<u>Answers</u>
-x + 5y = 4 ⇔ slope 1/5, y-intercept 4/5
5y - x = 15 ⇔ slope: 1/5, y-intercept: 3
2y - 3x = 7 ⇔ slope: 3/2, y-intercept: 7/2
2y = 5x + 7 ⇔ slope: 5/2, y-intercept: 7/2
<u>Explanation</u>
-x + 5y = 4
5y = x + 4
y = (1/5)x + 4/5 slope 1/5, y-intercept 4/5
5y - x = 15
5y = x + 15
y = (1/5)x + 3 slope: 1/5, y-intercept: 3
2y - 3x = 7
2y = 3x + 7
y = (3/2)x + 7/2 slope: 3/2, y-intercept: 7/2
2y = 5x + 7
y = (5/2)x + 7/2 slope: 5/2, y-intercept: 7/2
3(12 - 2n) = 36
36 - 6n = 36
-6n = 0
n = 0 <== ur number
Using multiplication, we get 5.8 x 8.3= 48.14
B) 6 boys
18 divide by 2 = 9 (girls)
so
12 divide by 2 = 6 (boys)
hope this helps
Answer:
second equation :
( 20x² — 2xy — 42y² )
Step-by-step explanation:
expand the two brackets.
