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Verizon [17]
3 years ago
14

The numbers of dots in the four triangular arrays form a sequence...​

Mathematics
1 answer:
wlad13 [49]3 years ago
4 0

Answer:

B

Step-by-step explanation:

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A survey revealed that 60% of people are entertained by reading books, 50% are entertained by watching TV, and 20% are entertain
Rainbow [258]

Question seem incorrect because 60%,50% and 20% sum up to more than a 100% therefore we've made a little correction

Answer:

0.8

Step-by-step explanation:

Probability = number of favorable outcomes/number of outcomes

Given that 30% are entertained by reading books

50% are entertained by watching TV

20% are entertained by reading books and watching TV

The probability that a person will be entertained by books or TV =

30/100+50/100= 3/10+5/10

=8/10

=0.8

4 0
3 years ago
It takes me 12 minutes to run 2 kilometers. How long will it take me to run 10,000 meters?
galina1969 [7]
60min or 1 hour

Because 2km is equal to 2000m
Therefore you multiply 12 min by 5 (because 2000m x 5 is 10000m)

7 0
3 years ago
Solve for X: 3(x+1)=-2(x-1)-4
jarptica [38.1K]

Answer

X= -1

Step-by-step explanation:

7 0
3 years ago
Graham recruited student volunteers to participate in his dissertation study. He set up several times for students to come to a
mart [117]

Answer:

Sampling bias

Step-by-step explanation:

Bias refers a prominent problem in statistical analysis whereby one or more analytical factor are favored than the other during an analysis which should be made random. The problem. With Graham's dissertation study is the fact that he failed to randomlyvplace his subjects or observation in the study groups, favoring a particular group with non random subset. When randomization is ejected or missing from an analysis or study, it becomes less and less representative. Here, allotting early Arrivals Into the treatment group has introduced a sampling bias as those who came later, this will also leads to less reproducibility of experiment.

6 0
3 years ago
Find the inverse of the function.
asambeis [7]

Answer:

A) f^{-1}(n)= (n+2)^3

Step-by-step explanation:

f(n) = \sqrt[3]{n} -2

y = \sqrt[3]{n} -2

y = n^{1/3}-2

n = y^{1/3} -2

n + 2 = y^{1/3}

y = (n + 2) ^3

f^{-1}(n) = (n + 2)^3

Hope this helps!

7 0
3 years ago
Read 2 more answers
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