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3 years ago

I need help besties

Mathematics

1 answer:

pishuonlain [190]3 years ago

5 0

Answer:

Step-by-step explanation:

Area. of circle =πr²

Area. of circle =3×2×2

Area. of circle =12ft²

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Which statement describes if there is an extraneous solution to the equation √x-3 = x-5? A. there are no solutions to the equati

Brrunno [24]

Remember that an extraneous solution of an equation, is the solution that emerges from solving the equation but is not a valid solution.

Lets solve our equation to find out what is the extraneous solution:
 $\sqrt{x-3} =x-5$
$(\sqrt{x-3})^2 =(x-5)^2$
$x-3=x^2-10x+25$
$x^2-11x+28=0$
$(x-4)(x-7)=0$
$x-4=0$ and $x-7=0$
$x=4$ and $x=7$

So, the solutions of our equation are $x=4$ and $x=7$ . Lets replace each solution in our original equation to check if they are valid solutions:
- For $x=7$
$\sqrt{x-3} =x-5$
$\sqrt{7-3} =7-5$
$\sqrt{4} =2$
$2=2$
We can conclude that 7 is a valid solution of the equation.

- For $x=4$
$\sqrt{x-3} =x-5$
$\sqrt{4-3} =4-5$
$\sqrt{1} =1$
$1 \neq 1$
We can conclude that 4 is not a valid solution of the equation; therefore, 4 is a extraneous solution.

We can conclude that the correct answer is: D. the extraneous solution is x = 4

7 0

3 years ago

What is 4/5 divided by 1/8

Vikki [24]

Answer:

6.4

Step-by-step explanation:

5 0

3 years ago

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The length of the prism is m. The width of the prism is m. The height of the prism is m. The prism holds a total of cubes. The v

Lelechka [254]

Answer:

True.

Step-by-step explanation:

Since volume of any 3-D figure is length*width*height.

Given

length=m

width=m

height=m

According to the given we can see that the 3-D figure is a square prism.

V=m*m*m

V=m^2*m

V=m^3

Hope this helps ❤❤❤

8 0

3 years ago

Pls help me out!!!!!

Dahasolnce [82]

Answer:

cab=62

cba=48

x=12

Step-by-step explanation:

70+x+50+4x=180

combine like terms

120+5x=180

-120. -120

5x= 60

isolate x

5x=60

x=12

6 0

3 years ago

If a = 1 and b = -3, what is the value of |a - 2| + |2 - b|?

Rina8888 [55]

Answer:

D 6

Step-by-step explanation:

1-2=-1 and the absolut value of -1 is 1

2--3=5

5+1=6

5 0

4 years ago

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