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Akimi4 [234]
3 years ago
9

HELP PLEASE . Help solve while using elimination method!!!!

Mathematics
2 answers:
Gnesinka [82]3 years ago
8 0

I will do #1 to show you how to solve these:

Equation 1: 2x + y = 6 → -1(2x + y = 6) → -2x - y = -6

Equation 2: 3x + y = 10 → 1(3x + y = 10) → 3x + y = 10

Now that one of the variables (y) has the same coefficient but opposite signs, we can add the two equations together to eliminate "y":

-2x - y = -6

+ <u>3x + y = 10</u>

x = 4

Now that we know that x = 4, we can plug "4" in for "x" into Equation 1 <em>or 2</em> to solve for "y". <em>I am going to use Equation 1</em>

Equation 1: 2x + y = 6 → 2(4) + y = 6 → 8 + y = 6 → y = -2

Answer: x=4, y=-2

NOTE: You can plug both x and y into the other equation to check that your answer is correct.

german3 years ago
4 0
Use photo math you are welcome
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I need help with this question fast plz help me
maw [93]

Answer:

100 feet apart

Step-by-step explanation:

Each line represents 40 feet. Ayla is 6 lines past 0 and Ahmad is 4 feet past 0. 6 times 10 is 60 and 4 times 10 is 40. 60+40=100 feet apart

5 0
3 years ago
8) 8 kg of apples cost Rs.800, what is the cost of 15 kg of apples?​
Rama09 [41]

Answer: 4

Step-by-step explanation:Using unitary method :-

5 kg apple → 600 Rs

1 kg apple →

5

600

​

  = 120 Rs

27 kg apple →120×27=3240 Rs

8 0
3 years ago
The product of two positive integers plus their sum is 95. The integers are relatively prime, and each is less than 20. What is
creativ13 [48]
Let the fist integer be x, the second is x+20
the product of the numbers is:
x(x+20)
the sum of the numbers is:
x+x+20=2x+20
the sum of the above operations will give us:
2x+20+x^2+20x=95
x^2+22x+20=95
this can be written as quadratic to be:
x^2+22x-75=0
solving the above we get:
x=3 and x=-25
but since the integers should be positive, then x=3
the second number is x+20=3+20=23
hence the numbers are:
3 and 23
3 0
4 years ago
30 times what equals 100
nekit [7.7K]
30x = 100 , x = 10/3 ......anything to ask please pm me
3 0
3 years ago
Read 2 more answers
Vinnie Testerverte is standing on the 40 yard line of the Washington Redskins when he throws a pass towards his end zone. The
drek231 [11]

Answer:

a.35.25

b. 42.56

c.23.06

Step-by-step explantion

Just subsitute 30, 15, and 5 for x each time for each question

ex:

y=-0.0975(5)^(2)+3.9(5)+6

6 0
3 years ago
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