Hey !! here is your answer --
(5.7+2.2)-1.1
= 7.9 -1.1
= 6.8
In order to solve you get x by itself:
5-x=12
-5 -5
-x=7
divide by negative 1
Call the two equations above A and B, in order to not confuse them.
A: -2x + 6y = -38
B: 3x - 4y = 32
For this system we have opposites in x and y, so Elimination (or Linear Combination) works best. Either variable works, so let's work with x first and multiply A by 3 and B by 2. This is done so we get opposites in A and B then when added together give zero.
-2x + 6y = -38 ------> multiply by 3 ----> -6x + 18y = -114
3x - 4y = 32 ------> multiply by 2 -----> 6x - 8y = 64
Now we add the new equations. The -6x and 6x are opposites and go away. We are left with
10y = -50. We divide both sides by 10 and get that y = -5.
Now we take y = -5 and put it into an original equation. Let's use A.
-2x + 6y = -38 the original equation A
-2x + 6(-5) = -38 we found y = -5
-2x + (-30) = -38 evaluating and multiplying
-2x - 30 = -38 apply the parentheses
-2x = -8 add 30 to both sides
x = 4 divide on both sides by -2
Thus x = 4 and y = -5, or (4, -5) is the solution.
Answer:
33π square feet
Step-by-step explanation:
Volume = base area × height
132π = base area × 4
or, base area = 132π/4
or, base area = 33π
Answered by GAUTHMATH
Answer:
7+3x=Y
Step-by-step explanation:
Y= the total ammount she pays.
X= the number of games she wants to play.
$7 for the "shoes" and $3 for each game she wants to play
7+(3*4)= Y
7+12= $19
$73 = 3x + 7
-7 -7
$66 = 3x
66/3 = 3x/3
22 = x
x=22
