PLEASE HELP QUESTION ATTACHED
Answers
Answer:
(6,3)
Step-by-step explanation:
x + 3y = 15
4x + 2y = 30
This system of equations can either be solved by elimination method or substitution method or both
We are going to use both method to solve this system of education
First we are gong to use elimination method to find the value of y
x + 3y = 15 -------------(1)
4x + 2y = 30 -----------(2)
Using the elimination method, to eliminate x, we want to make coefficients of x the same, to do that we multiply equation (1) by 4
4x + 12y =60 --------------(3)
subtract equation (2) from equation (3)
(4x-4x =0 12y - 2y = 10y 60 -30=30 )
We will have;
10y = 30
Divide 10 by both-side of the equation
10y/10 = 30/10
y = 3
We will use substitution method to get the value of x,
We will now substitute y=3 in equation (1)
x + 3y = 15
x + 3(3) = 15
x + 9 = 15
Subtract 9 from both-side of the equation
x +9 - 9 = 15 -9
x = 6
The solution to the system of the equations is x=6 and y =3
(6, 3)
Related Questions
Mrs. Payne needs 35 notepads she can buy them in packs of 10 notepads or a single pads what are all the different ways of Mrs. Payne can buy the notepads
Substitution method of y=x+5 and 5x+y=3
Please answer the following 4 questions
3x+5=245Helpppppppppppp
each month, how long will it take him to pay off his mortgage?
A. 217 months
B. 197 months
c. 177 months
D. 222 months
Answers
Answer: 177 months
Step-by-step explanation:
Answer: 177 months
Step-by-step explanation:
Answers
Answer:
The two different numbers are 8.211 and 8.209 that round to 8.21 when rounded to the nearest hundredth
Step-by-step explanation:
Given : Number 8.21.
To find : Name two different numbers that round to 8.21 when rounded to the nearest hundredth?
Solution :
To round to the nearest hundredth, we use the thousandths place to determine whether the hundredths place rounds up or stays the same.
We have top round such that number became 8.21.
So, There are two ways to pick the number
1) The thousandths place value is greater than or equal to 5 and hundredths place is 0 then it round to required number.
Example - 8.205,8.206,8.207,8.208,8.209
2) The thousandths place value is less than 5 and hundredths place is 1 then it round to required number.
Example - 8.211,8.212,8.213,8.214
Therefore, The two different numbers are 8.211 and 8.209 that round to 8.21 when rounded to the nearest hundredth
8.211
8.209
8.214
8.21145683204
etc...
Just pick whichever two numbers you like :)
B. Based on your answer to part a, what expression represents Melanie's age?
C. If Melanie is 18 years old , what equation can you write to solve the problem?
D. Solve the equation. How old are kevan and Katie?
Answers
k=katie's age
ke=kevan's age=k-6 (Kevan is 6 years younger than his sister Katie)
B:m=Melanie's age=2*ke=2k-12 (Melanie is twice as old as kevan)
C and D: M=18
so this means that
18=2*ke
if we divide both by 2, we get:
9=ke
Kevan is 9 years old
and 18=2k-12
add12 to both sides:
30=2k
15=k
Katie is 15 years old
Answer:
A- k-6
B- 2(k-6)
C- 18 = 2 (k-6)
D- katie- 15, kevan 9
Step-by-step explanation:
Answers
Answer:
the answer is
c. 16,273,200
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
Answers
Answer:
y = 4x + 6
Step-by-step explanation:
2 = 4[-1] + b
-4
6 = b
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Answers
Answer:
1
Step-by-step explanation:
prime factors of 2 are 1, 2
of 3 are 1,3
what's common between both is 1, so that's the answer