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vladimir2022 [97]
2 years ago
10

8x^3-6x^2+13x-4 Please simplify this expression and tell me how u simplified it.

Mathematics
1 answer:
jeka942 years ago
5 0
This expression is already simplified. 

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5-7y/2+4y equals -8/7​
Ksenya-84 [330]

Answer:

\boxed{y = 3}

Step-by-step explanation:

=  > \frac{5 - 7y}{2 + 4y}  =  -  \frac{8}{7}  \\  \\  =  > 7(5 - 7y) =  - 8(2 + 4y) \\  \\  =  > (7 \times 5) - (7 \times 7y) = ( - 8 \times 2) + ( - 8 \times 4y) \\  \\  =  > 35 - 49y =  - 16  - 32y \\  \\  =  > 35 - 49y + 32y =  - 16 \\  \\  =  > 35 - 17y =  - 16 \\  \\  =  - 17y =  - 16 - 35 \\  \\  =  >   \cancel{- }17y =  \cancel{- } 51 \\  \\  =  > 17y = 51 \\  \\  =  > y =  \frac{51}{17}  \\  \\  =  > y = 3

4 0
3 years ago
A right triangle has one leg with a length of 48 and a hypotenuse with a length of 80 what is the length of the other leg
Reptile [31]
A^2+b^2= c^2

48^2+b^2= 80^2

2304+b^2= 6400

Subtract 2304 from both sides.

b^2= 4096

Find the square root.

b= 64

I hope this helps!
~kaikers
7 0
3 years ago
the perimeter of a triangle is 29cm. the three sides lengths (all measured in cm) of the triangle are 8, 12 and x. Write and sol
Tasya [4]

Step-by-step explanation:

We have 8 + 12 + x = 29.

Solving, we get x + 20 = 29, x = 9.

3 0
2 years ago
Read 2 more answers
Cot? 2x + cos2x + sin’ 2x = csc? 2x<br> Need help with 40
kkurt [141]

Answer:

\rule{100mm}{0.1mm}

    \cot^2(2x)+\cos^2(2x)+\sin^2(2x)=\csc^2(2x)

\dfrac{\cos^2(2x)}{\sin^2(2x)} +[(\cos^2(2x)+\sin^2(2x)]=\csc^2(2x)

                               \dfrac{\cos^2(2x)}{\sin^2(2x)} +1=\csc^2(2x)

                    \dfrac{\cos^2(2x)+\sin^2(2x)}{\sin^2(2x)}=\csc^2(2x)

                                    \dfrac{1}{sin^2(2x)} =\csc^2(2x)

                                     \boxed{\csc^2(2x)=\csc^2(2x)} ✔

\rule{100mm}{0.1mm}

4 0
3 years ago
HURRY I WILL GIVE BRAINLIEST
bezimeni [28]
36%=36/100=0,36

0,36•47677= 17 163,74

So there's around 17 164 species treatensd with extinction
7 0
3 years ago
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