All categories

3 years ago

I need help in my homework here it is Solve the equation for x. x3 = 729

Mathematics

2 answers:

ki77a [65]3 years ago

8 0

Firstly the coefficient, or the number next to the variable, which is x, goes before it. So instead of x3, it's 3x.

So, to solve to find what x is, you need to divide by 3 on both sides of the equal sign.

3x=729

Dividing by 3 on the left cancels out the 3, leaving just the x.

Dividing the other side gets you what x equals.

x= 243

Andrej [43]3 years ago

6 0

x3=729

729/3= 243

x=243

You might be interested in

X^2 + 4x + 4 = 0<br>please help!! I missed class! show steps!

Stels [109]

Answer:

x= -2

Step-by-step explanation:

Step 1. In order to find the zeros of the function, we must factor it.

Step 2. To factor this, we have to find two numbers that multiply to 4 and add to 4 which is 2 ( 2*2=4 and 2+2=4)

step 3. 0=(x+2)(x+2)

Step 4 make (x+2) equal to zero and solve which gives us -2, so -2 =x.

7 0

3 years ago

What is the surface area of the cylinder with height 7 cm and radius 5 cm? Round

nalin [4]

Answer:

376.991 cm²

Step-by-step explanation:

$SA_{cylinder} = 2\pi r^{2} + 2\pi rh$

Surface Area = 2π(5²) + 2π(5)(7)

= 50π + 70π

= 120π

= 376.9911184... ≈ 376.991

<h2>Derive Surface Area of A Cylinder</h2>

If you take a look at a net of a cylinder, you can see it is composed of two circles(bases) and a rectangular strip with the length of the diameter of the circle

The formula for the area of a circle = πr², and since there are 2, it is 2πr²

The formula for circumference of a circle = 2πr, and since we are multiplying that by the height by the height of the cylinder, it is 2πrh

∴ 2πr² + 2πrh

5 0

3 years ago

4. Benson sells vacuum cleaners on a commission. He earns $75 for each vacuum cleaner he sells.

Wittaler [7]

He would have to sell at least 19 vacuums.

8 0

3 years ago

Read 2 more answers

William picked 3 3/8

zalisa [80]

What is this asking I have no idea

8 0

4 years ago

How can you find the value of n in this equation?

lesya692 [45]

The answer would be n=37 because…
40+n=77
subtract 40 on both sides, cancelling it out on the left side and 77-40=37 so:
n=37

4 0

3 years ago

Read 2 more answers