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xxMikexx [17]
3 years ago
6

Create an equivalent system of equations using the sum of the system and the first equation

Mathematics
2 answers:
ohaa [14]3 years ago
8 0

Answer:

\large\boxed{A.\ \left\{\begin{array}{ccc}-3x+y=12\\-2x+4y=18\end{array}\right}

Step-by-step explanation:

\underline{+\left\{\begin{array}{ccc}-3x+y=12\\x+3y=6\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad-2x+4y=18\\\\\text{therefore}\\\\\left\{\begin{array}{ccc}-3x+y=12\\-2x+4y=18\end{array}\right

KIM [24]3 years ago
6 0

Answer:

it's A

Step-by-step explanation:

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What is the probability that a two-digit number selected at random has a tens digit less than its units digit
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The probability that a two-digit number selected at random has a tens digit less than its units digit is 0.2667 (4/15).

A=24B=90\\\\P=A/B\\\\P=24/90\\p=4/15

There are 90 two-digit numbers (99-9). Of these, six numbers are divisible by 15 (15, 30, 45, 60, 75, 90). This is also divisible by 5. Therefore, the preferred case is 30-6 = 24. Therefore, the required probability is 24/90 = 4/15.

The probability of an event can be calculated by simply dividing the number of favorable results by the total number of possible results using a probabilistic expression. Whenever you are uncertain about the outcome of an event, you can talk about the probability of a particular outcome, that is, its potential.

Learn more about probability here: brainly.com/question/24756209

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2 years ago
a city doubles its size every 64 years. if the population is currently 225,000 what will the population be in 128 years
ale4655 [162]

Answer:

450,000

Step-by-step explanation:

128/64:2

225,000 X 2: 450,000

4 0
3 years ago
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Find the perimeter of a polygon with vertices at A(0, 1), B(4, 4), C(7, 0), D(3, -3), E(-4, -4). Round your answer to the neares
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3 years ago
Explain how to model the multiplication of –6 and 3 on a number line
Sedaia [141]

Answer:

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Step-by-step explanation:

So, on a numberline, start at 0 then add -6 three times (since you are multiplying it by three) and you should get -18

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3 years ago
How to solve 2x + 3(5-x)-12=4(x+2) step by step
larisa86 [58]
2x+3(5-x)-12=4(x+2)

Distribution property:
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Subtract 8 from both sides:
-5=5x
Divide by 5 on both sides to get x by itself:

x= -1
3 0
3 years ago
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