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2 years ago

How to solve the system of equations that answers as all real numbers?

Mathematics

1 answer:

bija089 [108]2 years ago

5 0

You can solve a system using substitution, elimination, or graphing method.

If you solve using substitution or elimination, the variable will cancel out on both sides and you will be left with a number equal to a number. If "number = number" is a TRUE statement, then the solution is ALL Real Numbers. If it is a FALSE statement, then you will have NO solutions.

If you solve using the graphing method and the lines are exactly the same, then the solution is Infinite solutions (aka ALL Real Numbers). If the lines are parallel, then you will have NO solution.

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The cost of 12 kg sugar is $240 what will be the cost of 3 kg sugar

Alexus [3.1K]

Question:

The cost of 12 kg sugar is $240 what will be the cost of 3 kg sugar.

Given:

Cost of 12 kg sugar = $240

To find?

cost of 3 kg sugar

Answer :

To find cost of 3kg sugar first we have to find cost of 1 kg sugar.

Cost of 1 kg sugar = Cost of total no. of sugar ÷Total sugar
Cost of 1 kg sugar = $240/12
Cost of 1 kg sugar = $20

Now Let's find cost of 3 kg sugar

Cost of 3kg sugar = total no of sugar ×Cost of 1 kg sugar

Cost of 3kg sugar = 3×$20

Cost of 3kg sugar = $60

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2 years ago

A train decreased its speed by 72 miles hour in 12 minutes. Find the average change in speed per minute.

melisa1 [442]

Answer:

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Step-by-step explanation:

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2 years ago

The school is 3.2 blocks from someone’s house. how many blocks does the person walk to go to and from school?

DENIUS [597]

The answer is: " 6.4 blocks " .

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3.2 blocks (one way), PLUS: 3.2 blocks the other way:

3.2 + 3.2 = 6.4 blocks .

or: (3.2) * 2 = 6.4 blocks .

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3 years ago

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2 years ago

Find the product (7x^2y^3)(3x^5y^8)

brilliants [131]

Hello!

$\large\boxed{21x^7y^{11}}}$

(7x²y³)(3x⁵y⁸)

Multiply by ADDING exponents with the same base:

(7 * 3) (x² * x⁵) (y³ * y⁸)

21 * x² ⁺ ⁵ * y³ ⁺ ⁸

Simplify:

21 * x⁷ * y¹¹

21x⁷y¹¹

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2 years ago

Read 2 more answers