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3 years ago

15

Luke and Matthew ran a lemonade stand on Saturday. They agreed that Matthew would get 60% of the profit because the lemonade sta

nd was his idea. They made a profit of $25.
How much money did Matthew make?

2 answers:

True [87]3 years ago

6 0

Answer:

$15

Step-by-step explanation:

60/100*25=15

Helga [31]3 years ago

4 0

$15 if you need more details please comment or message me I’ll be happy to help.

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Which of the following is the solution set of 18 - 3n + 2 = n + 20 - 4n?

exis [7]

The solution set of the equation is all reals ⇒ 3rd answer

Step-by-step explanation:

The solution set of an function is the set of all vales make the equation true. The equation has:

Solution if the left hand side is equal to the right hand side
No solution if the left hand side doesn't equal the right hand side

∵ The equation is 18 - 3n + 2 = n + 20 - 4n

- Add the like terms in each side

∴ (18 + 2) - 3n = (n - 4n) + 20

∴ 20 - 3n = -3n + 20

- Add 3n to both sides

∴ 20 = 20

In the equation of one variable, when we solve it if the variable is disappeared from the two sides, and the two sides of the equations are equal, then the variable can be any real numbers, if the two sides are not equal, then the variable couldn't be any value

∵ The the variable n is disappeared

∵ The left hand side = the right hand side

∴ n can be any real number

∴ The solution set of the equation is all real numbers

The solution set of the equation is all reals

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You can learn more about the equations in brainly.com/question/11229113

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3 years ago

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What is the complex conjugate of -8+12i

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The complex conjugate of a + bi is a - bi

So, the complex conjugate of -8 + 12i is -8 - 12i.

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What is the simplified form of 2(3x+5)-30+7x_4

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Step-by-step explanation:

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A roadside vegetable stand sells pumpkins for $5 each and tomatoes for $3 each. The

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Step-by-step explanation: I need help

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A car starts with a dull tank of gas. After driving around 5he city, 1/7 of the gas has been used. With the rest of the gas in t

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Answer:

$\frac{2}{7}$

Step-by-step explanation:

Given:

A car starts with a dull tank of gas

1/7 of the gas has been used around the city.

With the rest of the gas in the car, the car can travel to and from Ottawa three times.

Question asked:

What fractions of a tank of gas does each complete trip to Ottawa use?

Solution:

Fuel used around the city = $\frac{1}{7}$

Remaining fuel after driving around the city = 1 - $\frac{1}{7}$

= $\frac{7 - 1}{7} = \frac{6}{7}$

According to question:

As from the rest of the gas in the car that is $\frac{6}{7}$ , the car can complete 3 trip to Ottawa which means,

By unitary method:

The car can complete 3 trip by using = $\frac{6}{7}$ tank of gas.

The car can complete 1 trip by using = $\frac{6}{7} \div 3$

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Thus, $\frac{2}{7}$ tank of gas used for each complete trip to Ottawa.

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