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ira [324]
3 years ago
13

Find the solutions for 6x^2 -7x-20=0

Mathematics
1 answer:
Ugo [173]3 years ago
4 0

Answer:

x=5/2, x=-4/3

Step-by-step explanation:

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What is the cube root of 8x^27?<br> A) 2x^3<br> B) 2x^9<br> C) 4x^3<br> D) 4x^9
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B) 2x^9

Step-by-step explanation:

i hope that helps

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Last yearrhere were 1436 8th grade students enrolled at your school. This year there are 1220. What is the percent change in the
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Thirty-two jelly beans are shared by 8 students. How many jelly beans will<br> each student get?
Katyanochek1 [597]

Answer:

4

Step-by-step explanation:

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8 0
3 years ago
How do I write an algebraic expression using words for a - b please respond urgently I need to this
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Answer:

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7 0
3 years ago
Two numbers whose sum is 44 and whose product is a maximum
Mashcka [7]

Answer:

x = y = 22

Step-by-step explanation:

It would help to know your math course. Do you know any calculus? I'll assume not.

Equations

x + y = 44

Max = xy

Solution

y = 44 - x

Max = x (44 - x)                    Remove the brackets

Max = 44x - x^2                   Use the distributive property to take out - 1 on the right.

Max = - (x^2 - 44x )               Complete the square inside the brackets.

Max = - (x^2 - 44x + (44/2)^2 ) + (44 / 2)^2 . You have to understand this step. What you have done  is taken 1/2 the x term and squared it. You are trying to complete the square. You must compensate by adding that amount on the end of the equation. You add because of that minus sign outside the brackets. The number inside will be minus when the brackets are removed.

Max = -(x - 22)^2 + 484

The maximum occurs when x = 22. That's because - (x - 22) becomes 0.

If it is not zero it will be minus and that will subtract from 484

x + y = 44

xy = 484

When you solve this, you find that x = y = 22 If you need more detail, let me know.


4 0
3 years ago
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