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1 year ago

(-13xy+2y)+(2x-5xy-15y)

Mathematics

2 answers:

Thepotemich [5.8K]1 year ago

8 0

Answer:

2x -18xy -13y

Step-by-step explanation:

(-13xy + 2y) + (2x - 5xy -15y)

-13xy + 2y + 2x -5xy - 15y

Collecting like term..

2x -13xy - 5xy - 15y + 2y

= 2x -18xy -13y

Arturiano [62]1 year ago

3 0

Answer:-18xy+2x-13y

Step-by-step explanation: combine like terms

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What is the volume of a regular pyramid having a base area of 24 inches and height of 6 inches

Anestetic [448]

Answer:

V= 48 in^2

Step-by-step explanation:

Formula

Since the base has a known area, we do not need the full volume formula. This formula is

B is the area of the base and h is the height measured from the top of the pyramid to the base meeting the base at right angles.

Givens

B = 24 in^2

h = 6 in

Solution

V = B * h / 3

V = 24 * 6/3

V= 48 in^2

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1 year ago

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3/4h*19mi/1/4h. Can you please help me I need an answer by tonight

aniked [119]

Answer:

$57mi$

Step-by-step explanation:

we have

$\frac{3}{4}h*19mi/\frac{1}{4}h$

we know that

$\frac{3}{4}h*19mi/\frac{1}{4}h=\frac{(3/4)h}{(1/4)h}*19mi\\ \\=3*19mi\\ \\=57mi$

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3 years ago

-3x + 12x ...........

elixir [45]

-3x + 12x would be 9x.

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2 years ago

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In the figure, the radius of the partial circle with center A is 4 feet.

Aleksandr [31]

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2 years ago

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At a candy store, Erika bought 3 kilograms of cinnamon red hors and 1 kilogram of gummy bears for $21.00. Meanwhile, trene bough

prisoha [69]

The cost of one kilogram of cinnamon red hots is $4.00 and cost of one kilogram of gummy bears is $9.00

Step-by-step explanation:

Let,

Cost of one kilogram of cinnamon red hots = x

Cost of one kilogram of gummy bears = y

According to given statement;

3x+y=21 Eqn 1

3x+3y=39 Eqn 2

Subtracting Eqn 1 from Eqn 2

$(3x+3y)-(3x+y)=39-21\\3x+3y-3x-y=18\\2y=18$

Dividing both sides by 2

$\frac{2y}{2}=\frac{18}{2}\\y=9$

Putting y=9 in Eqn 1

$3x+9=21\\3x=21-9\\3x=12$

Dividing both sides by 3

$\frac{3x}{3}=\frac{12}{3}\\x=4$

The cost of one kilogram of cinnamon red hots is $4.00 and cost of one kilogram of gummy bears is $9.00

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

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2 years ago