4% is the answer j had it
Answer:x -y -5 =0
Step-by-step explanation:
The answer is A. Hope this helped
Answer:
cost of knife = £5.52
Step-by-step explanation:
Assume:
Cost of Knife = a
Cost of Spoon = b
a = 3b ----------------------(1)
12a + 9b = £82.80 -------(2)
Substitute equation (1) in equation (2)
12 * (3b) + 9b = £82.80
36b + 9b = £82.80
45b = £82.80
b = £1.84
Therefore, cost of knife = a = 3 * £1.84 = £5.52
Answer:
x = 2
Explanation:
![\frac{3x-1}{5} =\frac{x+1}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B3x-1%7D%7B5%7D%20%3D%5Cfrac%7Bx%2B1%7D%7B3%7D)
First, make sure they both have common denominators ( 15 )
5 × 3 = 15 and 3 × 5 = 15
Whatever you do to the denominator you have to apply to the numerator. So, multiply the numerator and denominator of the first fraction by 3.
=
Next, multiply the numerator and denominator of the second fraction by 5.
= ![\frac{5(x+1)}{15}](https://tex.z-dn.net/?f=%5Cfrac%7B5%28x%2B1%29%7D%7B15%7D)
Now we have: ![\frac{3(3x-1)}{15} =\frac{5(x+1)}{15}](https://tex.z-dn.net/?f=%5Cfrac%7B3%283x-1%29%7D%7B15%7D%20%3D%5Cfrac%7B5%28x%2B1%29%7D%7B15%7D)
Use distributive property on the numerators of both fractions.
![\frac{9x-3}{15} =\frac{5x+5}{15}](https://tex.z-dn.net/?f=%5Cfrac%7B9x-3%7D%7B15%7D%20%3D%5Cfrac%7B5x%2B5%7D%7B15%7D)
Since the denominators are equal we can ignore them for now and find x.
9<em>x </em>- 3 = 5<em>x</em> + 5
We need to move like terms to different sides to isolate x. First, we can subtract 5<em>x</em> from both sides.
9<em>x</em> - 5<em>x</em> - 3 = 5<em>x</em> - 5<em>x</em> +5
4<em>x</em> - 3 = 5
Then, we can add 3 to both sides to cancel out the -3.
4<em>x</em> - 3 + 3 = 5 + 3
4<em>x</em> = 8
Finally, to find x we divide both sides by 4.
4x ÷ 4 = 8 ÷ 4
x = 2