The equation has one solution, x = -7.
Answer:
bigger number is 18
smaller number is 6
Step-by-step explanation:
let x be the bigger number and y the smaller
the sum of two numbers is the same as four times the smaller
x+y=4y
x=4y-y
x=3y--------i
if twice the larger is decreased by the smaller, the result is 30
2x-y=30----ii
substituting i for x in ii
2(3y)-y=30
6y-y=30
therefore
5y=30
y=30/5
y=6------iii
substituting iii for y in i to solve for x gives
x=3*6
=18
Answer:
Perimeter is 269.34m
And the area is 11,256,840 Sq m
Answer:
7)
8)
Step-by-step explanation:
7) The equation of the straight line passing through the ordered pair (-3,5) and (3,-5) is given by
⇒ -3(y - 5) = 5(x + 3)
⇒ -3y + 15 = 5x + 15
⇒ 5x + 3y = 0
⇒ (Answer)
8) The equation of the straight line passing through the ordered pair (5,7) and (11,16) is given by
⇒ 2(y - 7) = 3(x - 5)
⇒ 2y - 14 = 3x - 15
⇒ 3x - 2y - 1 = 0
⇒ (Answer)
Answer:
10x-6y-11
Step-by-step explanation:
3(3x+y) = 3(3) +×-3y=-2
9x + 3y = 9 + x -3y =-2
9x+x = -3y-3y =-2-9
10x = -6y =-11
10x-6y-11