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Sedbober [7]
2 years ago
14

During first semester, the ratio of the number of students in art class to the number of students in gym class was 2:7. However,

the art classes were really small, and the gym classes were large, so the principal changed students’ classes for second semester. In second semester, the ratio of the number of students in art class to the number of students in gym class was 5:4. If 75 students were in art class second semester, how many were in art class and gym class first semester?
Mathematics
1 answer:
lozanna [386]2 years ago
8 0

Answer:

fysf8qrqrdgfjgkyi

Step-by-step explanation:

dyfjgjhk

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3 years ago
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If two marbles are selected at random with replacing between draws, what is the probability that the outcome is red then yellow?
saul85 [17]

The probability that the outcome is red then yellow is 0.036.

Given that in a jar there are 8 red marbles, 1 yellow marble and 6 green marbles.

We are required to find the probability of obtaining a red then yelow marble if two marbles are drawn and replacement is used.

Probability is the calculation of finding the chance of happening a event among all the events possible. It lies between 0 and 1.

Probability=Number of items/ Total items.

Number of red marbles=8

Number of yellow marble=1

Number of green marbles=6

Total marbles=15

Probability of obtaining red marble=8/15

Probability of obtaining yellow marble=1/15 (Because replacing is there so the number of total marbles do not decrease)

Required probability=8/15*1/15

=8/225

=0.035555

After rounding off we will get 0.036.

Hence the probability that the outcome is red then yellow is 0.036.

Question is incomplete. The following line should be included in question:

A jar contains 8 red marbles , a yellow marble and 6 green marbles.

Learn more about probability at brainly.com/question/24756209

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8 0
1 year ago
Mary bought these art supplies: 5 paint brushes for $1.29 each, 10 dowel rods for $1.49 each, 2 jars of paste for $1.25 each, an
Rainbow [258]
The answer is D.$12.15

5(1.29)+10(1.49)+2(1.25)+4(6.00) =$47.85
$60-$47.85 = $12.15
5 0
2 years ago
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The length of the arc of one quadrant is equivalent to theâ _____ of a 90 degrees bend.
Ira Lisetskai [31]

Answer:

Developed Length

Step-by-step explanation:

A developed length is the length along the centre line of a circular shape.

From the question, the degree of bend is 90°

Also, from the question; the length of an arc of 1 quadrant.

1 quadrant = 90°

And the degree of bend = 90° (from the question)

So, it's safe to say 1 quadrant = the degree of bend = 90°

A small change in 90° will move change the quadrant to another quadrant.

So, at exactly 90° (or other multiples of 90° which are 180°, 270° and 360°), it is at its developed length.

8 0
3 years ago
Someone tell me the answer for this please i literally wanna scream thank you
Lerok [7]

Answer:

B

Step-by-step explanation:

Because it starts at 10 and ends at 22

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3 years ago
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