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icang [17]
2 years ago
7

Elvira was trying to find out the number of students in the courtyard during lunch. She doesn’t remember how many students were

there to start, but knows how many students there were at the end of the lunch period. These are her observations: · The original students were joined by four more students. · Those students were each joined by 2 students, multiplying the students by 3. · Half the students left. If there were 15 students at the end of the lunch period, which equation would help Elvira find how many students were in the courtyard at the beginning of lunch?
SOMEONE, ANYONE PLEASE HELP ME WITH THIS QUESTION :(
ANYONE CAN HELP IF THEY WANT, PLEASE!!!!
Mathematics
1 answer:
il63 [147K]2 years ago
4 0

Answer:

2x3=6+9=15?

Step-by-step explanation:

Im sorry if i didnt help.

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musickatia [10]

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Standard deviation:

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The probability that between 22 and 29 (inclusively) will have attempted to limit their cell phone use in the past will be :

P(22\leq x\leq29)=P(21

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5 0
3 years ago
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Kisachek [45]

Answer:

C. The cabinet

Step-by-step explanation:

The executive branch besides the president also includes the advisors that help the president make decisions.

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2 years ago
Solve each system by substitution
Ira Lisetskai [31]

Answer:

1. 2x + 3y =22

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C. (5,4)

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B. (3,0)

Step-by-step explanation:

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Step 1: Simplify both sides of the equation.

2x+12=22

Step 2: Subtract 12 from both sides.

2x+12−12=22−12

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Step 3: Divide both sides by 2.

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====================================================================

−5x−(2)(0)=−15

Step 1: Simplify both sides of the equation.

−5x−(2)(0)=−15

−5x+0=−15

(−5x)+(0)=−15(Combine Like Terms)

−5x=−15

−5x=−15

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3 years ago
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Is -33.1 a whole number
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Answer:

No

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