Answer:
E. cluster
Step-by-step explanation:
hope that helps.
<span>A quadratic equation of the form ax^2 + bx + c has a general solution of the form
x = - b +- b^2 - 4ac/2a
We shall use the expression under the radical in the formular method. The expression under the radical is called the discriminant.
If the discriminant D = b^2 - 4ac > 0 then the quadratic has two distinct real number solutions since the square root of any positive number is it self a positive number.
If D = b^2 - 4ac = 0 then we get expressions of the form (-b + 0) and (-b - 0). Regardless we end up with -b. This means when D = 0 we have one solution.
If D < 0 the quadratic equation has a conjugate pair of complex roots of the form a + bi</span>
Answer: b. 6(x + 4)
Step-by-step explanation:
The given word phrase = the product 4 more than x and 6
where , 4 more than x is equivalent to 
Therefore the algebraic expression for the given word phase "the product 4 more than x and 6"
=
Hence b. is the right option.
The algebraic expression for the given word phase is 
Answer:
0.75
Step-by-step explanation:
i did it and got the wrong answers and it said the right answer is 0.75
Answer: plan A lasts for 1.25 hours.
Plan B lasts for 0.5 hour.
Step-by-step explanation:
Let x represent the number of hours that plan A lasts.
Let y represent the number of hours that plan B lasts.
On Friday there were 4 clients who did Plan A and 8 who did Plan B. Elsa trained her Friday clients for a total of 9 hours. This means that
4x + 8y = 9 - - - - - - - - - - - - -1
On Saturday there were 2 clients who did Plan A and 3 who did Plan B. Elsa trained her Saturday clients for a total of 4 hours. This means that
2x + 3y = 4 - - - - - - - - - - - 2
Multiplying equation 1 by 1 and equation 2 by 2, it becomes
4x + 8y = 9
4x + 6y = 8
Subtracting, it becomes
2y = 1
y = 1/2 = 0.5
Substituting y = 0.5 into equation 1, it becomes
4x + 8 × 0.5 = 9
4x + 4 = 9
4x = 9 - 4 = 5
x = 5/4
x = 1.25
