Answer:
C. the order in which you add the numbers doesn't affect the sum.
Step-by-step explanation:
The Commutative Property for sum states that the order in which we add the numbers doesn't affect the sum of numbers. i.e.
(a + b) + c = a + (b + c)
Example, (5 + 4) + 2 = 9 + 2 = 11
5 + (4 + 2) = 5 + 6 = 11
Hence, Option C is only correct answer.
Eliminate y's
multiply 2nd equation by 3 and add to first
5x+3y=55
<u>12x-3y=30 +</u>
17x+0y=85
17x=85
divide both sides by 17
x=5
sub back
4x-y=10
4(5)-y=10
20-y=10
-y=-10
y=10
x=5
y=10
(5,10)
or you could subsitution with y=4x-10
(5,10)
Step-by-step explanation:
In×5z+In×7
=1.67z +1.95-8
=1.67z-6.05
Answer:
The overall average is 70 dollars for all weeks together
Answer:
<em>1</em>
Row 1: 445
Row 2: 541
Row 3: 637
<em>2</em>
349 + 4.80n
<em>3</em>
135
Step-by-step explanation:
<em>1</em>
For this, use the equation I gave you above to find the costs.
<em>2</em>
First, the cost of the printer will <em>NOT</em> change, for the number of printers Eddie needs to buy does not change, he only needs one. This already helps you figure out that 349 is <em>not </em>a coefficient to the variable, n. However, when it comes to the number of blank shirts Eddie needs to buy, the number of he gets <em>does </em>change, this is the dependent variable that makes the cost vary. Using the equation above, you can plug in any number.
For example, 20.
349 + 4.80(20) = 445
<em>3</em>
For this final part, I just kept using the equation until I got the closest number that is lower than 1000. In this case, 135 got me 997, and 136 was just a few decimals away from 1000, but it was still over.