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2 years ago

Find x, where x^6 = 9^-3 and x > 0

1 answer:

5 0

X^6 = (3^2)^-3
Translated this becomes

x^6 = 3^-6
x^6 = 1/3^6 Now you take the 1/6th root of both sides.
x = +/- 1/3 <<<<
I'm seeing if the equation editor does what it says it will do. You have the information to get the answer.

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Rút gọn : (x+2)^2+(3-x)^2= ?

Yanka [14]

Step-by-step explanation:

=x^2+2x+4+9-6x+x^2

=2x^2-4x+13

6 0

2 years ago

Find the surface area of the composite figure

Gnoma [55]

Answer:

$=280$ $in^2$

Step-by-step explanation:

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Let's find the surface area of the pink rectangular prism first.

$2*10=20+20=40$

$4*10=40+40=80$

$4*2=8+8=16$

$40+80+16=136$

The surface area for the pink rectangular prism is $136$ $in^2$ .

-------------------->>>>>

Now, let's find the surface area of the green rectangular prism.

$4*7=28+28=56$

$4*4=16+16=32$

$56+56+32=144$

The surface area for the green rectangular prism is 144 $in^2$ .

-------------------->>>>>

Now let's add the surface area of both rectangular prisms to find the surface area of the composite figure.

$136+144=$

$=280$ $in^2$

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Hope this is helpful.

6 0

2 years ago

Read 2 more answers

1) Solve the following system of equations algebraically. Give your solution as two

Bad White [126]

For this case we have the following system of equations:

$y = x ^ 2 + 7x + 12\\y = 2x + 8$

Equating both equations we have:

$x ^ 2 + 7x + 12 = 2x + 8\\x ^ 2 + 7x-2x + 12-8 = 0\\x ^ 2 + 5x + 4 = 0$

We must find the solutions, for this we factor. We look for two numbers that, when multiplied, result in 4 and when added, result in 5. These numbers are 4 and 1:

$4 + 1 = 5\\4 * 1 = 4$