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tensa zangetsu [6.8K]
3 years ago
14

A total of 243 adults and children are at a movie theater. There are 109 more adults than children in the theater. If eh represe

nts the number of adults and b represents the number of children, which system of equations could be used to find the number of adults and the number of children in the theater?
Mathematics
1 answer:
Marina86 [1]3 years ago
6 0
The system should look like this:

eh + b = 243
eh - b = 109
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3 years ago
Solve the system of equations. 5x y = 9 3x 2y = 4 (−2, 5) (1, 4) (2, −1) (4, −4)
kobusy [5.1K]

The solution of the system of equations that is given is (2,-1).

Given a system of equations are 5x+y=9 and 3x+2y=4.

A system of linear equations (or linear system) is a collection of one or more linear equations involving the same variables.  A solution to a linear system is an assignment of values to the variables such that all the equations are simultaneously satisfied.

The given equations are

5x+y=9    ......(1)

3x+2y=4  ......(2)

Here, the substitution method is used to solve the system of equations.

Find the value of y from equation (1) by subtracting 5x from both sides.

5x+y-5x=9-5x

y=9-5x

To find the value of x substitute the value of y in equation (2).

3x+2(9-5x)=4

Apply the distributive property a(b+c)=ab+ac as

3x+2×9-2×5x=4

3x+18-10x=4

Combine the like terms on the left side as

-7x+18=4

Subtract 18 from both sides and get

-7x+18-18=4-18

-7x=-14

Divide both sides by -7 and get

(-7x)÷(-7)=(-14)÷(-7)

x=2

Substitute the value of x in equation (1) and get

5(2)+y=9

10+y=9

Subtract 10 from both sides

10+y-10=9-10

y=-1

Hence, the solution of system of equations 5x+y=9 and 3x+2y=4 is (2,-1).

Learn more about system of equations from here brainly.com/question/13729904

#SPJ4

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2 years ago
The student enrollment of South High School was 1,350 students in 1995 and increased by 15% per year until 2010. Approximately h
vlabodo [156]

Answer: A.

Step-by-step explanation:

5 0
2 years ago
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The principal P is borrowed at a simple interest rate are for a period of time T. Find the loans future value A, or the total am
Xelga [282]

Answer:

The total amount due after five years is $57,000.

Step-by-step explanation:

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\displaystyle A=P(1+rt)

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Evaluate. Hence:

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2 years ago
This figure shows circle Z with chords AB and RS . mAR=55° mRB=66° AB=8 m RS=8 m What is mRS?
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M AR = 55°
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Like AB=8 m =RS →m RS = m AB

m AB = m AR + m RB
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m RS = m AB
M RS = 121°

Answer: m RS is 121°
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3 years ago
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