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NISA [10]
3 years ago
13

X+y=4 and x-y=6 substitution

Mathematics
2 answers:
klasskru [66]3 years ago
5 0
Both y’s would automatically cancel so all you have left is 2x=10. divide 2 on each side and the 2s on the left cancel. 10/2=5 so x=5. then substitute the 5 into either equation (preferably x+y=4). then subtract 5 on each side and the 5s on the left again cancels out. so you have y=4-5 and y= -1. hope this helps you!!
vlabodo [156]3 years ago
4 0
Y = -1
x = 5
jeng jeng jeng
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jeyben [28]
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3 0
3 years ago
Two student clubs were selling t-shirts and school notebooks to raise money for an upcoming school event. In the first few minut
mixas84 [53]

Using a system of equations, it is found that the cost of a t-shirt is of $3 and the cost of a notebook is of $5.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

The variables are given as follows:

  • Variable x: Cost of a t-shirt.
  • Variable y: Cost of a notebook.

Considering the costs of the purchases of Clubs A and B, the matrices give the equations as follows:

  • 3x + 2y = 19.
  • x + y = 8 -> y = (8 - x).

Hence, replacing the second equation into the first:

3x + 2(8 - x) = 19

x = 3.

y = 8 - x = 8 - 3 = 5.

The cost of a t-shirt is of $3 and the cost of a notebook is of $5.

More can be learned about a system of equations at brainly.com/question/24342899

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7 0
2 years ago
Y MORE THAN 4 is -36 translate for me please into math symbols then solve problem (list steps)
Sphinxa [80]
y + 4 = -36&#10;&#10;Subtract 4 both sides.&#10;&#10;y = -40&#10;&#10;Check solution. &#10;&#10;-40 + 4 = -36&#10;&#10;This is correct.&#10;&#10;You're welcome. &#10;Observe below please. 
4 0
3 years ago
Find a rational number halfway in between the two numbers. three sevenths and one tenth
strojnjashka [21]
Answer:
The rational number is : 37/140

Explanation:
The first number given is three sevenths which can be written as 3/7
The second number given is one tenth which can be written as 1/10

Now, we want to get the midpoint between these two numbers. The midpoint can be calculated as follows:
midpoint = (first number + second number) / 2
midpoint = [(3/7) + (1/10)] / 2 
midpoint = 37/140

Hope this helps :)
4 0
3 years ago
Read 2 more answers
One can convert temperature from Fahrenheit into Newton using the formula N=11/60(F-32) . What is the temperature in Fahrenheit
Rasek [7]

We are given

N=\frac{11}{60} (F-32)

Since, we have to solve for F

so, we will isolate F on anyone side

step-1:

Multiply both sides by 60

60\times N=60\times \frac{11}{60} (F-32)

60N=11 (F-32)

step-2:

Divide both sides by 11

\frac{60N}{11} =\frac{11(F-32)}{11}

\frac{60}{11}N =F-32

step-3:

Add both sides by 32

\frac{60}{11}N+32 =F-32+32

\frac{60}{11}N+32 =F

so, we get

F=\frac{60}{11}N+32................Answer

5 0
3 years ago
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