Solve the following pair of linear equations using substitution method
Answers
Answer:
(10, - 1 )
Step-by-step explanation:
Given the 2 equations
x - 3y = 13 → (1)
x + 2y = 8 → (2)
Rearrange (1) making x the subject by adding 3y to both sides
x = 3y + 13 → (3)
Substitute x = 3y + 13 into (2)
3y + 13 + 2y = 8
5y + 13 = 8 ( subtract 13 from both sides )
5y = - 5 ( divide both sides by 5 )
y = - 1
Substitute y = - 1 into (3) for corresponding value of x
x = 3(- 1) + 13 = - 3 + 13 = 10
solution is (10, - 1 )
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If the hot dog eating champion's goal is to eat 1 hot dog every 13 seconds, how many whole hot dogs does he expect to eat in 12 minutes?
Depict an angle 7pi over 4 in standard position
Whats the difference between 45 and 54
Answers
Answer:
9.81
Step-by-step explanation:
1/100 = 0.01
Therefore the answer is 9.81 as 2 will be rounded down.
Solve the following system of equations. Express your answer As an ordered pair in the format (a,b), with no spaces between the numbers or symbols.
Answers
Answer:
(x,y) = (-2,4)
Step-by-step explanation:
We have two equations:
Now let us us multiply equation (1) by 5, and equation (2) by 2:
and add the two equations to get:
Now we put this value of into equation(1) and solve for
:
Thus the solution to our system of equations is
Answer:
Make sure that you enter just (-2,4)
Answers
Answer:7
Step-by-step explanation:
4m+8=36
4(7)+8=36
28+8=36
36=36
Answer:
i think its 7
Step-by-step explanation:
Answers
Answer:28
Step-by-step explanation: 6.4x6.4 = 40.96
3.6x3.6=12.96
Final answer:
To evaluate the expression (6.4)² - (3.6)², square each of the numbers and then subtract the square of 3.6 from the square of 6.4 to give a result of 28.
Explanation:
The question asked is mathematics related and it requires to evaluate an expression: (6.4)² - (3.6)². This is a simple arithmetic problem that involves squaring numbers and subtraction.
Firstly, squaring a number means multiplying the number by itself. Hence, (6.4)² equals to 6.4 * 6.4 which gives 40.96. Similarly, (3.6)² equals to 3.6 * 3.6 which gives 12.96.
Then, subtract the squared number of 3.6 from the squared number of 6.4. That is: 40.96 - 12.96, and you'll have your answer, which is 28.
Learn more about Arithmetic here:
#SPJ11
Answers
example: ABC =~ DEF
Answer: it's congruent to
Step-by-step explanation:
Answers
The size of the larger prism is twice the size of the smaller one.
For example, as you can see from the base length of the triangular side: Larger is 3 units and the smaller is 1.5 units. 3÷2=1.5
So I did the same with the length of the base: 20÷2=10
Answer:
x=10
Step-by-step explanation:
right answer