Yes it should be a negative nine not a positive nine
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Answer:
18b − 2 = 90 is the equation that can be used to find the number of b boxes Crystal bought.
We have A number of apples, each purchased at 15 cents.
We can, thus, calculate the total cost of apples as follows:
Total cost of apples = 15A cents
We have B number of bananas, each purchased at 10 cents.
We can, thus, calculate the total cost of bananas as follows:
Total cost of bananas = 10B cents
Now, the total cost of purchases can be calculated by adding the amount paid for both types (apples and bananas) as follows:
Total cost = cost of apples + cost of bananas = 15A + 10B cents
The answer is x = 78/5
<span>(1/5) (5x + 12) = 18
</span>
Multiple both sides by 5:
<span>5 * (1/5) (5x + 12) = 5 * 18
5x + 12 = 90
Subtract 12 from both sides:
5x + 12 - 12 = 90 - 12
5x =78
Divide both sides by 5:
5x/5 = 78/5
x = 78/5</span>
Answer:
35+65+80=180
Step-by-step explanation:
the total interior angle of a triangle is 180