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34kurt
2 years ago
8

What would you do to solve the system?

Mathematics
1 answer:
Molodets [167]2 years ago
8 0

Answer:

To decide whether to add or subtract,  determine if the values of the  coefficients are the same or opposites:

. If the values are the same, subtract the  equations.

• If the values are opposites or additive  inverses, add the equations.

Step-by-step explanation:

Given

12x = 48 - 8y

10x + 8y = 38

Required

How to solve

Options (1) and (2) are incorrect because none of the options eliminate x or y.

For option (3),

- Check for the coefficients of x and y

- If they are the same (sign and value), then subtract; otherwise add

For instance:

12x = 48 - 8y

10x + 8y = 38

Rewrite the second equation

12x = 48 - 8y

10x = 38 - 8y

The coefficient of y are the same, so we subtract;

12x - 10x = 48 - 38 -8y -(-8y)

12x - 10x = 48 - 38 -8y +8y

2x = 10

x= 5

<em>See that y has been eliminated</em>

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The sum of three consecutive odd numbers is 183. What is the smallest of the three numbers ?
koban [17]

Answer:

59

Step-by-step explanation:

Average = 183/3 = 61

Two consecutive odd numbers differ by 2.

Hence, the numbers are 61-2, 61, 61 +2  or      59, 61, 63

The smallest is 59.

8 0
3 years ago
Find the least squares regression line for the data points. (Let x be the independent variable and y be the dependent variable.)
solniwko [45]

Answer:

y = - 0.9167 - 0.75x

Step-by-step explanation:

Given the data:

(−1, 0), (1, −2), (3, −3)

X : - 1, 1, 3

Y : 0, - 2, - 3

The regression model is written in the form:

y = C + mx

Where ;

C = intercept ; m = slope / gradient

Using the regression model calculator on the data values given above :

Slope (m) = - 0.75

Intercept (c) = - 0.9167

Hence,

y = - 0.9167 - 0.75x

c

6 0
2 years ago
Describe the transformation's necessary to transform the graph f(x) into that of g(x)
slamgirl [31]

Answer:

C and F

Step-by-step explanation:

Those two just work, that simple

6 0
3 years ago
Move the dot -(-E) on the number line. E=3.5
lidiya [134]
The correct answer is n the un
3 0
2 years ago
Please help. I'm dumb and can't understand this.
Fed [463]

Answer: 5 years

              14,800 students enrolled

Step-by-step explanation:

Let x represent the number of years and

Let y represent the number of students enrolled

College A: y = 12,300 + 500x

College B: y = 18,550 - 750x

Use substitution Method to solve:

12,300 + 500x = 18,550 - 750x

            +750x                +750x

12,300 + 1250x = 18,550

-12,300               -12,300

              1250x = 6250

                      x = 5

Input x = 5 into one of the equations to solve for y.

y = 12,300 + 500x

  = 12,300 + 500(5)

  = 12,300 + 2500

  = 14,800

Read more on Brainly.com - brainly.com/question/12387804#readmore

8 0
3 years ago
Read 2 more answers
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