Answer: k = 200/3
Step-by-step explanation:
If a variable, a varies directly with a variable, c, it means that as a increases, c increases and as a decreases, c decreases.
Also, If a variable, a varies inversely with a variable, b, it means that as a increases, b decreases and as a decreases, c increases.
The variable c varies directly with a and inversely with b. We would introduce a constant of variation, k. Therefore
a = kc/b
If c = 3/20 when a = 2 and b =5, then
2 = (k × 3/20)/5 = 3k/100
Cross multiplying, it becomes
3k = 100 × 2 = 200
k = 200/3
Answer:
The price dropped by $5.45.
Step-by-step explanation:
Initial price = $50.00
Less 10 % = -5.00
1st sale price = 45.00
Less 10% = -4.50
2nd sale price = 40.50
Plus 10 % = +4.05
Final price = $44.55
Change in price = final - initial
= 44.55 - 50.00
= -$5.45
The price dropped by $5.45.
4 miles
8 miles per hour
4/8=1/2
skated for 1/2 hour
1/2 times 60=30
4:15+30=4:45
answer is D
Answer:
-75, -73, -71
Step-by-step explanation:
<u>Let the numbers be:</u>
<u>The sum:</u>
- x + 2 +x + x+2 = -219
- 3x = -219
- x = -73
<u>The numbers:</u>
Answer:
Probably of getting both = 3/10 *100 = 30%
Step-by-step explanation:
According to the given statement we have four possible combinations:
Blue pants/white shirt, tan pants/white shirt, blue pants/blue shirt, blue pants/white shirt
.probability of getting tan pants = 2/4
probability of getting white shirt = 3/5
probably of getting both = 2/4 x 3/5 = 6/20 = 3/10
probably of getting both = 3/10 *100 = 30% ...
