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marshall27 [118]
2 years ago
14

I only need help with #23

Mathematics
1 answer:
Anton [14]2 years ago
6 0

Answer:

23.  y = 2x - 3

Step-by-step explanation:

Slope m = (y2-y1)/(x2-x1)

Using coordiates (2,1) and and (1, -1)

m = (-1 - 1)/(1 - 2) = (-2)/(-1) = 2

then y = mx + b

Using coordinates (1, -1) then

-1 = 2(1) + b

-1 = 2 + b

b = - 3

so y = 2x - 3

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What is the answer i'm having trouble :( click the picture
Vikentia [17]

Step-by-step explanation:

So 2 pints = 1 quart

She need 3 quart

so 2 pints × 3 = 1 quart × 3

6 pints = 3 quart

...

The she need 6 pints which is

2 cups = 1 pint

She need 6, so mutiply with 6

2 cups × 6 = 1 pint × 6

12 cups = 6 pints

Then this is the answer, you got

12 cups = 6 pints = 3 quart

She need 12 cups of water to make fruit punch

5 0
2 years ago
The equation of line A is y = 7x + 12. Line B is perpendicular to line A and passes through the point . What would be the soluti
max2010maxim [7]
Since B is perpendicular to A. We can say that the gradient of B will be -1/7 (product of the gradients of 2 perpendicular lines has to be -1).
Now we know that the equation for B is y=-(1/7)x + c with c being the y intercept.
Since the point isnt specified in the question, we could leave the equation like this.
But if there is a given point that B passes through, just plug in the x and y values into their respective places and solve to find c. That should give you the equation for b.
Now, to find the solution of x, we have 2 equations:
1) y=7x+12
2)y=-(1/7)x+c

In this simultaneous equation we see that y is equal to both the expressions. So,
7x+12=-(1/7)x+c

Now, since the value of c is not found, we cannot actually find the value of x, but if we would find c, we could also find x since it would only be a matter of rearranging the equation.
And there you go, that is your solution :)
3 0
3 years ago
How do I solve for x in the first two?
iragen [17]

Answer: X= 7.55cm

Step-by-step explanation:

7 0
3 years ago
In a city, the distance between the library and the police station is 3 miles less than twice the distance between the police st
deff fn [24]
The distance between the police station and the fire station is x.
The distance between the library and the police station is 3 miles less than twice the distance between the police station and the fire station, so it is 2x-3. This distance is equal to 5 miles.

2x-3=5 \\
2x=5+3 \\
2x=8 \\
x=\frac{8}{2} \\
x=4

The police station and the fire station are 4 miles aparat.
5 0
3 years ago
Read 2 more answers
Problem 2
Nezavi [6.7K]

Answer:

$109.27

Step-by-step explanation:

100 + 90 = 190

54/100 X 190 = 102.60

100 + 6.5 = 106.5

102.60/100 X 106.5 = 109.269

monetary unit round to 2dp

109.27

4 0
2 years ago
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