It was 9/20 ..
1 answer:
Answer:
Step-by-step explanation:
We want probability that 1st is girl AND 2nd is girl as well.
In probability "AND" means multiplication and "OR" means "addition".
<u><em>We find the probabilities separately and multiply them together, since "AND".</em></u>
<u><em /></u>
- P(girl from 7th grader) = number of girl 7th grader/total number of 7th grader
=9/10
- P(girl from 8th grade) = number of girl in 8th grade/total number of 8th grader
=2/4
P(both girls) = 9/10 * 2/4 =9/20
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Answer: DA:FA=KE:EF, DF:DA=KF:KE and FA:DA=EF:KE are correct.
Explanation: Since, and
are similar triangles.
Because, and
(because EA and KD are parallels. And,
is common angle for these triangles.
Therefore, according to the property of similar triangles.
FE:EK= FA:AD, FE:FK=FA:FD and DF:DA=KF:KE .
Thus, first, second and third options are correct.
Using proportions, the ratios are given as follows:
a) 9:196.
b) 27:2744.
c) 3:14.
<h3>What is a proportion?</h3>A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Considering the standard ratio of 3:14 units, we have that:
- The area is given in units squared, hence the ratio will be of
.
- The volume is given in cubic units, hence the ratio will be of
.
- The width is also given in units, hence the ratio is also of 3:14.
More can be learned about proportions at brainly.com/question/24372153
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