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netineya [11]
3 years ago
9

Please quick problem :)

Mathematics
1 answer:
katen-ka-za [31]3 years ago
7 0
Well find the unit rate first 8 pm to 12 o'clock is 4 hours so -16.8/4=-4.2 degrees per hour since 8. So 1 hour later it would be 0-4.2=-4.2 degrees.
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Over the last three evenings Lucy received a total of 122 phone calls at the call center. The first evening she received 10 fewe
Zanzabum

Answer:

<em>SOLUTION: Over the last three evenings, Heather received a total of 109 phone calls at the call center. The third evening, she received 4 times as many calls as the second evening</em>

4 0
3 years ago
Please Help <br> Write a system of linear Inequalities to represent each graph.
docker41 [41]

Answer:

\left\{\begin{array}{l}5x-y-7\le 0\\2x+3y-9\ge 0\end{array}\right.

Step-by-step explanation:

1. Blue region. The boundary blue line passes through the points (0,-7) and (3,8), then its equation is

\dfrac{x-0}{3-0}=\dfrac{y+7}{8+7},\\ \\15x=3(y+7),\\ \\5x=y+7,\\ \\5x-y-7=0.

This line is solid, so the sign for the inequality should be with the notion "or equal to".

From the diagram you can see that the origin belongs to the blue region, then its coordinates satisfy the inequality. Thus,

5x-y-7\le 0.

2. Green region. The boundary green line passes through the points (6,-1) and (0,3), then its equation is

\dfrac{x-0}{6-0}=\dfrac{y-3}{-1-3},\\ \\-4x=6(y-3),\\ \\-2x=3y-9,\\ \\2x+3y-9=0.

This line is solid, so the sign for the inequality also should be with the notion "or equal to".

From the diagram you can see that the origin doesn't belong to the blue region, then its coordinates satisfy the inequality. Thus,

2x+3y-9\ge 0.

3. The system of linear inequalities that represents these graphs is

\left\{\begin{array}{l}5x-y-7\le 0\\2x+3y-9\ge 0\end{array}\right.

6 0
3 years ago
A brand new car is purchased for $45000 and depreciates by 8% per year. How much is it worth after?
RideAnS [48]
I=prt
i=(45000)(0.08)(1)
i=3600
depreciation= $3600/y
8 0
3 years ago
Work out the area of this semi circle
Phantasy [73]

Answer:

15.71

Step-by-step explanation:

10*3.142=31.42

31.42/2=

15.71

8 0
3 years ago
Read 2 more answers
The question is located below and the answers are:
Sindrei [870]
I thing it c


hope you got it right
5 0
3 years ago
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