
Given that a professor has kept records on grades that students have earned in his class
He wants to examine the percentage of students earning the grades A, B, C, D, and F during the most recent term,
We have to find which kind of plot could he make
Box plot gives comparison for interval of scores this is to some extent helpful to find out the percentage of students getting a range of scores
Timeplot is irrelevant here. Dot plot will not be of much use.
Histogram is to some extent useful as box plot
But the best one is pie chart giving easy visual comparison for various grades A, B,C,D,E and F
Answer:
B. 1 and -2
Explanation:
First, add up the equations:
x-x+3y+y=4
4y=4
y=1
Now, plug y into any of the original equations above and solve for x:
-x+1=3
-x=2
x=-2
Therefore, the answer is B. 1 and -2