I just solved it and I'm pretty sure its only one solution, I took the bottom equation multiplied it by -3 then i canceled out the equations and got 9. So that would make it C.
Here ya go.
-n - 6n + 4 = 53
(Combine like terms)
-7n + 4 = 53
-7n = 53 - 4
-7n = 49
n = -7
14 = 6n + 6 - 2n
(Combine like terms)
14 = 14n + 6
-4n = 6 - 14
-4n = -8
n = 2
Answer:
y = 1.2x + 770
Step-by-step explanation:
y = m*x + b
Equation One
y = mx + b
1370 = m*500 + b
Equation Two
y = mx + b
1730 = m*800 + b
Solution
1730 = 800*m + b
1370 = 500*m + b Subtract. The b's cancel
360 = 300 * m Divide both sides by 300
360/300 = m
1.2 = m
Now use the second equation to solve for b
y = 1730
x = 800
1730 = 1.2*800 + b
1730 = 960 + b Subtract 960 from both sides
b = 770
Answer:
1.3 repeating or 4/3
Step-by-step explanation:
Step-by-step explanation:
2 (yellow) / 3.5 (blue)
that means, out of 2+3.5 = 5.5 units 2 are yellow, and 3.5 units are blue.
now in a 3 / 4.5 ratio we have 3+4.5 = 7.5 units, where 3 units are yellow and 4.5 units are blue.
let's bring both ratios to the same denominator (bottom part of the fraction).
if we multiply 3.5 by 2 we get 7. and multiplying 4.5 by 2 gives us 9.
and the smallest common multiple of 7 and 9 is 63.
so, let's bring both fraction to .../63.
3.5 × 2 × 9 = 63
so, the ratio is
2×2×9/63 = 36/63
and
4.5 × 2 × 7 = 63
so, that ratio is then
3 × 2 × 7 / 63 = 42/63
now we can see clearly that the first ratio
2/3.5 = 36/63 has fewer units of yellow in the mix than the second ratio
3/4.5 = 42/63.
so, the second mixture is more yellow.