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Ne4ueva [31]
3 years ago
9

What are the steps to solving systems of equations and inequalities

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
7 0

Step 1: Line up the equations so that the variables are lined up vertically.

Step 2:  Choose the easiest variable to eliminate and multiply both equations by different numbers so that the coefficients of that variable are the same.

Step 3:  Subtract the two equations.

Step 4:  Solve the one variable system.

Step 5:  Put that value back into either equation to find the other equation.

Step 6:  Reread the question and plug your answers back in to check.

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Sharon buys four salmon steaks for $22.95 at her local supermarket. The weights of the steaks, in pounds, are 0.68, 0.74, 0.77,
Tema [17]

Answer:

$7.65

Step-by-step explanation:

Given that:

Money used for buying the four salmon steaks = $22.95

Weights of steaks in pounds = 0.68, 0.74, 0.77, and 0.81

To find:

Price of salmon steak per pound, to the nearest cent = ?

Solution:

Total weight of all 4 steaks = 0.68 + 0.74 + 0.77 + 0.81 = 3

Here, to find the price of salmon steak per pound we need to divide the total money used to buy salmon steaks with the total weight of salmon steaks in pounds.

Price of salmon steak per pound = \frac{22.95}{3} = \$7.65

4 0
2 years ago
A multivitamin tablet contains
dezoksy [38]
For every multivitamin tablet you take, you get 0.14 grams of vitamin C.

0.14 * 30 = 4.2

The question wants the answer in milligrams.

One milligram = 0.001 gram

4.2 / 0.001 = 42000
<span>
So, 42000 is the answer.</span>
7 0
3 years ago
Read 2 more answers
What is the answer of -12x+-7x​
Dmitriy789 [7]

Answer:

-19x

Step-by-step explanation:

6 0
2 years ago
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In the 1980s an average mortgage rate was around 18.5 how much less per month would a 150000 30 year mortgage by today if the cu
lianna [129]

Answer:

  $1516.69 per month less

Step-by-step explanation:

The formula for the monthly payment A on a loan of principal P, annual rate r, for t years is ...

  A = P(r/12)/(1 -(1 +r/12)^(-12t))

For the 18.5% loan, the monthly payment is ...

  A = 150000(.185/12)/(1 -(1 +.185/12)^(-12·30)) ≈ 2321.92

For the 5% loan, the monthly payment is ...

  A = 150000(.05/12)/(1 -(1 +.05/12)^-360) ≈ 805.23

The mortgage at 5% would be $1516.69 less per month.

7 0
3 years ago
HELP ASAP WILL MARK BRAINLIEST
Aleks04 [339]

Answer: 11

Step-by-step explanation:

6 0
2 years ago
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