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4 years ago

Use the substitution method Y=-2x+11 y=-3x+21

Mathematics

1 answer:

gogolik [260]4 years ago

6 0

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Y = 2 y /3 − 3

x = − y /3 + 7

Hope this helped!

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3.8+(-4.8+(-6.2))=(3.8+(-4.8))+(-6.2)

katrin [286]

-6.2 plus -4.8 is -11. add the 3.8 to get -7.2

-4.8 plus 3.8 is -1

-1 plus -6.2 is -7.2

-7.2=-7.2

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4 years ago

Carrie planted 48 tulips in 12 minutes . How many did she plant per minute

irina [24]

It would be 4 tulips planted

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If It is known that 5

makkiz [27]

Could u give the rest of the question?

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3 years ago

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The mean length of 5 childrens' index finger is 5.6cm.

Brilliant_brown [7]

The mean length (rounded to 2 DP) of these 8 people's index finger is 5.83

<h3>What is the mean length (rounded to 2 DP) of these 8 people's index finger?</h3>

The given parameters are:

<u>Children</u>

Mean = 5.6 cm

Frequency = 5

<u>Adult</u>

Mean = 6.2 cm

Frequency = 3

The mean length of these 8 people's index finger is calculated as:

$\bar x = \frac{\sum fx}{\sum f}$

So, we have

Mean = (5.6 * 5 + 6.2 * 3)/(5 + 3)

Evaluate

Mean = 5.83

Hence, the mean length (rounded to 2 DP) of these 8 people's index finger is 5.83

Read more about mean at

brainly.com/question/20118982

#SPJ1

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2 years ago

In 3-10 use the distributive property to find each missing factor

Elanso [62]

The missing factor in the equation is -21

<h3>What is a distributive factor?</h3>

The Distributive Property introduces the multiplication operator an existing mathematical statement that involves the addition operator.

From the complete question, the equation is given as:

$6 \times x= (3 \times 7) + (x \times 7)$

Where x represents the missing factor.

So, we have:

$6x= (21) + (7x)$

Remove brackets

$6x= 21 + 7x$

Collect like terms

$6x-7x= 21$

Evaluate the like terms

$-x= 21$

Divide both sides by -1

$x= -21$

Hence, the missing factor in the equation is -21

Read more about the distributive property at:

brainly.com/question/2807928

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3 years ago