3.14 = Pie
Answer:
549.78
Step-by-step explanation:
Given the formula \pi r^{2} =v
Replace the values, so it will be \pi 25(7)=v
v=549.78
Answer:
they both can be multiplied by 10 and both have more than one 0
Step-by-step explanation:
50*10=500
500*10=5000
sorry this is my first time answering a question so idk fully if its right -_-
0.1x+0.25y=29.8
How many dimes and quarters are in the container?
A.
123 dimes and 55 quarters
B.
114 dimes and 64 quarters
C.
102 dimes and 76 quarters
D.
98 dimes and 80 quarters
x+y=178
0.1x+0.25y=29.8
Solve x+y =178 for x
Add -y to both sides
x+y+-y=178+-y
x= -y+178
Substitute -y+178 for x in 0.1x+0.25y=29.8
0.1x+0.25y=29.8
0.1(-y+178)+0.25y=29.8
Simplify both sides of the equation
0.15y+17.8=29.8
Add -17.8 to both sides
0.15y+17.8+-17.8=29.8+-17.8
0.15y=12
Divide both sides by 0.15
0.15y/0.15= 12/0.15
y=80
Substitute 80 for y in x = -y+178
x= -y+178
x= -80+178
Simplify both sides of the equation
x= 98
Answer: D
x=98 and y= 80
I hope that's help !
and weighs
pounds. How many pounds of her weight is made up of fat? Round your answer to the nearest tenth.