3 years ago

I really need help anyone please

Mathematics

1 answer:

icang [17]3 years ago

4 0

(15x^3y^-8)÷(5x^2y^-4)
= 3xy^-4

(3x)/ y^4

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X − y = 12<br> x + 2y = 21

olga55 [171]

Answer: x=15, y=3

Step-by-step explanation:

Subtracting the two equations, we get -3y=-9, meaning y=3.

Substituting this into the first equation, we get that x-3=12, and thus, x=15.

5 0

2 years ago

I NEED HELP WITH THIS ASAP!! Please!

ipn [44]

Answer:

f(x)=3x+2,g(x)=2x^(2)-1

Step-by-step explanation:

First set up the composite result :

f (g (x))

Evaluate f (g (x))

3( 2x sqaured -1 ) + 2

Simplify:

f ( 2X SQUARED -1 ) 6 x squared -3 + 2

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8 0

3 years ago

Write the following numbers used in these statements in scientific notation. (Note: Some of these numbers have been rounded.)

lutik1710 [3]

Answer:

So in scientific form 4000 miles will be equal to $4\times 10^3miles$

Step-by-step explanation:

We have given that radius of earth is 4000 miles

4000 miles can be written as 4×1000

We have to written 4000 miles in scientific form

We know that 1000 can be written in scientific form as $1000=10^3$

So $4000miles =4\times 1000=4\times 10^3miles$

So in scientific form 4000 miles will be equal to $4\times 10^3miles$

5 0

3 years ago

Order the following from greatest to least: <br>20, −22, |−45|, |−49|.

Leona [35]

20, -22, -45, and -49

it's easy

7 0

1 year ago

Please answer I need it fast thx ¡,,

Alla [95]

Answer:

whats your question? I can't see what you need

7 0

3 years ago