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Alex
2 years ago
8

Helpppppppppppppppppppppppppppp

Mathematics
2 answers:
Sonja [21]2 years ago
8 0

Answer:

use formula

Step-by-step explanation:

and solve step by step hope it helpd

grandymaker [24]2 years ago
6 0

Answer:

hii

Step-by-step explanation:

I don't know what is the answer

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Solve by elimination:
Pie

Answer:

B (5, 13)

Step-by-step explanation:

9x + 4y = 97

9x + 6y = 123

To solve by elimination, we want to <em>eliminate</em> a variable. To do this, we must make one variable cancel out.

First, we can see that both equations have 9x. To cancel out x, we must make <em>one</em> of the 9x's <em>negative</em>. To do this, multiply <em>each term</em> in the equation by -1.

-1(9x + 6y = 123)

-9x - 6y = -123

This is one of your equations. Set it up with your other given equation.

9x + 4y = 97

-9x - 6y = -123

Imagine this is one equation. Since every term is negative, you will be subtracting each term.

9x + 4y = 97

-9x - 6y = -123

___________

0x -2y = -26

-2y = -26

To isolate y further, divide both sides by -2.

y = 13

Now, to find x, plug y back into one of the original equations.

9x + 4(13) = 97

Multiply.

9x + 52 = 97

Subtract.

9x = 45

Divide.

x = 5

Check your answer by plugging both variables into the equation you have not used yet.

-9(5) - 6(13) = -123

-45 - 78 = -123

-123 = -123

Your answer is correct!

(5, 13)

Hope this helps!

6 0
3 years ago
The sum of two numbers is 19 and there difference is 7 what are the two numbers
Zielflug [23.3K]

Answer:

The two numbers are 13 and 6.

Step-by-step explanation:

x+y=19

x-y=7

-----------

2x=26

x=26/2

x=13

13+y=19

y=19-13

y=6

x=13, y=6.

5 0
3 years ago
Read 2 more answers
How to write slope intercept form of<br> y = -5/4 (x+4)
Mkey [24]

Answer: y=−5/4x−5

Step-by-step explanation:

5 0
3 years ago
In the order of operations, expressions inside parentheses are evaluated before exponents, True or false?
avanturin [10]

Answer:

The answer is True

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Tina makes 480 sandwiches. She only makes tuna sandwiches, beef sandwiches, ham sandwiches and cheese sandwiches
MissTica

Answer:

she will have 120 each sandwich

Step-by-step explanation:

7 0
2 years ago
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