Gradient= y1-y2/x1-x2
=(10-6)/(4-3)=4
y=4x+c
6=4(3)+c
c=-6
equation is D
13+6b=-5(7-6b) -- expand brackets
13+6b=-35+30b -- subtract 6b and add 35 to both sides
48=24b -- divide by 24
2=b
b=2
Answer:
Wut
Step-by-step explanation:
That is not a question try to read it again and put it in again or just use google lol.
17/18 is the right answer hope it helps
Answer:
<h3>
x = √70</h3>
Step-by-step explanation:
From ΔABD:
BD² + 7² = x² ⇒ BD² = x² - 49
Form ΔBCD:
BD² + 3² = BC² ⇒ BD² = BC² - 9
so:
BC² - 9 = x² - 49 ⇒ BC² = x² - 40
From ΔABC:
x² + BC² = (7+3)²
x² + x² - 40 = 10²
2x² = 140
x² = 70
x = √70
