Circumference of a circle =
They are all multiplied by each other
r = radius
we know our radius is 40
and...
= 3.14
so we would use this expression 3.14 x 40 x 2 As a added bonus ill solve it for you :P
3.14 x 40 x 2 = 251.2
The circumference of this ice skating rink is 251.2 feet
Answer:
y= 3/5x - 1
+1 +1
y+1 = 3/5x
((y+1)5) = 3x
divide by 3 both sides
x= (y+1)5 / (3)
hope that helps
Step-by-step explanation:
20% of $19,400 is $3,880
($19,400 / 5 = $3,880)
subtract 20% from the original value
($19,400 - $3,880 = $15,520)
it's now worth $15,520
Answer:
4(2x+1)
Step-by-step explanation:
Add the expressions 3x-2 and 5x+6
which is 8x+4
since every one of the answers are in distributive form, just take the GCF (Greatest Common Factor) out of both
Answer:
0.97
Step-by-step explanation:
Given that a homeowner has two smoke detector alarms installed, one in the dining room (adjacent to the kitchen) and one in an upstairs bedroom (above the kitchen). If cooking produces smoke in the kitchen, the probability of setting off the dining room alarm (D) is .95. The probability of setting off the bedroom alarm (B) is .40.
Both alarms are independent of each other.
Probability for smoke detection=P(any one alarm rings)
=P(Kitchen alarm sets off)+P(bed room alarm sets off)-P(Both sets off)
Since both are independent
P(Both) = 
Probability for smoke detection
= 0.95+0.40-0.38
=0.97
