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2 years ago

PLS HELP I NEED IT ASAP

Mathematics

1 answer:

Marina CMI [18]2 years ago

8 0

Answer:

2.50

Step-by-step explanation:

that is just barely less then a 90° so I rounded it up to a 90° and the closest answer is 2.50

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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

Write and solve equation.<br> What is 16% of 80?

PolarNik [594]

Question: What is 16% of 80?

You have to change the percentage to a decimal.

Remove the percentage sign and divide by 100 (% are based off 100)

16%⇒.16

Now multiply .16 and 80

$.16 * 80=12.8$

Answer: 12.8

5 0

3 years ago

HELP PLEAE GIVING BRAINLIEST! MEAN A LOT IF YOU HELP! :)<br> HELP SOLVE

Bumek [7]

Answer:

160

Step-by-step explanation:

Muliply both sides by 20/3 to get e=20/3*24=160

5 0

2 years ago

Read 2 more answers

Help pleaseee? i will give you brainliest answer

Leokris [45]

All i know is that both of them are parallel

i think for the first one its 6

hope this helps

7 0

3 years ago

If-1 is a root of f), which of the following must be true?

ANEK [815]

Answer:

A factor of f(x) is (x + 1).

Step-by-step explanation:

When we put x+1= 0 then we get the value x= -1

This value is then put into the function to find out whether it is a root or not. For a root to exist it must not have a remainder or the remainder must be zero.

Suppose the function is

F(x)= 2x³ - 42x - 40

f(-1)= 2(-1)³ - 42(-1) - 40

f(-1)= -2 + 42- 40

f(-1)= 0

This gives -1 as the root of the function.

6 0

2 years ago