If #peaches = x and #plums = y we can write the following equations:
x+y=15
0.89x + 0.39y = 8.85
and x and y are whole numbers.
converting the first to x=15-y and plugging it into the second, you get
0.89(15-y) + 0.39y = 8.85 =>
13.35 - 0.89y + 0.39y = 8.85 =>
4.5 = 0.5y =>
y = 9
so x = 15-9 = 6
She bought 9 plums and 6 peaches.
Answer:
Two points this line can pass through <em>(1, 4/3) and (2, 8/3)</em>
Step-by-step explanation:
The equation of the line is written in the slope-intercept form,
y = mx + b
where m represents the slope
b represents the y-intercept
where the format of a point is (x, y)
<u>Given:</u>
- slope = 4 / 3
- equation: y = 4/3x
we can plug in a number for x to find y
<u>when x = 0,</u>
y = 4/3(0)
y = 0
<em>point: (0,0)</em>
<u>when x = 1,</u>
y = 4/3(1)
y = 4/3
<em>point: (1, 4/3)</em>
when x = 2,
y = 4/3(2)
y = 8/3
<em>point: (2, 8/3)</em>
Learn more about slope and y-intercept here: brainly.com/question/12763756
First can you change
2x + y = -12
To have y as the subject
Looks like y = ???
5t + 8c = 115
3t + 5c = 70
-15t - 24c = -345
15t + 25c = 350
C = 5
T = 15
Answer:
width is 12
the length is 21
I have done the first one hope you have gotten the method