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Y_Kistochka [10]
3 years ago
5

The sum of two numbers is 12. The first number, x, is twice the second number, y. Which system of equations could be used to fin

d the two numbers?
Mathematics
2 answers:
kotykmax [81]3 years ago
7 0

The numbers are x and y, and their sum is 12. The word "sum" indicates addition; you will add x and y.

There's your first equation: x + y = 12

The first number, x, is twice the second number, y. In other words, x times 2 is y.

There's your second equation: 2x = y

The system of equations is: x + y = 12; 2x = y

If you needed to solve the system, you would first plug 2x for y into x + y = 12 and solve for x:

x + y = 12

x + 2x = 12

3x = 12

x = 4

Then you'd plug 4 for x into either equation to solve for y:

x + y = 12

4 + y = 12

y = 8

The solution to the system is (4, 8).

hammer [34]3 years ago
4 0
X+y=12
y=2x

That is your equation because the first one shows that x plus y equals 12. The second equation is correct because it shows that two times x equals your y.

Leaving your two numbers to be x=4 y=8
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Answer:

<em>AB = 3π</em>

Step-by-step explanation:

<em>See attachment for correct format of question.</em>

Given

From the attachment, we have that

θ = 20°

Radius, r = 27

Required

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AB is an arc and it's length can be calculated using arc length formula.

Length = \frac{\theta}{360} * 2\pi r

<em>Substitute 20 for θ and 27 for r</em>

Length = \frac{20}{360} * 2\pi *27

Length = \frac{20 * 2\pi * 27}{360}

Length = \frac{1080 \pi}{360}

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Hence, the length of arc AB is terms of π is 3π

3 0
4 years ago
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Darya [45]

Answer:201 11/21

Step-by-step explanation:

The number 4232 is called the numerator or dividend, and the number 21 is called the denominator or divisor.

The quotient of 4232 and 21, the ratio of 4232 and 21, as well as the fraction of 4232 and 21 all mean (almost) the same:

4232 divided by 21, often written as 4232/21.

Read on to find the result of 4232 divided by 21 in decimal notation, along with its properties.We provide you with the result of the division 4232 by 21 straightaway:

4232 divided by 21 = 201.523809

The result of 4232/21 is a non-terminating, repeating decimal. The repeating pattern above, 523809, is called repetend, and denoted overlined with a vinculum.

This notation in parentheses is also common: 4232/21 = 201.(523809): However, in daily use it’s likely you come across the reptend indicated as ellipsis: 4232 / 21 = 201.523809… .

4232 divided by 21 in decimal = 201.523809

4232 divided by 21 in fraction = 4232/21

4232 divided by 21 in percentage = 20152.38095238%

Note that you may use our state-of-the-art calculator above to obtain the quotient of any two integers or decimals, including 4232 and 21, of course. Repetends, if any, are denoted in ().

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3 years ago
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C) Similar-SAS

Step-by-step explanation:

Here,

BSE ~ TES

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BSE = TES (:• Being Corresponding angle

SE = SE (:•Being corresponding side)

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ZanzabumX [31]

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