Step-by-step explanation:
3 balloons + 2 cakes = £19
=> 9 balloons + 6 cakes = £57 (multiply by 3)
9 balloons + 6 cakes = £57
- (9 balloons + 3 cakes = £42)
=> 3 cakes = £15, 1 cake = £5.
Therefore 3 balloons + 2(£5) = £19,
3 balloons = £9, 1 balloon = £3.
Hence each balloon is £3 and each cake is £5.
Step-by-step explanation:
we solve for x
15x-(2/x)>1. /*x
15x^2 -2 > x. /-x
15x^2 -x -2 > 0
Solve the quadratic at zero
15x^2 -x -2=0
using the quadratic formula
x1,2 = [1+-sprt((-1)^2-4(15)(-2))]/2(15)
= [1+- sqrt (121)]/30
= [1+-11]/30
x1= 12/30= 2/5
x2= -10/30= -1/3
therefore this positive parabola is greater than zero or positive when
x< -1/3 and x> 2/5
Answer:
x is -3.5
Step-by-step explanation:
the steps are shown in the picture attached
Answer:
The answer is Parallelogram
Step-by-step explanation:
1 3/4p - 1 = 2 1/4p + 11
7p/4 - 1 = 9p/4 + 11
7p/4 - 9p/4 = 11 + 1
-2p/4 = 12
-p/2 = 12
-p = 24
p = -24
In short, Your Answer would be -24
Hope this helps!