The result correct of this expression is 38
-
In a numeric expression, we first resolve the numbers that are in symbol, such as:
- parentheses, square brackets and braces.
<h3>
</h3>
The signs calculated in order are:
- multiplication/division, addition/subtraction.
<h3>The sign rules are</h3>
- ( - ) = +
+ ( + ) = +
- ( + ) = -
+ ( - ) = -
<h3>Resolution </h3>
So, the answer correct is <u>38</u>
Answer:
(2,1)
Step-by-step explanation:
So the first thing you want to do is substitute. You want to plug in the equation for y in for the y value above.
So you would do 3x+4(x-1)=10. As you can see we took the bottom equation and put it in for the top equation. We did this so we only have x s and no y s.
Now you would solve. You would distribute first. You would get 3x+4x-4=10. Now combine like terms. 3+4 is 7 so you would get 7x-4=10.The next thing you want to do is get the 7x by itself so move the 4.You would get 7x=14. Now divided both sides by 7 because you want to get the x by itself.
You would get x=2. Now for the y value just plug it in for an equation above. The easier one would be y=x-1. y=(2)-1 will equal 1. You write your final answer in (x,y) style. Your final answer will then be (2,1)
Answer:
c.) in the correct answer
-10 = -2 + 1/2d
Add 2 to both sides to get D by itself
-8 = 1/2d
Multiply both sides by the denominator, 2, to get rid of the fraction.
Your answer is d = -16
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