Answer:
20
Step-by-step explanation:
The cost of the x mangoes was ...
c = 10(x/4)
The revenue from the sale of mangoes was ...
r = 20(x-5)/5
The profit is the difference between revenue and cost:
10 = r - c = 20(x -5)/5 -10(x/4) = 1.5x -20 . . . . substitute and simplify
30 = 1.5x . . . . . add 20
20 = x . . . . . . . .divide by 1.5
The trader bought 20 mangoes.
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<em>Check</em>
He paid 20(10/4) = 50 naira. He sold the 15 good mangoes for 20/5(15) = 60 naira, so made a 10 naira profit.
Answer:
We can go step by step for this problem by listing out how many blocks for each stack.
Stack 1: 4
Stack 2: 4+9=13
Stack 3: 13+4=17
Now we can sum up the number of blocks in each stack to get 4+13+17=34. The answer is 34.
Answer:
O C.
Step-by-step explanation:
To find a missing side length, use Pythagorean Theorem:
a^2 + b^2 = c^2 where a = 5 b = x and c = 6
5^2 + x^2 = 6^2
25 + x^2 = 36
x^2 = 36 - 25
x^2 = 11
x = 3.3
The value of x is sqrt rt 11
Answer:
5
Step-by-step explanation:
A function is equal to its inverse on the line y = x. So, we can find the required value of x by substituting for y:
y = 2x -5
x = 2x -5 . . . . substitute y = x
5 = x . . . . . add 5-x to both sides