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3 years ago

Need help with this math

Mathematics

1 answer:

tiny-mole [99]3 years ago

4 0

Answer:

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Step-by-step explanation:

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What is 2/7 ÷ 4/21 fully reduced

NikAS [45]

When dividing fractions, you flip the second fraction and multiply

$\dfrac{2}{7} \div \dfrac{4}{21}~becomes~\dfrac{2}{7}*\dfrac{21}{4}$

Next, we multiply:

$\dfrac{2}{7}*\dfrac{21}{4}=\dfrac{42}{28} = \dfrac{21}{14}= 1 \dfrac{1}{2} 
$

8 0

3 years ago

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Which is the most efficient first step to solve for x in the equation 3.7 x minus 18 = negative 4.3 x minus 34? Add 3.7x to both

ahrayia [7]

Answer:Add 4.3x to both sides of the equation.

Step-by-step explanation:

The given equation is expressed as

3.7x - 18 = - 4.3x - 34

The main aim is to solve for x and x is on the left hand side and the right hand side of the equation. So the most efficient step would be to make all the terms containing x to be on the left hand side of the equation and the constants to be on the right hand side of the equation.

Therefore, the most efficient first step to solve for x in the equation would be

Add 4.3x to both sides of the equation.

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3 years ago

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Julie cashed a paycheck and repaid her brother $10 that she had borrowed from him. She then spent $30 on fuel for her car and ha

never [62]

77.20 i think i did it in my head and with a caluclator

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3 years ago

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53. Chris's food truck sells grilled cheese sandwiches for $4 85 and deep

prisoha [69]

Answer:

The number of grilled cheese sandwiches sold was 132 and the number of deep fried Twinkies sold was 271

Step-by-step explanation:

Let

x -----> the number of grilled cheese sandwiches

y -----> the number of deep fried Twinkies

we know that

The system of equations that represent this scenario is equal to

x+y=403 ------> equation A

4.85x+2.95y=1,439.65 ------> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (132,271)

see the attached figure

therefore

The number of grilled cheese sandwiches sold was 132 and the number of deep fried Twinkies sold was 271

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3 years ago

What is the value of x?

Natasha2012 [34]

Answer:

x = 8

Step-by-step explanat

7 0

3 years ago

Need help with this math​

Need help with this math