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galina1969 [7]
3 years ago
13

Select the correct answer. The elimination method is ideal for solving this system of equations. By which number must you multip

ly the second equation to eliminate the y-variable, and what is the solution for this system? x + 3y = 42 2x − y = 14 A. Multiply the second equation by -3. The solution is x = 12, y = 9. B. Multiply the second equation by -2. The solution is x = 12, y = 10. C. Multiply the second equation by 2. The solution is x = 15, y = 9. D. Multiply the second equation by 3. The solution is x = 12, y = 10.(help i will give brainliest.)
Mathematics
2 answers:
Reptile [31]3 years ago
7 0

Answer:

c

Step-by-step explanation:

Multiply the second equation by 2. The solution is x = 15, y = 9.

vesna_86 [32]3 years ago
3 0

Answer: D

Step-by-step explanation:

It’s 3y so to get rid of the y variable you divide by what number is in front of it

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liz wants to determine which sport students like to play the most at her school.which method will most likely produce a random e
never [62]

Answer:

Random sampling

Step-by-step explanation:

Random sampling is a method of choosing a sample of observations from a population to make assumptions about the population. It is also called probability sampling.

6 0
2 years ago
Dr. E. Quation says the Infant Mortality Rate of Korea shown by the expression; 7(m + 3) - 2. Is equal to his criminal success r
GarryVolchara [31]

Answer:

The infant mortality rate in Korea based on equality provided is:

  • 1.8

Step-by-step explanation:

Since the text mentions that the infant mortality rate in Korea is equal to the criminal success rate, the two expressions must equalize and clear the variable m, which is the rate in each of the expressions:

  • 7 (m + 3) - 2 = 8m + 17.2
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As you can see, once the equality of the expressions is solved, <u>a rate of 1.8</u> is obtained.

6 0
3 years ago
Help me please ASAP. I really need this
Ksju [112]

Answer:

Step-by-step explanation:

I don't think this can be done without the diagram. You do not know what HD is opposite. I will take a guess that it is opposite TU which makes TU = 220 because both H and D are midpoints and that makes TU twice as large as HD.

If this is incorrect, post the diagram.

6 0
3 years ago
Please help ASAP.. I don’t understand.
Dmitry_Shevchenko [17]

Y intercept means x = 0, on x= 0 y is also zero so the cordinate is (0,0)

8 0
3 years ago
Find the value of two numbers if their sum is 12 and their difference is 4
IrinaK [193]
X + y = 12
x - y = 4
-----------------add
2x = 16
x = 8

x - y = 4
8 - y = 4
y = 4

answer
two numbers: 8 and 4

doule check
sum = 8 + 4 = 12
difference = 8 - 4 = 4
3 0
3 years ago
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