Answer:
If the numbers next to the "x" are "carroted" ( ^ ) then the answer is
-3x^4 + 9x^3 -8x^2 -2x +12
Step-by-step explanation:
Basically, you just add the like terms together.
(a)
The formula for circumference is
your radius is 4mm so
which equals to
(b) type
in your calculator and round it off to the nearest hundred
this should be the answer: 25.133 mm
3p + 2c + 6b = 27
2p + 3c + 4b = 23
4p + 1c + 8b = 31
===============
take any 2 equations and eliminate a variable
3p + 2c + 6b = 27
4p + 1c + 8b = 31....multiply by -2
---------------------
3p + 2c + 6b = 27
-8p - 2c - 16b = - 62 (result of multiplying by -2)
--------------------add
-5p - 10b = - 35
Now take one equation, and the other equation that u have not used already, and eliminate the same variable.
4p + 1c + 8b = 31.....multiply by -3
2p + 3c + 4b = 23
---------------------
-12p - 3c - 24b = - 93 (result of multiplying by -3)
2p + 3c + 4b = 23
----------------------add
-10p - 20b = - 70
now take ur 2 equations that u eliminated the c in, and eliminate another variable
-5p - 10b = -35......multiply by -2
-10p - 20b = -70
---------------------
10p + 20b = 70 (result of multiplying by -2)
-10p - 20b = -70
-------------------add
0 = 0
when u get a result such as 0 = 0....this means there is infinite solutions to this problem
first since we have the variable "x" on both sides of the equation, we can subtract the lower number to make sure x is only on one side (subtract 10x from both sides)
20x + 4 = 10x + 100
10x + 4 =100
now we can subtract 4 from both sides
10x = 96
now we can divide both sides by 10 to isolate x
x = 9.6
hope this helped
Answer:
You got it wrong because you didn't distribute the 7 to the 3j.
Step-by-step explanation:
The answer should be 21j +70.
