Answer:
Step-by-step explanation:
May you explain what to do?
Answer:
1) isolate x for -x-5y-5z=2: x = -2 - 5y - 5z
substitute x = -2 -5y - 5z
{4(-2 - 5y - 5z) - 5y + 4z = 19}
{-2 - 5y - 5z + 5y - z = -20}
simplify
{-25y - 16z - 8 = 19}
{-6z - 2 = -20}
isolate z for -6z - 2 = -20: z = 3
substitute z = 3
{-25y - 16 * 3 - 8 = 19}
simplify
{-25y - 56 = 19}
isolate y for -25y - 56 = 19: y = -3
for x = -2 - 5y - 5z
substitute z = 3, y = -3
x = -2 - 5(-3) - 5 * 3
-2 - 5(-3) - 5 * 3 = -2
x = -2
x = -2, z = 3, y = -3
2)isolate x for -4x - 5y - z = 18: x = -(18+5y+z)/4
substitute x = -(18+5y+z)/4
{-2(-(18+5y+z)/4) - 5y - 2z = 12}
{-2(-(18+5y+z)/4) + 5y + 2z = 4}
simplify
{(-5y-3z+18)/2 = 12}
{(15y+5z+18)/2 = 4}
isolate y for (-5y-3z+18)/2 = 12: y = -(3z+6)/5
substitute y = -(3z+6)/5
{15((-3z+6)/5)+5z+18/2 = 4}
simplify
{-2z=4}
isolate z for -2z=4: z = -2
for y = - 3z+6/5
substitute z = -2
y = - 3(-2)+6/5
- 3(-2)+6/5 = 0
y = 0
for x = - 18+5y+z/4
substitute z = -2, y = 0
x = - 18+5*0-2/4
- 18+5*0-2/4 = -4
x = -4
x = -4, z = -2, y = 0
3) x = -1, z = -4, y = -4
4) x = 4, z = 0, y = 2
5) r = 1, t = 1, s = 3
6) x = 0, z = -3, y = 0
<u><em>work for 3, 4, 5, and 6 is below</em></u>
7660 million dollars divided by .70 which is the 7/10 in decimal form. Would be 10,942,857.14 dollars
Answer:
a = (p - b)/2
Step-by-step explanation:
Isolate the variable, a. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
PEMDAS is the order of operation, and =
Parenthesis
Exponents (& roots)
Multiplication
Division
Addition
Subtraction
~
First, subtract b from both sides:
p (-b) = 2a + b (-b)
p - b = 2a
2a = p - b
Next, divide 2 from both sides:
(2a)/2 = (p - b)/2
a = (p - b)/2
a = (p - b)/2 is your answer.
~
Answer:the answer is C
Step-by-step explanation: