The question asks to evaluate:
Following the PEMDAS order of operations, we can solve using the following steps.
STEP 1: Multiply the terms 2 and 8
STEP 2: Divide the terms -20 and 4
STEP 3: Add and subtract from left to right
ANSWER
Answer:
Jada fills her aquarium with water at a constant rate of 5cm/minute for 2 minutes. She then stops the water from running for 1 minute. After that, she started to fill the aquarium at a constant rate of 10cm/minute for another 2 minutes. After 5 minutes, she reduces the water running at a rate of 5cm for 2 minutes. After 7 minutes, she turns off the water and the water is at 25cm.
Answer: B: They have different perimeters but the same area.
Explanation:
For the rectangle on top, the perimeter (the lengths of all the sides added together) is 5+4+5+4=18. The area (the length of the base times the length of the height) = 5*4=20.
For the larger rectangle on the bottom, the perimeter would be 10+2+10+2=24. The area of this rectangle would be 10*2=20.
The two rectangles have the same area (20) but not the same perimeter.
Divide both sides by 5 to get t by itself, then you have your answer
