Please answer the question and shhow how you got your answer please
Answers
Answer: 0
Step-by-step explanation: Two of the numbers are both negative you’re going to want to add those together first. -17 + (-3) = -20. What’s left is -20 + 20 when you add a positive (20) with a negative (-20) you’re going to need to ‘subtract’ so sort of like this : 20 - 20 and that equals 0
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Answers
3x + y = 11 Given
y = -3x + 11 Subtract 3x from both sides
This equation is now solved for y. Now, let's do the other equation. Make sure to solve it for the same variable.
-2x + y = 1 Given
y = 2x + 1 Add 2x to both sides
Now, let's set both equations equal to each other, since they both equal y.
2x + 1 = -3x + 11 Set both equations equal to each other
1 = -5x + 11 Subtract 2x from both sides
-10 = -5x Subtract 11 from both sides
2 = x Divide both sides by -5
Now, let's substitute x in for one of the equations we found earlier, so that we can find y.
y = 2x + 1 Given
y = (2)(2) + 1 Substitute the x-value, 2
y = 4 + 1 Multiply
y = 5 Add
So, x = 2 and y = 5.
Hope this helps!
y = 2x + 1
Now substitute this equation in for y into the other equation and solve:
3x+y = 11
3x+ (2x + 1)=11
5x + 1 = 11
5x = 11 - 1
5x/5= 10/5
x = 2
You can now plug this x-value back into either equation, and solve for y:
y = 2(x) + 1
y = 2(2) + 1
y = 5
Answers
Answer:
200 is 10 times as much as 20
Step-by-step explanation:
Let the number be y
as per the condition 200 is 10 times as much as y.
Solve for y:
10 times as much as x represents as
Then;
200 = 10y ......[1]
Division property of equality states that you divide the same number to both sides of an equation.
Divide by 10 to both sides in equation [1];
Simplify:
y= 20
Therefore, 200 is 10 times as much as 20.
How many factors make up this product ?
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To find this, you multiply both by 1/2 or divide by 2
The new dimensions are 3 by 4
6 divided by 2=3
8 divided by 2=4
a + b = a + c
a + b = b + a
Answers
Answer:
a + b = b + a
Step-by-step explanation:
The commutative property of addition allows us to "switch" values around an addition sign.
The first choice is a+b = a-b. The operation is changed; the problem is not just flipped around. This is not the commutative property.
The second choice is a+(b+c) = (a+b)+c. In this problem, the parentheses are switched; this is an example of the associative property, not the commutative property.
The third choice is a+b = a+c. The values that are added are changed, not flipped; this is not the commutative property.
The last choice is a+b = b+a. In this equation, the values are flipped around the addition symbol; this is the commutative property.
Option D is our correct answer.
a + b = b + a.
Given,
commutative property of addition.
7 + 8 + 3 = 7 + 3 + 8
4.6 + 11.4 = 11.4 + 4.6
We have to choose from the option that describes the commutativeproperty of addition.
- a + b = a – b
- a + (b + c) = (a + b) + c
- a + b = a + c
- a + b = b + a
What is the commutative property of addition?
It states that if we change the order of the values with the addition the answer remains the same.
4 + 2 = 2 + 4.
We have,
a + b = a – b
Here the order is the same on both sides but the answer is not the same on both sides.
a + (b + c) = (a + b) + c
This is a property of associative.
a + b = a + c
Here the values are not the same on both sides.
a + b = b + a
The values are the same on both sides and the order is changed.
This is the commutative property of addition.
Thus a + b = b + a is our correct answer.
Learn more about the properties of algebra here:
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