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4 years ago

Please help! if anybody is good at equivalent polynomial expressions please help!!

Mathematics

1 answer:

butalik [34]4 years ago

8 0

The answer you have highlighted is correct. Here is why

$( \frac{ b^{2}-10 }{b^{2}-9})( \frac{b - 3}{b + 10})$
$\frac{(b+10)(b-10)}{(b+3)(b-3)}( \frac{b-3}{b+10})$ - Factor the top
$\frac{b-10}{b+3}$ - the (b-3)'s and (b+10)'s cancel out since on top and bottom.

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pls help for 15 points asap Phil traveled with his family by car. They started their trip from Lexington to Louisville, driving

victus00 [196]

Given that Phil traveled with his family by car. They started their trip from Lexington to Louisville, driving directly west for 60 miles.

So AB=60

They then turned North, driving to Indianapolis which is 100 miles from Lexington.

So AC=100

Then, they turned to the West again, and drove to Decatur which which is 170 straight miles from Louisville.

so BD=170

Now we have to find about how many miles did they cover in total driving from Lexington to Decatur.

That means we have to find length of (AB+BC+CD)

We can use Pythogorean theorem to find the values of BC and CD.

$BC=\sqrt{AC^2-AB^2}=\sqrt{100^2-60^2}=\sqrt{10000-3600}=\sqrt{6400}=80$

$CD=\sqrt{BD^2-BC^2}=\sqrt{170^2-80^2}=\sqrt{28900-6400}=\sqrt{22500}=150$

then (AB+BC+CD)=60+80+150= 290

Hence final answer is miles.

3 0

3 years ago

Free points bc I don't know how to use these things.

34kurt

Answer:

thank you hahahahahahaha <3

3 0

3 years ago

Read 2 more answers

X-1/x-2+x+3/x-4=2/(x-2).(4-x)

Varvara68 [4.7K]

The given equation x-1/x-2+x+3/x-4=2/(x-2).(4-x) is correct. the answer is proved.

According to the statement

we have given that the equation and we have to prove that the given answer is a correct answer for those equivalent equation.

So, The given expression are:

$\frac{x-1}{x-2} +\frac{x+3}{x-4} = \frac{2}{(x-2).(4-x)}$

And we have to prove the answer.

So, For this

$\frac{x-1}{x-2} +\frac{x+3}{x-4}$

$\frac{({x-1}) ({x-4}) +({x+3})({x-2})} {(x-2) (x-4)}$

Then the equation become

$\frac{x^{2} -4x -x +4 + x^{2} -2x + 3x -6 }{(x-2) (x-4)}$

Now solve it then

$2x^{2} - 4x -2 / (x-2) (x-4)$

Now take 2 common from answer then equation become

$\frac{x-1}{x-2} +\frac{x+3}{x-4} = \frac{2}{(x-2).(4-x)}$

Hence proved.

So, The given equation x-1/x-2+x+3/x-4=2/(x-2).(4-x) is correct. the answer is proved.

Learn more about equations here

brainly.com/question/2972832

#SPJ1

3 0

1 year ago

If Tan A = 1/4 and Tan B = find 1/5

Doss [256]

Recall that

cos(A + B) = cos(A) cos(B) - sin(A) sin(B)

sin(A + B) = sin(A) cos(B) + cos(A) sin(B)

By definition of cotangent,

cot(A + B) = 1 / tan(A + B) = cos(A + B) / sin(A + B)

and by applying the identities above,

cot(A + B) = (cos(A) cos(B) - sin(A) sin(B)) / (sin(A) cos(B) + cos(A) sin(B))

Now, multiply the expression on the right by 1/(sin(A) sin(B)) to get

cot(A + B) = (cot(A) cot(B) - 1) / (cot(B) + cot(A))

Given tan(A) = 1/4 and tan(B) = 1/5, we have cot(A) = 4 and cot(B) = 5, so that

cot(A + B) = (4×5 - 1) / (5 + 4) = 19/9

8 0

3 years ago

Find the area of the figure

rjkz [21]

Answer:

100 mm

Step-by-step explanation:

this right awnser

6 0

2 years ago

Read 2 more answers