X = 1/5 ÷ 3/4
x = 1/5 × 4/3
x = 4/15
the answer is C
Answer:
Step-by-step explanation:
Given:
The perimeter of a rectangle is given as,
We are asked to express this in terms of 
.
Add -2l both sides and simplify. This gives,
Now, we divide both sides by 2 to get an expression in terms of . This gives,
<h2>|| <u>Question</u> ||</h2>
The ratio of points scored by Jennie, Sarah, and Sadie in the basketball games played last week was 1:3:5. If jenny scored 10 points last week, what was the total number of points scored by these three girls?
<h2>|| <u>Answer</u> ||</h2>
The ratio of points scored by Jennie, Sarah, and Sadie in the basketball games played last week was 1:3:5.
jenny scored 10 points last week game.
=> 1x, 3x, 5x.
=> 1(10), 3(10) , 5(10)
=> 10, 30, 50
Therefore, The points scored by Jennie, Sarah, and Sadie in the basketball game played last week was 10, 30, 50
The total number of points scored by these three girls are:- 10+30+50 = 90
Given: all selections are without replacement
Let D=event that chip is defective
N=event that chip is normal
note that D and N are complementary.
x=undefined event
(a) Second is defective
Probability for second chip to be defective
P(xD)=P(ND)+P(DD)
P(ND)=(80/100)*(20/99)=1600/9900
P(DD)=(20/100)*(19/99)=380/9900
=>
P(xD)=(1600+380)/9900=1980/9900=1/5
(b) All three are defective
P(DDD)=(20/100)*(19/99)*(18/98)=19/2695
Note: in probabilities, it is preferable to use the exact values (i.e. fractions).
