35kg - a mass of sugar syrup
30% of 35kg it's a mass of sugar
30% = 30 : 100 = 0.3
30% of 35kg = 0.3 · 35kg = 10.5kg - a mass of sugar
Add xkg water. Then we have (35 + x)kg of sugar syrup and still 10.5kg of sugar.
10.5kg is 25% of (35 + x)kg .
(35 + x) -- 100%
10.5 -- 25% <em>multiply both sides by 4</em>
42 -- 100%
Therefore we have the equation:
35 + x = 42 <em>subtract 35 from both sides</em>
x = 7
<h3>Answer: We should add 7kg of water.</h3>
Answer:
f(-6) = -9
Step-by-step explanation:
here, you substitute -6 for x in the function
f(x) = 3x + 9
f(-6) = 3(-6) + 9
f(-6) = -18 + 9
f(-6) = -9
Answer:
200% increase
Step-by-step explanation:
Answer:
2,5
Step-by-step explanation:
2 - 4 = 2
2 - 7 = 5
So the answer is 2,5
I think.
Y = 3.75x...y = 12
12 = 3.75x
12/3.75 = x
3.2 = x
(3.2,12)