x = a number
7 + 2x = 21
Subtract 7 from both sides
2x = 14
Divide both sides by 2
x = 7
7 is the only number that makes this sentence true.
Not 100% sure but they should equal 22 because they are across from each other they would be the same answer so you set it equal to each other and solve for the answer
well first you have to get x and y on separate sides so subtract x by both sides to put x on the right side.
now you have y = 5 - x
to graph that let's throw in some numbers for x and y and make a function table
x, y
1, 4
2, 3
3, 2
4, 1
5, 0
6, -1
and so forth
as you can see as x increases in value, y decreases in value
all you have to do now is plot those points on a graph
Answer: 345;275
Step-by-step explanation:
Lest say v_1 the speed of the slowest plane
v_2 the speed of the fasterst plane
For this case we have by definition that the volume of a cylinder is given by:
Where:
r: It's the radio
h: It's the height
We have as data that:
Substituting:
We cleared h:
Thus, the height of the cylinder is 2.25 inches.
Answer: