Describe the nature of the roots for this equation 2x^2+5x-7=0

x = -7/2 and x = 1

So, there are 2 roots of this equation.

And the roots are real numbers.

Step-by-step explanation:

We need to describe the nature of roots for this equation

2x^2+5x-7=0

2x^2-2x+7x-7=0

2x(x-1)+7(x-1)=0

(2x+7)(x-1)=0

2x+7=0, x-1=0

2x=-7, x =1

x = -7/2 and x = 1

So, there are 2 roots of this equation.

And the roots are real numbers.

answer: for each 3 girls there is 2 boys . 3: 2

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the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: