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qwelly [4]
3 years ago
9

The difference between a number and its square is 20. Find thenumbers.​

Mathematics
1 answer:
Elena L [17]3 years ago
4 0

Answer:

-4 or 5

Step-by-step explanation:

let number be x

x²-x=20

Rearrange

x²-x-20=0

(x+4)(x-5)=0

Separate

x+4=0, x-5=0

x=-4 or 5

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y is greater or less then 4

Step-by-step explanation:

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It cost you $12 to start up your
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let no. of hours be x.

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6 0
3 years ago
Compute a value for t that satisfies the equation below. "-2/3" t - 2 = - 3
Dima020 [189]

Answer:

t = 3/2

Step-by-step explanation:

Instead of randomly guessing values of "t" that will satisfy the equation, you can easily find the correct value by solving the equation in terms of "t". In other words, you can set the equation equal to "t" to find the final answer.

(-2/3)t - 2 = -3                             <----- Original equation

(-2/3)t = -1                                   <----- Add 2 to both sides

t = 3/2                                        <----- Divide both sides by -2/3

You can check this value by plugging it into "t" and determining whether both sides of the equations will be equal.

(-2/3)t - 2 = -3                            <----- Original equation

(-2/3)(3/2) - 2 = -3                      <----- Plug 3/2 into "t"

-6/6 - 2 = -3                               <----- Multiply -2/3 and 3/2

-1 - 2 = -3                                    <----- Simplify -6/6

-3 = -3                                        <----- Subtract

6 0
2 years ago
Lucas made a recipe that needed five-
ser-zykov [4K]

Answer:

2/3 cup

Step-by-step explanation:

Well we see that they both have a common demonitator...6

Next we see the difference on the top of 5-1

After this we add 4 back mon top of the bottom(6)

It can be simplified from 4/6--> 2/3

7 0
3 years ago
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