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3 years ago

Solve x^2 - x = 2 using the quadratic formula. Show your work.

1 answer:

8 0

The quadratic formula is the result of completing the square for ax^2+bx+c=0 when a,b, and c are unknown values. This result is:

x=(-b±√(b^2-4ac))/(2a), we have x^2-x-2=0 so

x=(1±√(1+8))/2

x=(1±√9)/2

x=(1±3)/2

x=-1 and 2

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Tessa has $42 to spend at the county fair. Her admission

Semenov [28]

Answer

g is less than or equal to 34.50

Step-by-step explanation:

$42-$7.50=$34.50

7 0

3 years ago

A shop keeper has offered an item for sale. Its label price is Rs . It is not sold in one-month period and after one month its l

BigorU [14]

Answer:

x = Rs 20,833.33

the value of x is Rs 20,833.33

Step-by-step explanation:

Let x,y and z represent the price of the item initially, after one month and after two months respectively.

Given that;

after one month its label price is reduced by 20%

y = x - 20% of x

y = x - 0.20x

y = 0.80x ........1

after 2 months its reduced price is further reduced by 10% and then sold it for Rs 15000.

z = y - 10% of y

z = y - 0.10y

z = 0.90y ........2

Substituting equation 1 into 2;

z = 0.90(0.80x)

z = 0.72x

Also z = Rs 15000

So,

z = 0.72x = Rs 15000

0.72x = Rs 15000

x = Rs 15000/0.72

x = Rs 20833.33333333

x = Rs 20,833.33

the value of x is Rs 20,833.33

5 0

3 years ago

Use the rectangle below to answer both parts of the question.

trasher [3.6K]

Answer:

part 1= "72=(2w)+(w-15)"

part 2= "29"

I'm not sure if they want "w = abc"

I used that equation to solve part 2

Hope this helps you, I've been where you are

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3 years ago

Two angles are supplementary. If Angle M is 2x² and Angle P is 130°, then find the value of x and the measure of each missing an

xenn [34]

Answer:

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2 years ago

I Need An Answer Please ❤️

damaskus [11]

I would have to say 32,4 but i would double check it

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3 years ago