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igor_vitrenko [27]

2 years ago

13

Someone please help with this.

1 answer:

morpeh [17]2 years ago

7 0

Answer:

8.2

Step-by-step explanation:

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Can please someone help me? The question is in the picture. Thank you

maxonik [38]

Answer:

C. $9\pi$

Step-by-step explanation:

We proceed to solve for $x$ by the Pythagorean Theorem:

$(x+1)^{2} = (x-1)^{2} + (2\cdot x - 4)^{2}$ (1)

$x^{2} + 2\cdot x + 1 = (x^{2}-2\cdot x + 1) + (4\cdot x^{2}-16\cdot x + 16)$

$x^{2} + 2\cdot x + 1 = 5\cdot x^{2}-18\cdot x + 17$

$4\cdot x^{2} -20\cdot x + 16 = 0$

$(2\cdot x)^{2} -10\cdot (2\cdot x) + 16 = 0$

$(2\cdot x -8)\cdot (2\cdot x -2) = 0$

There are two different solutions:

$x_{1} = 4$ , $x_{2} = 1$

A solution of $x$ is considered realistic when the length of every side of the triangle is a not negative number.

$x_{1} = 4$

$UV = 2\cdot (4) - 4$

$UV = 4$

$WU = 4 - 1$

$WU = 3$

$WV = 4 + 1$

$WV = 5$

$x_{2} = 1$

$UV = 2\cdot (1) - 4$

$UV = -2$

$WU = 1 - 1$

$WU = 0$

$WV = 1 + 1$

$WV = 2$

The only realistic set of solutions is for $x = 4$ , and the radius of the circle is represented by the line segment $WU$ : $r = 3$

And the area of the circle ( $A$ ) is calculated from the following formula:

$A = \pi\cdot r^{2}$

$A = \pi\cdot (9)$

$A = 9\pi$

The correct answer is C.

6 0

2 years ago

00:00 Sia designs a board game in which a card is drawn on each turn. • A blue card means move forward 4 squares. • A red card m

s344n2d4d5 [400]

Answer:Back 2

Step-by-step explanation:Blue + Red=-2

6 0

3 years ago

Which number sentence is true?<br><br>

skelet666 [1.2K]

Answer:

B) √58 > 6.85

Step-by-step explanation:

7^2 = 49

8^2 = 64

so √58 is between 7 and 8 ---> 7 < √58 < 8

so √58 > 6.85 is true

3 0

2 years ago

Read 2 more answers

How do to improper fraction

BARSIC [14]

Well if you want to turn an improper fraction to a mixed number you just divide the denominator by the numerator if that's what your asking

3 0

3 years ago

Read 2 more answers

The 6th grade student to teacher ratio at cope middle school is 29 to 2. If there are 310 teachers and students in the 6th grade

lana66690 [7]

29/2 = x/310
2x = 8990
There are 4495 students.

5 0

2 years ago

Read 2 more answers