Answer: x = (sqrt(7) + 2)/3 and
x = ( – sqrt(7) + 2)/3
Explanation:
3x^2 - 4x - 1 = 0
Divide both sides by 3:
3x^2/3 - 4/3x - 1/3 = 0/3
x^2 - 4/3x - 1/3 = 0
x^2 - 4/3x = 1/3
x^2 - 4/3x + (2/3)^2 = 1/3 + (2/3)^2
(x - 2/3)^2 = 1/3 + 4/9
(x - 2/3)^2 = 7/9
Sqrt both sides:
x - 2/3 = sqrt (7/9)
x - 2/3 = |sqrt(7)/3|
Set x -2/3 = sqrt(7)/3
=> x = (sqrt(7) + 2)/3
Set x - 2/3 = - sqrt(7)/3
=> x = ( - sqrt(7) + 2)/3
Answer:
screw this question
Step-by-step explanation:
To change from 15% to 25% he needs to add 10%.
If the solution is 50ml then he needs to add 10% which is 5ml... But if he adds 5 ml then the solution will be 55ml total, so that doesn't make sense. He has to take some of the solution that's not acid before adding the 5ml...
Answer:
p^2/r
Step-by-step explanation:
An equivalent expression is the expression in simplest form. Here apply exponent rules by multiplying the exponents of each term by 1/5.
1.Each method works differently the angles inside them is what matters.
2. <span> Manipulating algebra tiles can help people solve linear equations
3.</span><span>Distribute each term of the first polynomial to every term of the second polynomial. Remember that when you multiply two terms together you must multiply the coefficient (numbers) and add the exponents. But with Integers you multiply two integers with different signs
4.So you know how </span>
A monomial is a number, a variable or a product of a number and a variable.
<span>multiply each term in one polynomial by each term in the other <span>polynomial
Examples:
</span></span>
The answer is $48.
Divide her savings by 3 since it is only three-fourths of the game's cost.
$36÷3 = $12
Now you multiply the answer by 4 to get the final answer.
$12 × 4 = $48