Answer:
B
Step-by-step explanation:
Given
5x + y = 14 ( subtract 5x from both sides )
y = 14 - 5x
Substituting values of x into the right side allows the corresponding value of y to be found.
x = - 1 : y = 14 - 5( - 1) = 14 + 5 = 19
x = 0 : y = 14 - 5(0) = 14 - 0 = 14
x = 1 : y = 14 - 5(1) = 14 - 5 = 9
Hence the corresponding values of x and y are
x y
- 1 19
0 14
1 9
First of all, if we have 1 gram of a substance that has 0.52 gram of copper and 0.26 gram of zinc, the remainder will be:
Since we know that the remaining portion of the material is nickel, we have 0.22 gram of metal.
Now, Ben estimates that 1 gram of the substance has 0.2 gram of nickel. To find how many grams of metal are in 35 grams of the material, we are going to multiply the grams of the substance by the gram of nickel:
We can conclude that according to Ben, 35 grams of the content has 7 grams of metal.
But we know that in 1 gram of the substance are not 0.2 gram of nickel but 0.22. So let's multiply the grams of the material by 0.22 to find the actual grams of nickel in it:
We can conclude that 35 grams of the substance have 7.7 grams of metal.
<em>30, 20 and 10 are three numbers that are less than 40 and have 2 and 5 as factors.</em>
Answer:(-1,-3)
Step-by-step explanation:Solve for the first variable in one of the equations, then substitute the result into the other equation.
Two answers are n being 0 or 2.
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I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you out!
~Zoey
