Let the marks of the students in class 1 be
the average of these 12 marks is 90, so
which means
similarly, let
be the marks of the students in the second class,
so
which means
The 32 students averaged:
Answer:
third one down
Step-by-step explanation:
Answer:
46 terms
Step-by-step explanation:
a₁=b, a₂₁= bₙ, d₁=9, d₂=4
n=?
---------------
a₂₁= a₁+20d₁= a₁+20*9= a₁+180
bₙ= b₁+(n-1)d₂= a₁+4(n-1)
a₁+4(n-1)=a₁+180
4(n-1)=180
n-1= 180/4
n-1= 45
n=46
Answer:
(a) seems to be the closest to being correct of these five statements.
Step-by-step explanation:
Let's go through the list of possible descriptors:
a) There are no outliers. This seems to be the response most likely to be correct.
b) The distribution is not skewed left. It's skewed right.
c) The center is not 44. From what I see, the center is 48.
d) This distribution is not bimodal; it does not have two peaks.
d) The spread is not 38 to 67; it's 29 to 67.
4) The first and second terms for both ratios need to be in the same order.
Step-by-step explanation:
Given ratio is:
16:36
In order to find any ratio equivalent to given ratio, the ratio can be divided by a number or multiplied to a number.
The equivalent ratio that is given: 72:32
If we multiply the given ratio by 2: We get 32:72
So,
Looking at the options we can conclude that the right answer is
4) The first and second terms for both ratios need to be in the same order.
Keywords: Ratio, Fractions
Learn more about ratios at:
#LearnwithBrainly
