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2 years ago

Simplify 3(2x+4y-2z)+7(x+y-4z)

1 answer:

5 0

$3(2x + 4y - 2z) + 7(x + y - 4z)$
Remove parenthesis.
Distribute 3 and 7 through the parenthesis

$= 6x + 12y - 6z + 7x + 7y - 28z$
Collect the like terms by adding their coefficients.

$= 13x + 12y - 6z + 7y - 28z$
Collect the like terms by adding their coefficients.

$= 13x + 19y - 6z - 28z$
Collect like terms by calculating the sum or difference of their coefficients. Use addition and subtraction rules to calculate the expression.

$= 13x + 19y - 34z$

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Show work please thank you

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4) 108 + 24 = 132 cm ² - the area.

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3 years ago

A point (3, –2) is reflected across the x-axis followed by a reflection across the y-axis. Find the image of the point after the

kotegsom [21]

Answer:

D. (-3, 2)

Step-by-step explanation:

The original point is (3, -2)

The rule for reflecting across the x-axis is (x, y) -> (x, -y)

(3, -2) -> (3, 2)

The rule for reflecting across the y-axis is (x, y) -> (-x, y)

(3, 2) -> (-3, 2)

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Is .444 rational or irrational???

Murljashka [212]

Any terminating decimal number is rational.
A rational number is a number that can be written as a fraction of integers.

0.444 = 444/1000 = 222/500 = 111/250

0.444 is the same as 111/250, a fraction of integers, so 0.444 is rational.

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3 years ago

Katie has a bag of 15 marbles. There are 3 green, 4 blue, and 5 red marbles. The rest of the marbles are yellow. If Katie random

son4ous [18]

Answer:

P(yellow or red) =8/15

Step-by-step explanation:

There are 15 marbles, 3 green, 4 blue, and 5 red marbles.

3+4+5 = 12

That means there are 15-12 = 3 3 yellow marbles.

3 green,

4 blue

5 red

3 yellow

To find the probability of yellow or red, we add the number of yellow and red marbles together over the total number of marbles

P(yellow or red) = (yellow +red)/ total

= (3+5)/ 15

=8/15

8 0

3 years ago