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xenn [34]
4 years ago
12

Solve the system of equations.

Mathematics
2 answers:
Leno4ka [110]4 years ago
7 0

Answer:

x = 7

y =  0

Step-by-step explanation:

Substituting x = - 6y + 7 in 2x - 9y = 14, we get:

= 2(- 6y + 7) - 9y = 14

= - 12y + 14 - 9y = 14

= - 21y = 14 - 14

= y = 0

Putting y = 0 in x = - 6y + 7, we get:

= x = - 6 * (0) + 7

x = 7

Hope this helps!

Alenkasestr [34]4 years ago
4 0

Step-by-step explanation:

<u>Step 1:  Substitute x from the second equation into the second one</u>

2x - 9y = 14

2(-6y + 7) - 9y = 14

(2 * -6y) + (2 * 7) - 9y = 14

-12y + 14 - 9y = 14

-21y +14 - 14 = 14 - 14

-21y/-21 = 0 / -21

y = 0

<u>Step 2:  Substitute y into the second equation</u>

x = -6y + 7

x = -6(0) + 7

x = 0 + 7

x = 7

Answer:  x = 7, y = 0

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A parent made x cupcakes for each of the 109 students in the fourth grade. Which expression could be used to determine the total
larisa86 [58]

109x is the expression that could be used to determine the total number of cupcakes made given that a parent made x cupcakes for each of the 109 students in the fourth grade. This can be obtained by forming the algebraic expression for the given conditions.

<h3>Find the required expression:</h3>
  • Algebraic expression is made up of numbers, operations and variables.
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Given that,

A parent made x cupcakes for each of the 109 students in the fourth grade.

The total number of students in the class = 109

The number of cupcakes one student gets = 1 × x = x

⇒ The number of cupcakes 109 student gets = 109 × x = 109x

Hence 109x is the expression that could be used to determine the total number of cupcakes made given that a parent made x cupcakes for each of the 109 students in the fourth grade.

Learn more about algebraic expression here:

brainly.com/question/953809

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7 0
1 year ago
The area of a circle is 28.26 square centimeters. What is its diameter (use 3.14 for ð)?
horsena [70]
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then we root both sides to get r on it's own
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Answer:

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Step-by-step explanation:

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spin [16.1K]

Answer:

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3 years ago
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