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Bad White [126]
2 years ago
12

The sum of two numbers is 21.The second is 6 times the first number .work out the two numbers

Mathematics
2 answers:
antiseptic1488 [7]2 years ago
5 0

Answer:

<h2>3 and 18</h2>

Step-by-step explanation:

n-first\ number\\\text{the second number is 6 times the first number}\\6n-second\ number\\\\\text{the sum is 21:}\\\\n+6n=21\\7n=21\qquad\text{divide both sides by 7}\\\boxed{n=3}\\\\6n=6(3)\\\boxed{6n=18}

Nimfa-mama [501]2 years ago
4 0

Answer:

Sum of the two numbers is 21 and Second number is six times the first number

x+6x = 21

7x = 21

x = 21/7

x = 3

substitute x value in 6x to find second number,

 = 6x

 = 6*3

 = 18

Therefore first number is 3 and second number is 18

Step-by-step explanation:

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Answer:

34x + 45y = 192.25

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Step-by-step explanation:

Let x stand for peaches.

Let y stand for grapes.

Since we know that yesterday he sold 35 pounds of peaches ( x ) and 45 pounds of grapes ( y ) for $192.25, we can create an equation to represent this using two variables; peaches and grapes.

We can do the same thing with the amount of peaches and grapes he sold today. Once we make this equation, we will have two equations to make the system of equations to solve for x and y.

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F(x) = 1/(5x-6)Find the derivative of this function
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Given

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How many 2/3 cup servings of soup are in 4 cups of soup?
klasskru [66]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
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Step-by-step explanation:

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Step-by-step explanation:

You can solve using PEMDAS:

Parentheses

Exponents

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Division

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