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4 years ago

Which expression is equivalent to 2 3 (3x + 9y) + 1 2 (4x - 2y)?

Mathematics

2 answers:

Paladinen [302]4 years ago

6 0

Answer:

4x+5y

Step-by-step explanation:

Next time, add a / or something to let us know that 2/3 and 1/2 are fractions.

The way i had done this is multiplying 3x+9y by 2, which becomes 6x+18y, then dividing it by 3, which becomes 2x+6y

Then, divided 4x-2y by 2, since anything times 1 is itself. This would result in 2x-y.

Finally, You simply just add the (2x+6y) + (2x-y), which results in 4x-5y.

adell [148]4 years ago

3 0

Assuming that you are talking about 2 times 4 and 1 times 2 which i am confused about because of the space in between the answer would be 18x +54y +8x-4y which simplifies into 26x+50y

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lapo4ka [179]

The answer is i don’t know or I don’t care and what are we trying to find

5 0

4 years ago

What is the equation of aline that passes through the point (4,-8) and has a slope of -1/2?

viktelen [127]

Answer:

The equation of the line will be:

$y=-\frac{1}{2}x-6$

Step-by-step explanation:

Given

slope = m = -1/2

point (4, -8)

Point slope form:

$y-y_1=m\left(x-x_1\right)$

substituting the values m = -1/2 and the point (4,-8)

$y-\left(-8\right)=\frac{-1}{2}\left(x-4\right)$

$y+8=\frac{-1}{2}\left(x-4\right)$

subtract 8 from both sides

$y+8-8=\frac{-1}{2}\left(x-4\right)-8$

$y=-\frac{1}{2}x-6$

Therefore, the equation of the line will be:

$y=-\frac{1}{2}x-6$

4 0

3 years ago

Will give brain list!!! I need helppp! And show workk

Debora [2.8K]

Answer:

Dude! Stop telling people to do your work on DeltaMath

Step-by-step explanation:

6 0

3 years ago

A construction company makes cement stairs from a wooden mold. The construction company must calculate the volume of the mold to

Dahasolnce [82]

Considering the volume of a rectangular prism, it is found that the volume of the wooden mold is given by:

C. 6,000 in³

<h3>What is the volume of a rectangular prism?</h3>

The volume of a rectangular prism of length l, width w and height h is given by:

$V = lwh$

In this problem, the wooden mold is composed by two rectangular prisms:

The first has dimensions of 25 in, 10 in and 12 in.

The second has dimensions of 20 in, 12 in and 12 in.

Hence the volume in cubic inches is given by:

$V = 25(10)(12) + 20(12)(12) = 5880$

Rounding, it is closest to 6000 in³, hence option C is correct.

More can be learned about the volume of a rectangular prism at brainly.com/question/17223528

7 0

2 years ago

Convert 614 into base five number system.

algol [13]

Answer:

4424

Step-by-step explanation:

the number 614 is in the base ten system that we use every day. the base five system represents each digit in the number represents the number of copies of that power of 5.

check out:

rapidtables.com/convert/number/base-converter.html

8 0

3 years ago