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inna [77]
4 years ago
15

Candice needs a plumber and must decide between 2 companies. For a service visit, Company A charges $60 to send a plumber plus $

45/h. Company B charges $70 to send a plumber plus $35/h. The graph that models this situation is shown here.
According to the graph, what is the cost when the two plumbers have worked the same amount of time and cost is the same?

Mathematics
1 answer:
Ber [7]4 years ago
7 0
Since they meet at the $105 mark the answer would be $105
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State the correct polar coordinate for the graph shown:
ANTONII [103]

Answer:

Solution : ( - 8, - 5π/3 )

Step-by-step explanation:

There are four cases to consider here, the first two with respect to r > 0, the second two with respect to r < 0. For r < 0 we have the coordinates ( - 8, 60° ) and ( - 8, - 300° ) . - 300° in radians is - 5π/3, and hence our solution is option d. But let me expand on how to receive the coordinates. Again r is the directed distance from the pole, and theta is the directed angle from the positive x - axis.

<em />

So when r is either negative or positive, we can tell that this point is 8 units from the pole. Therefore - r = - 8 in both our second cases ( we are skipping the first two cases for simplicity ). For r < 0 the point will lay on the ray pointing in the opposite direction of the terminal side of theta.

Our first coordinate is ( - 8, 60° ). Theta will be 2 / 3rd of 90 degrees, or 60 degrees, for - r. Respectively the remaining degrees will be negative, 360 - 60 = 300, - 300. Our second point for - r will thus be ( - 8, - 300° ) . - 300° = - 5π/3 radians, and our coordinate will be ( - 8, - 5π/3 ).

8 0
3 years ago
X = 5 and y = 8 plz help
Galina-37 [17]
Hi,

To solve this expression, use the inputs of the x and y values to calculate the expression and result with an output. 

x=5
y=8

Plug in values:

5 (5 + 2) + 5^(2) + 8 

Evaluate:

5 (5 + 2) + 5^(2) + 8  = 5 ( 7 ) + 5^(2) + 8 

5 (7) + 25 + 8 

35 + 25 + 8 

=68


Your final answer is 68. 



Faith xoxo


7 0
3 years ago
2-2x&lt;4? <br> Can someone please help me!
yKpoI14uk [10]

Answer:

x > -1

Step-by-step explanation:

To solve the inequality, use the same rules as solving equations.

2 - 2x < 4

-2x < 2

x > -1

Since you divide by a negative, you must switch the sign < to >.

6 0
3 years ago
8. Carol and Curtis are running a half mile race. Curtis finished the race in 11 minutes and 8
MatroZZZ [7]

Answer:

Step-by-step explanation:

curtis is 22 min 16 sec carol is 18 min 6 sec

4 mins and 10 seconds it the difference

7 0
3 years ago
Factor 7y^2-21y^3 completely
maksim [4K]
Well you can take out a 7 and y^2 since both have it.
-3y should be your answer because you got rid of 7y^2 and then you have to divide -21/7 to get -3. Also if you take y^2 from y^3 you are left with just a "y".
8 0
3 years ago
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