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
ella [17]
3 years ago
14

How can you use substitution to solve a system of linear equations?

Mathematics
1 answer:
makvit [3.9K]3 years ago
6 0
Step 1:
Solve one of the equations for either x = or y = .
Step 2:
Substitute the solution from step 1 into the other equation.
Step 3:
Solve this new equation.
Step 4:
Solve for the second variable.

Example 1: Solve the following system by substitution
Substitution Method Example
Solution:
Step 1: Solve one of the equations for either x = or y = . We will solve second equation for y.
solution step 1
Step 2: Substitute the solution from step 1 into the second equation.
solution step 2
Step 3: Solve this new equation.
solution step 3
Step 4: Solve for the second variable
solution step 4
The solution is: (x, y) = (10, -5)
Hope this helps!
You might be interested in
The Cougars basketball team sold tins of flavored popcorn as a fundraiser. The players competed for prizes to see who could sell
vekshin1

Answer:

1/2 percent

Step-by-step explanation:

If you look at the box, the middle number is 12 or since its the middle "1/2"

so the fraction would be 1/2, hope this helped.

3 0
3 years ago
Whoever gets this correct first gets brainlest !!
scoray [572]

Answer:

41.8

Step-by-step explanation:

The rectangles are similar by a factor of 10, so simply divide the measure by 10 to get the length of the smaller one.

7 0
3 years ago
X+5/2=10 linear equations step by step explantion
Vera_Pavlovna [14]

See attachment for math work and answer.

6 0
3 years ago
Five ticets to a baseball game cost 60$. How much do 2 ticets cost
Leno4ka [110]

Answer:

$24

Step-by-step explanation:

Since you know 5 tickets equal to $60, and you want to find the cost of one ticket, you would divide 60 by 5. 60/5=12. So each ticket costs 12 dollars. But you want to find the cost of two. So multiply $12 by two to get $24 dollars per two tickets.

4 0
3 years ago
Two standardized​ tests, a and​ b, use very different scales of scores. the formula upper a equals 40 times upper b plus 50a=40×
Leona [35]
Adding (or subtracting) a constant to every data value adds (or subtracts) the same constant to measures of position such as center,percentiles, max or min.

Its shape and spread such as range, IQR, standard deviation remain unchanged.
When we multiply (or divide) all the data values by any constant, all measures of position (such as the mean, median, and percentiles) and measures of spread (such as the range, the IQR, and the standard deviation) are multiplied (or divided) by that same constant.
Part A:

The lowest score is a measure of location, so both addition and multiplying the lowest score of test B by 40 and adding 50 to the result will affect the lowest score of test A.

Thus, the lowest score of test A is given by 40(21) + 50 = 890

Therefore, the lowest score of test A is 890.



Part B:

The mean score is a measure of location, so both addition and multiplying the mean score of test B by 40 and adding 50 to the result will affect the lowest score of test A.

Thus, the mean score of test A is given by 40(29) + 50 = 1,210

Therefore, the mean score of test A is 890.



Part C:

The standard deviation is a measure of spread, so multiplying the standard deviation of test B by 40 will affect the standard deviation but adding 50 to the result will not affect the standard deviation of test A.

Thus, the standard deviation of test A is given by 40(2) = 80

Therefore, the standard deviation of test A is 80.



Part D

The Q3 score is a measure of location, so both addition and multiplying the Q3 score of test B by 40 and adding 50 to the result will affect the Q3 score of test A.

Thus, the Q3 score of test A is given by 40(28) + 50 = 1,170

Therefore, the Q3 score of test a is 1,170.



Part E:

The median score is a measure of location, so both addition and multiplying the median score of test B by 40 and adding 50 to the result will affect the median score of test A.

Thus, the median score of test A is given by 40(26) + 50 = 1,090

Therefore, the median score of test A is 1,090.



Part F:

The IQR is a measure of spread, so multiplying the IQR of test B by 40 will affect the IQR but adding 50 to the result will not affect the IQR of test A.

Thus, the IQR of test A is given by 40(6) = 240

Therefore, the IQR of test A is 240.
6 0
3 years ago
Other questions:
  • The walls and ceiling of a storage shed are made of aluminum. The storage shed measures 8 feet wide, 6 feet long, and 5 feet tal
    9·2 answers
  • Writing linear equations
    10·1 answer
  • Which arc must be a major arc?
    9·1 answer
  • A consumer testing service tested whether the average baking time of whole wheat bread in gas ovens was less than the average ba
    5·1 answer
  • A science fair has 180 entries. There<br> are 72 entries from sixth grade<br> students.
    15·1 answer
  • HELP PLEASEEEE!!!!!!!!!!
    11·2 answers
  • Which of these shows the following expression factored completely? 6x2 – 13x +5 ​
    7·1 answer
  • 0.12 times 0.08 divided by 2.40​
    13·2 answers
  • Need help with this please! best answer will get brainliest!!
    14·1 answer
  • Plsefgrffghttgrewe helppppppppppppppppppppppppppppp
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!