Answer: Option A.
Step-by-step explanation:
1. The formula for caculate the perimeter of a rectangle is:
Where is the lenght and is the width.
2. You must substitute the expression of the perimeter and the expression of the length given in the problem, into the equation and solve for the width. Therefore, you obtain that the width is:
3. The answer is the option A.
Answer:
x < 7
Step-by-step explanation:
-8x + 40 > -16
-8x > -16 - 40
x < -56/-8
x < 7
(when changing sides of neg. multipliers, you need to change the sign side, dont fall for that common mistake)
The final discounted price is $18.6
Step-by-step explanation:
In this problem we have to decrease the value of $20 by 7%.
First of all, we have to calculate the 7% of $20. We can do it as follows:
This means that the 7% of $20 is 1.4$.
Now we want to decrease the original value by 7%, so we calculate the difference:
So, the final discounted price is $18.6
Learn more about percentage:
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Answer:
0, it's a line parallel to the x-axis
Step-by-step explanation:
Answer:
1012
Step-by-step explanation:
She eats 1012 because:
If she eats 45 in 2 minutes then she eats 22.5 in 1 minute.
This is because 45 ÷ 2 = 22.5
Sarah eats blueberries for 45 minutes so we multiply 22.5 by 45
22.5 × 45 = 1012.5
She ate 1012 full berries.