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KIM
1 day ago
13

Twenty students compete in a school-wide marathon and each student is of comparable running ability. Of the 20 students, 15 were

boys and 5 were girls. What is the probability that boys will place 1st, 2nd, and 3rd in the marathon?
Mathematics
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Which lines are parallel? Justify your answer.
zzz [12365]

Answer:

Lines a and b are considered parallel due to their corresponding angles being equal.

Step-by-step explanation:

The corresponding angle postulate states that two lines are parallel when a transversal intersects them and their corresponding angles are congruent.

In this case, line a and line b are intersected by transversal e, with both corresponding angles measuring 110 (which are congruent), hence, according to the corresponding angle postulate, we can conclude that line a and line b are indeed parallel to each other.

8 0
3 months ago
Read 2 more answers
the product of two numbers is 450. the first number is half the second number. which equation can be used to find x, the greater
AnnZ [12381]
Xy = 450

y = x/2 => x=2y  plugging this into the first equation yields 2y*y=450 => y^2 = 225

y=15 since 15*15=225

x=2y therefore x=2*15 = 30 

x=30
y=15

I hope this is helpful to you 
4 0
1 month ago
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An instructor at a major research university occasionally teaches summer session and notices that that there are often students
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We aim to verify the assertion that generally, 10% of students repeat a course, leading us to this hypothesis setup: Null hypothesis: Alternative hypothesis. The most fitting choice for this scenario is: d) H0:p=0.1 vs. H1:p ≠ 0.1. For this case, the provided information includes: the number of students repeating the course, the selected sample size, and the estimated proportion of repeaters. We are testing the claim that generally, 10% of students retake classes, which will be validated through established hypotheses.
8 0
1 month ago
Billy Jo's school is selling tickets to a Fall Festival. On the first day of ticket sales the school sold 3 adult ticket and 8 s
PIT_PIT [12445]
Y = 6 Here’s a step-by-step explanation: On the initial day of ticket sales, the school sold 3 adult tickets and 8 student tickets for a total of $72. On the following day, the school collected $152 from 7 adult tickets and 16 student tickets. What is the price of a student ticket? Day 1: 3x + 8y = 72 Day 2: 7x + 16y = 152 This leads to a system of equations. By manipulating these equations, we find: Ultimately, y = 6. If you wish to continue from this point, substituting y into the equation will give the value for x.
6 0
2 months ago
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