She paid 5X cents in total. She sold 8(X -6). The profit was 450 cents.
So: 5X = 8(X-6) -450.
5X + 450 = 8X -48
3X = 402
X = 402/3 = 134. She bought 134 oranges.
Answer:
You thought you did well
Step-by-step explanation:
You think your grade may be good, but people may think it's bad
Answer:
Step-by-step explanation:the first one is 18. and the second one is 12. hope this helped. im not sure if its right but im pretty sure
Answer:
x =
Step-by-step explanation:
Square both sides.
y² = (2x + 1) / (x - 1)
Multiply both sides by (x - 1).
y²(x - 1) = 2x + 1
xy² - y² = 2x + 1
xy² = 2x + 1 + y²
xy² - 2x = 1 + y²
x(y² - 2) = 1 + y²
x =
Answer: 2.5 mL
Step-by-step explanation:
Given : A patient is given a solution containing 0.625 g of calcium carbonate.
i.e. Patient required calcium carbonate = 625 mg [∵ 1 g = 1000 mg]
Let x be the amount of solution ( in millimeters) given to the patients.
Ratio of amount of calcium carbonate (mg) to amount of solution (ml) =
If the calcium carbonate solution contains 1250 mg per 5 mL,
Then, Ratio of amount of calcium carbonate to amount of solution =
By using proportion we have :-
Hence, 2.5 mL solution were given to the patient.