1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marizza181 [45]
2 years ago
8

The value of " X " is...

Mathematics
1 answer:
bulgar [2K]2 years ago
3 0

Answer:

3

Step-by-step explanation:

If you multiply the first equation by 2 and add the second, you eliminate z from the resulting equation.

If you add the first and third equations, you also eliminate z from the result.

Both of these resulting equations will have 3y as their second term, so you can subtract the first result from the second to eliminate the y variable and find the value of x.

This process has a shortcut. If we call the equations A, B, and C, the first elimination is done by calculating 2A+B. The second elimination calculates A+C. To find x, we compute ...

... (A+C) -(2A+B) = -A -B +C

... -(2x +y -z) -(-x +y +2z) +(3x +2y +z) = -3 -0 +9

... x(-2+1+3) +y(-1-1+2) +z(1-2+1) = 6

... 2x = 6

... x = 3

_____

Since this is a college math question, we presume you have a graphing calculator and are expected to know how to use it. The solution to systems of linear equations on such a calculator is usually pretty simple. A TI-84 can tell you the values of x, y, and z pretty easily: (x, y, z) = (3, -1, 2).

You might be interested in
there are 64 fifth graders at parks school. 3/8 of them bring their own lunch to school. how many of them bring their own lunch?
Anarel [89]
24 because 1/8 of 64 is 8 then you multiply that by 3
8 0
3 years ago
Read 2 more answers
Write an equation for the graph shown in the form y=ax+b.
zzz [600]

Answer:

y=0.2x+1

Step-by-step explanation:

2=5a+b

1.2=1a+b

0=-5a+b

we get that a=0.2, b=1

8 0
2 years ago
How do I divide I don’t know how to it’s so confusing and how do you do the remainders
podryga [215]

Answer:

Step-by-step explanation:

set up the problem long division 487 divided by 32 Set up the division problem with the long division symbol or the long division bracket.

Put 487, the dividend, on the inside of the bracket. The dividend is the number you're dividing.

Put 32, the divisor, on the outside of the bracket. The divisor is the number you're dividing by.

step 1 divide dividend by divisor in long division 487 divided by 32 Divide the first number of the dividend, 4 by the divisor, 32.

4 divided by 32 is 0, with a remainder of 4. You can ignore the remainder for now.

step 2 subtraction in long division problem 487 divided by 32 Put the 0 on top of the division bracket.

This is the beginning of the quotient answer.

Next, multiply 0 by the divisor 32 and insert the result 0 below the first number of the dividend inside the bracket.

0 * 32 = 0

step 3 long division 487 divided by 32 Draw a line under the 0 and subtract 0 from 4.

4 - 0 = 4

step 4 long division 487 divided by 32 Bring down the next number of the dividend and insert it after the 4 so you have 48.

step 5 long division 487 divided by 32 Divide 48 by the divisor, 32. The answer is 1. You can ignore the remainder for now.

48 ÷ 32 = 1

Note that you could skip all of the previous steps with zeros and jump straight to this step. You just need to realize how many digits in the dividend you need to skip over to get your first non-zero value in the quotient answer. In this case you could divide 32 into 48 straight away.

step 6 long division 487 divided by 32 Put the 1 on top of the division bar, to the right of the 0. Next, multiply 1 by 32 and write the answer under 48.

1 * 32 = 32

step 7 long division 487 divided by 32 Draw a line and subtract 32 from 48.

48 - 32 = 16

step 8 long division 487 divided by 32 Bring down the next number from the dividend and insert it after the 16 so you have 167.

step 9 long division 487 divided by 32 Divide 167 by the 32. See a pattern emerging?

167 ÷ 32 is 5 with a remainder of 7

step 10 long division 487 divided by 32 Put the 5 on top of the division bar, to the right of the 1. Multiply 5 by 32 and write the answer under 167.

5 * 32 = 160

step 11 long division 487 divided by 32 Draw a line and subtract 160 from 167.

167 - 160 = 7

step 11 long division 487 divided by 32 Since 7 is less than 32 your long division is done. You have your answer: The quotient is 15 and the remainder is 7.

So, 487 ÷ 32 = 15 with a remainder of 7

For longer dividends, you would continue repeating the division and multiplication steps until you bring down every digit from the divdend and solve the problem.

3 0
3 years ago
Juanita has saved 15% of the money that she needs to buy a new bicycle. If she has saved $18, how much money does the bicycle co
yuradex [85]

Answer:

Step-by-step explanation:

180

7 0
3 years ago
Read 2 more answers
Which properties describe the graph of (x + 5)2 + (y – 10)2 < 169?
scZoUnD [109]

Answer:

its A

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • The mass of a cylinder made of barium with a height of 2 inches depends on the radius of the cylinder as defined by the function
    13·2 answers
  • What are the values of A,B and C?<br><br> Please show all the work on how you got your answer
    12·2 answers
  • YALL so im bored hmu <br> whats 420 - 22 tho
    8·2 answers
  • Which number is a factor of 22 but not a multiple of 2???
    7·2 answers
  • Solve for k. 3/4 k+3/8 k=12
    15·2 answers
  • Study the data set. What is the range? Click photo to enlarge <br><br>​
    5·2 answers
  • Graph 5x+y=2 and 5x-y=4
    10·1 answer
  • Remy drinks 2/1/4 cups of water every 1/4/5 hours.
    8·1 answer
  • PLEASE HELP!!! A $950 computeris on sale for 15% off. If sales tax is 6% will this computer cost including tax?
    12·2 answers
  • You exercised 24 hours each month for a year. How many hours did you exercise by the end of the year
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!