Answer:
hello :
Step-by-step explanation:
the area of a circle is : A = π r² r : the radius
A = π (6)² = 36π (ft)² ........( answer : C)
Answer:
no
Step-by-step explanation:
Opposite numbers are the same distance from 0 on the number line, but in opposite directions. Steps I would follow:
- first, check the directions to make sure they are opposite,
- then read the digits, or count the tick marks or compare lengths with dividers or ruler or marks on a piece of paper to see if the distances are the same.
3 is not the opposite of -6
__
6 is the opposite of -6
Answer:
y= 12,800 mice
Step-by-step explanation:
y= 25,000 (1-.2)t
y= 25.000 (.8)3
1/2 * 5 = 2.5.
You would need 2.5 boxes to build 5 birdhouses.
Answer:
N=250
Step-by-step explanation:
"twice as many nickels as dimes" means N =2D [eq1]
"collection of nickels and dimes is worth $25" means
5N + 10D = 2500 [eq2]
(To avoid using decimal points, PLZ express everything in cents.)
Substitution (substitute N from eq1 into eq2]:
5(2D) + 10D = 2500
10D + 10D = 2500
20D = 2500
D = 125
N=2D [eq1 again]
N=2(125)
N=250
Check:
Is 5(250) + 10(125) = 2500 ?
1250 + 1250 = 2500 ?
2500 = 2500 ?yes