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mrs_skeptik [129]
3 years ago
14

what is the equation of the line that passes through the points (-2,1) and (1,10)? a) 3x-y=-7 b)3x-y=-5 c)3x-y=5 d)x 3y=-5

Mathematics
1 answer:
Ber [7]3 years ago
8 0
The answer is a.
Substitute (-2,1) and (1,10) into each answer. Only a is correct because you will get -7 from both points.
You might be interested in
-3x+10y=-60<br> 3x+5y=15
Verdich [7]

Answer:

x=10, y=-3

Step-by-step explanation:

solve by addition/elimination

6 0
3 years ago
Carla plumbing charges $25 for a service call and $28 per hour, h, for labor for any repair. The total cost , t, for a repair ca
Ulleksa [173]

Answer:

It took 5 hours

Step-by-step explanation:

Because 28 times 5 is 140 plus 25 for the call is 165.

4 0
3 years ago
Rita started the day with r apps then she deleted 5 apps and still had twice as many apps as Cora has .write and an equation tha
Elodia [21]

Answer:

r - 5 = 2c

r = 75

Step-by-step explanation:

To write an equation for the problem, we first need do declare the value of the number of apps cora has.

Let c = Cora's apps

r - 5 = 2c

r - 5 is used to indicate that Rita deleted 5 apps.

2c is used to represent the twice the number of apps Cora has.

Now you said that Cora had 35 apps.

Let's plug that into the equation.

r - 5 = 2c

r - 5 = 2(35)

r - 5 = 70

Now we transpose the -5 to the other side to leave r.

r = 70 + 5

r = 75

So if Cora has 35 apps, then Rita will have 75 apps.

3 0
3 years ago
Please help me on this I'am still stuck on it thank you all
brilliants [131]
77 is the median score for rhis propblem
7 0
3 years ago
Read 2 more answers
What is 4 to the -2 power divided by 4 to the 4th power
igomit [66]

Answer:

4 to the -2 power divided by 4 to the 4th power

\frac{ {4}^{ - 2} }{ {4}^{4} }  =  \frac{1}{( {4}^{2} \times  {4}^{4} ) }  =  \frac{1}{ {4}^{(2 + 4)} }  =  \frac{1}{ {4}^{6} }  =  \frac{1}{4096}\\

<h3>(1/4096) is the right answer.</h3>
7 0
3 years ago
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