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2 years ago

2x^2-7x-15put this function into standard form

Mathematics

1 answer:

kari74 [83]2 years ago

8 0

Answer:

It is already in standard form. $2x^2-7x-15$ is correct.

Step-by-step explanation:

The standard form of a quadratic equation (which this equation is since there is an $x^2$ term) is described as $ax^2+bx+c=0$ , where a≠0.

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The average income, I, in dollars, of a lawyer with an age of x years is modeled with the following function: I = -425x^2 + 45,5

lord [1]

We are given

The average income, I, in dollars is

$I=-425x^2+45500x-650000$

(a)

now, we are given

average income is $275000

so, $I=275000$

now, we can set them equal

and then we can solve for x

$275000=-425x^2+45500x-650000$

$-425x^2+45500x-925000=0$

we will have to use quadratic formula

$x=\frac{-45500+\sqrt{45500^2-4\left(-425\right)\left(-925000\right)}}{2\left(-425\right)}:\quad \frac{-\sqrt{45500^2-1572500000}+45500}{850}$

$x=\frac{-45500-\sqrt{45500^2-4\left(-425\right)\left(-925000\right)}}{2\left(-425\right)}:\quad \frac{\sqrt{45500^2-1572500000}+45500}{850}$

we get

$x=27.28199$

$x=79.776$

we need to find youngest age

It means that we need to choose smallest value

so,

$x=27$ ............Answer

(b)

we are given

x=40

so, we can plug it and find I

$I=-425(40)^2+45500(40)-650000$

$I=490000$ ..............Answer

6 0

3 years ago

Line n is parallel to Line P. Find the measure of each angle.<br> Please help

Margaret [11]

Answer:

m<1=140

m<2= 40

m<3= 140

m<4= 40

m<5=140

m<6= 40

m<7= 140

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2 years ago

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Pip was thinking of a number subtracts 13 and gets answer of 30.3 what was original number

olasank [31]

Answer:

393.9

Step-by-step explanation:

Multiply 30.3 with 13.. Will get the answer 393.9

30.3= x / 13

X = 30.3 x 13

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sasho [114]

14-6=8 and its 10 x1

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3 years ago

Find the next two terms in this sequence. 1/2, 3/4, 7/8, 15/16

Dominik [7]

Answer 17/18 , 19,20

Step-by-step explanation:

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2 years ago

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