Y= 6 + x
Plug the numbers into the equations, for each ordered pair substitute the first number (2) for x and the second number (8) for y...
Do the same thing with (6, 12) and if the number on each side of the equals sign is the same for both ordered pairs then you have the solution.
Hope that helps!
Answer:
2. 4a+2c = 5000
4. a + c = 1600
Step-by-step explanation:
Answer:
mark
Step-by-step explanation:
Mark lives closer because 0.25 is less than 0.4
on the number line 0.25 is before 0.4
Answer:
And
Step-by-step explanation:
For this case we assume that for the first square we have the following dimensions:
And we know that:
And the area for the second square would be:
And we know that the sum of areas is 65 so then we have this:
And replacing we got:
We can divide the last expression by 2 and we got:
And we can factorize the last expression like this:
And we have two solutions for and we got:
Since the length can't be negative we have this:
And
Answer:
Step-by-step explanation: We have been given 4 expressions. We are asked to choose the expression that represents sum of cubes.
We know that sum of cubes is in form .
We can see that 1st and 2nd option has a negative sign. Therefore, these options cannot be sum of cubes.
Let us check 3rd and 4th options one by one.
We can rewrite our expression by writing terms as cubes:
Therefore, expression is a sum of cubes.
In 4th expression, we can see that . We cannot represent it as a cube. Similarly, we cannot represent as a cube. Therefore, 4th expression is not correct.