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3 years ago

Solve x^3=27?

2 answers:

4 0

Your answer is A. x = 3.

This is because to solve x³ = 27, we need to cube root both sides of the equation, and the cube root of 27 is 3.

It cannot be -3, as -3 × -3 × -3 = 9 × -3 = -27.

I hope this helps!

melamori03 [73]3 years ago

3 0

Answer:

the correct answer is A, x = 3

Step-by-step explanation:

You might be interested in

One less than twice a number x is more than 5.

Tasya [4]

Answer:

x > 3

Step-by-step explanation:

You want an inequality

2x-1 >5

2x>6 divide by 2

x>3

5 0

3 years ago

Read 2 more answers

Complete the equations with powers of 101010. 720{,}800 \div {}720,800÷720, comma, 800, divided by =7.208=7.208equals, 7, point,

jarptica [38.1K]

Answer:

Step-by-step explanation:

Given the expression $\frac{720,800}{x} = 7.208$ , we are to find the value of with powers of 10.

From the equation:

$\frac{720,800}{x} = 7.208$

cross multiply

$720,800 = 7.208x\\7.208x = 720,800$

divide both sides by 7.208

$\frac{7.208x}{7.208} = \frac{720,800}{7.208} \\x = 100,000$

express x in powers of 10

$x = 10 * 10 * 10 * 10* 10\\x = 10^5$

Similarly given the equation $\frac{720,800}{y} = 72.08$

From the equation:

$\frac{720,800}{x} = 72.08$

cross multiply

$720,800 = 72.08x\\72.08x = 720,800$

divide both sides by 7.208

$\frac{72.08x}{72.08} = \frac{720,800}{72.08} \\x = 10,000$

express x in powers of 10

$x = 10 * 10 * 10 * 10\\x = 10^4$

For the equation $\frac{720,800}{z} = 720.8$

From the equation:

$\frac{720,800}{z} = 720.8$

cross multiply

$720,800 = 720.8z\\720.8z = 720,800$

divide both sides by 7.208

$\frac{72.08z}{720.8} = \frac{720,800}{720.8} \\z = 1,000$

express x in powers of 10

$z = 10 * 10 * 10\\z = 10^3$

8 0

3 years ago

(05.06)A chocolate bar measures 40 mm wide, 80 mm long, and 5 and 1 over 2 mm high. Will’s Wrapping Company is making a wrapper

photoshop1234 [79]

Answer:

Will’s Wrapping Company needs 7,720 mm2 of paper to wrap the chocolate bar.

Step-by-step explanation:

we know that

The amount of paper needed to make the wrapper is equal to the surface area of the chocolate bar

The surface area of a rectangular prism (chocolate bar) is equal to

$SA=2B+PH$

where

B is the area of the base

P is the perimeter of the base

H is the height of he prism

In this problem we have

$L=80\ mm\\W=5\frac{1}{2}\ mm=5.5\ mm\\H=40\ mm$

Find the area of the base

$B=LW=(80)(5.5)=440\ mm^2$

Find the perimeter of the base

$P=2(L+W)=2(80+5.5)=171\ mm$

Find the surface area

$SA=2(440)+171(40)\\SA=7,720\ mm^2$

5 0

2 years ago

For what value(s) of k will the relation not be a function?

kolbaska11 [484]

Answer:

See below

Step-by-step explanation:

The relation is not a function when x -value is same but y- values are different.

k^2 = 4k
k = 0, k = 4

k^2 - 5k = k + 7
k^2 - 6k = 7
k^2 - 6k + 9 = 16
k - 3 = 4 ⇒ k = 7
k - 3 = -4 ⇒ k = -1

k^3 - 5k^2 + 3k = -k
k^3 - 5k^2 + 4k = 0
k(k^2 - 5k + 4) = 0
k = 0, k = 1, k = 4

|k + 1| + 2 = 8
|k + 1| = 6
k = 5, k = -7

8 0

3 years ago

The hour hand of a clock moves -30° every hour. How many degrees does it move in 2 1/5 hours?

Andrej [43]

It moves 2.00666666667 every 1 1/5 hours

5 0

3 years ago