Answer:
D
Step-by-step explanation:
πr^2
3.14*3^2
3.14*9
28.26
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Answer:
See below
Step-by-step explanation:
x=a-2by^2 Subtract 'a' from both sides
x -a = - 2 by^2 divide both sides by - 2b
(a-x)/2b = y^2 sqrt both sides
y = +- sqrt ( (a-x)/2b))
Step-by-step explanation:
Find the cost of a yardpiece
Distribute the 32 to the 4x and -2, so you have 128x-64-3x=5-(x+2), then you distribute the “-“ sign to x and 2 so on the right you have 5-x-2. All together you have 128x-64-3x=5-x-2. Combine like terms on both sides so you have 125x-64=-x+3. Add 64 to both sides so you got 125x=-x+67. Also add x on both sides, so your final equation is 126x=67. This doesn’t come out to an even number but it’s ok, your answer in decimal is about 0.532 rounded to the thousandths and if you want a fraction it’s simply 67/126. I’m sorry if this answer isn’t correct I did this in my head.
Answer:
Perry is correct, she covered the greatest area = 18 square units.
Step-by-step explanation:
Looking at the attached diagram, the shapes are rectangular and they are on grid or graph
Note that on a graph:
1 square box = 1 unit
Area of rectangle = Length × Width
For Karina
The Width = 3 units
The length = 4 units
The area which Karina covered = 3 units × 5 units
= 15 square units
For Perry
The Width = 9 units
The length = 2 units
The area perry covered = 9 units × 2 units
= 18 square units
Therefore, Perry is correct, she covered the greatest area = 18 square units.