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Mamont248 [21]
3 years ago
10

Equation of a line...please help??

Mathematics
1 answer:
mezya [45]3 years ago
8 0
The equation of a line is y=mx+b
To find the gradient you calculate the change in Y/change in X.
To find the y-intercept you should plug it in a graphic calculator. 

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A string is cut into two pieces in the ratio 2 : 7. The difference between the lengths of the two pieces is 90cm. Find the lengt
Nataly_w [17]

Answer:the length of the shorter string= 36cm

Step-by-step explanation:

Let us assume the lengths are 2x and 7x  since thery are in the ratio of 2 :7

 Such that Length of the shorter string = 2x

and the longer string = 7x  so that  the difference in Length which is 90cm can be expressed as

7x- 2x= 90

5x= 90

x 90/5

x= 18

shorter string = 2 x = 2x 18= 36cm

Longer strring = 7x 18=126cm  

       

5 0
3 years ago
How many solutions does the system have?
Murrr4er [49]

Answer:

Infinitely many solutions

Step-by-step explanation:

8 0
3 years ago
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Betty sets up a lemonade stand and charges $1 per glass. It cost her $50 to set up the stand. Which function gives the profit, p
Maksim231197 [3]
If you would like to find the function that gives the profit Betty makes by selling a number of glasses of lemonade, you can find this using the following steps:

p ... profit
g ... glasses of lemonade

f(g) = p = g * $1 - $50

The correct result would be f(g)<span> = g * $1 - $50.</span>
5 0
3 years ago
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Please help me with this question bellow.
Vera_Pavlovna [14]

Answer:

they are just multiplying thr numbers on top for exsample 42÷6=7

Step-by-step explanation:

you should see what numbers dose the bottom numbers have in common and multiply by 15.

3 0
2 years ago
What is f(-2) for f(x) = x^2+3x=5
leva [86]

f(x) = x^2+3x+5

f(-2) = (-2)^2 +3(-2)+5

f(-2) = 4-6+5

f(-2) = -2+5

f(-2) = 3

4 0
3 years ago
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