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3 years ago

Which of the following cannot be in the solution set of < 1? -1 -2 1 2

Mathematics

1 answer:

Dovator [93]3 years ago

3 0

1 and 2 do not fit because 1 is equal to 1 and 2 is greater than 1, but it's asking for numbers less than 1.

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hope it helps

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Pre-Calc help:

stepladder [879]

Answer:

$8x^2+8y^2-79x-32y+95=0$

Step-by-step explanation:

Let the equation be : $x^2+y^2+2gx+2fy+c=0$

The point (1,1) must satisfy this equation.

$1^2+1^2+2g*1+2f*1+c=0\\2g+2f+c=-2---(1)$

Similarly, the point (1,3) must satisfy:

$1^2+3^2+2g*1+2f*3+c=0\\1+9+2g+6f+c=0\\2g+6f+c=-10---(2)$

Also for the point (9,2), we have:

$9^2+2^2+2g*9+2f*2+c=0\\81+4+18g+4f+c=0\\18g+4f+c=-85---(3)$

Solving the equations (1), (2) and (3) simultaneously, we get:

$g=-\frac{-79}{16},f=-2,c=\frac{95}{8}$

We Substitute this values to get:

$x^2+y^2+2(\frac{-79}{16})x+2(-2)y+\frac{95}{8}=0$

$x^2+y^2-(\frac{79}{8})x-4y+\frac{95}{8}=0$

Multiply through by 8 to get:

$8x^2+8y^2-79x-32y+95=0$

8 0

4 years ago

Wyatt owns a new store on the boardwalk by the beach. He plans to sell beach balls in his store. Each one costs him $4.95. He wa

KonstantinChe [14]

Wyatt should charge $9.26 before 8% sales tax if he does not want customers to pay more than $10.00

They will actually be charged $10 exactly.

9.26*.08= .74

.74+9.26= 10

4 0

3 years ago

Are -3.5 and -14/4 the same value? plzzz i need helpppp

mafiozo [28]

Answer: Yes, they both equal -7/2

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Simplify the expression x^2+x-2/8x^2+4x/3x^2+10x+8

irina [24]

Answer:

Step-by-step explanation:

x² + x - 2 = x² - x +2x -2 = x(x - 1) + 2*(x-1) = (x-1)(x+2)

8x² + 4x = 4x ( 2x + 1)

3x² + 10x + 8 = 3x² + 6x + 4x + 4*2 =3x * (x + 2) + 4 * ( x + 2) = (x + 2)(3x + 4)

6 0

3 years ago

Can anyone help me?

goldfiish [28.3K]

Given:

A right angle triangle ABC, right angled at C.

To find:

The measure of θ.

Solution:

In a right angle triangle,

$\tan \theta=\dfrac{Opposite}{Adjacent}$

In triangle ABC,

$\tan \theta=\dfrac{AC}{BC}$

$\tan \theta=\dfrac{2.7}{5}$

$\tan \theta=0.54$

It can be written as

$\theta=\tan^{-1}0.54$

$\theta\approx 28.369$

Therefore, the measure of θ is 28.369.

5 0

3 years ago