3x+2 = 6x-13 what is x
Answers
Step-by-step explanation:
Answer:
x = 5
Step-by-step explanation:
Isolate x:
3x + 2 = 6x - 13
Subtract 3x from both sides:
2 = 3x - 13
Add 13 to both sides:
15 = 3x
Divide each side by 3:
5 = x
Related Questions
Could someone help me please :)
Y = -x + 5y = 2x - 7
PLS HELP MEYour current test average in Science is an 81. You’ve taken 5 tests. You only have one test remaining. You can raise your average to an 85. t or f
16 PS 19E question HelpSome friends played a board game. During the game, one unlucky player had to move back 9 spaces7 turns in a row. Find a number to represent that player's movements for those 7 turns
Answers
Answer:ididnt ask
Step-by-step explanation:
yes
Answers
Answer:
b = 1/2, -12.5
Step-by-step explanation:
13 = |2b+12|
Case 1:
13 = |2b+12|
13 = 2b + 12
1 = 2b
b = 1/2
Case 2:
13 = |2b+12|
13 = - (2b + 12)
13 = -2b - 12
25 = -2b
b = -12.5
So, the answer is b = 1/2 & -12.5
B) 0.8
C) 0.9
D) 0.75
Answers
0.85 is the probability that you will roll an even number or odd prime number
What is Probability?
It is a branch of mathematics that deals with the occurrence of a random event.
A twenty-sided number cube has 10 even numbers (2, 4, 6, 8, 10, 12, 14, 16, 18, 20) and 7 odd prime numbers (3, 5, 7, 11, 13, 17, 19).
To find the probability of rolling an even number or an odd prime number
We need to calculate the total favorable outcomes (even numbers and odd prime numbers) divided by the total possible outcomes (numbers 1 to 20).
Total favorable outcomes = 10 (even numbers) + 7 (odd prime numbers) = 18
Total possible outcomes = 20
Probability = Total favorable outcomes / Total possible outcomes = 17 / 20 = 0.9
Hence, 0.85 is the probability that you will roll an even number or odd prime number
To learn more on probability click:
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Answer:
0.85
Step-by-step explanation:
total samples cases = 20
chances that are even or odd prime are 17 chances
2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20
probability = 17/20
= 0.85
Answers
P = 12x2 - 6
Plugging in the given value of x,
P = 12 (1.5)^2 - 6
P = 21 inches
Assuming that the ends of the straw are not overlapping in forming the triangle, the perimeter is just equal to the original length of the straw.
Answers
Ax- 3x = -(3a+b)
x(A-3) = - (3a+b)
x = - (3a+b) / (A-3)
ax+b=3(x)+3(−a)
Multiply 3 by x to get 3x.
ax+b=3x+3(−a)
Move −1.
ax+b=−1⋅3a
Multiply −1 by 3 to get −3.
ax+b=−3a
Replace back in to larger expression.
ax+b=3x−3a
Since 3x contains the variable to solve for, move it to the left-hand side of the equation by subtracting 3x from both sides.
ax+b−3x=−3a
Factor out the GCF of x from each term in the polynomial.
x(a)+x(−3)=−b−3a
Factor out the GCF of x from ax−3x.
x(a−3)=−b−3a
Divide each term in the equation by (a−3).
x=−3a+b/a−3
Answer:
x=−3a+b/a−3
Answers
P(x)=x^4-4x^3-2x^2+12x+9=0
P(3)=3^4-4*3^3-2*3²+12*3+9=81-108-18+36+9=0
P(-1)=(-1)^4 - 4*(-1)^3 -2*(-1)²+12*(-1)+9=1+4-2-12+9=0
P'(x)=4x^3-12x²-4x+12
P'(-1)=4*(-1)^3-12*(-1)²-4*(-1)+12=-4-12+4+12=0
(-1) is a double root
Ok 3,-1,-1 are roots.
If the 4th root is not a real but a complex (a+ib), its conjugate will be also a root , there would be 5 roots and not 4
So, the 4th root is real and equal to 3 ( a double root)
x^4-4x^3-2x²+12x+9=0
==> x^4+x^3-5x^3-5x²+3x²+3x+9x+9=0
==>x^3(x+1)-5x²(x+1)+3x(x+1)+9(x+1)=0
==>(x+1)(x^3-5x²+3x+9)=0
==>(x+1)(x^3+x²-6x²-6x+9x+9)=0
==>(x+1)[x²(x+1)-6x(x+1)+9(x+1)]=0
==>(x+1)²(x²-6x+9)=0
==>(x+1)²(x-3)²=0
P(x)=(x+1)²*(x-3)²