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Stels [109]
3 years ago
13

If x3 = 27, what is the value of x?

Mathematics
1 answer:
ipn [44]3 years ago
8 0

Answer:

The value of x is 3

Step-by-step explanation:

Given:

x^3 = 27

To Find:

x = ?

Solution:

We Know that

a = (a^3)^\frac{1}{3}

a = (a)^\frac{3}{3}

We can write 27 as 3 \times 3 \times 3 = 3^3

Taking cube root on both sides

(x^3)^{\frac{1}{3} }= (3^3)^{\frac{1}{3}}

x^{\frac{3}{3}} = 3^{\frac{3}{3}}

x^1 = 3^1

x = 3

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Ellis is painting wooden fenceposts before putting them in his yard. They are each 5 feet tall and have a diameter of 1 foot. Th
Naya [18.7K]

Answer:

39.25 cubic feet of paint will be needed by Ellis.

Step-by-step explanation:

Volume of a cylinder:

The volume of a cylinder of radius r and height h is given by:

V = \pi r^2h = 3.14r^2h

How much paint will Ellis need to paint all the surfaces of the 10 fenceposts?

This is the combined volume of these 10 fenceposts.

They are each 5 feet tall and have a diameter of 1 foot.

Radius is half the diameter, so r = \frac{1}{2} = 0.5. Also h = 5

10 fenceposts:

Each has the same volume, so:

V = 10(3.14)r^2h = 31.4(0.5)^2(5) = 39.25

39.25 cubic feet of paint will be needed by Ellis.

6 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
kati45 [8]

Answer:

42.39 cubic feet

Step-by-step explanation:

7 0
3 years ago
Place the correct tiles in the appropriate order to solve the system of equations using the method of substitution:
BabaBlast [244]

Answer:

Okay Buddy again sigh*

  • Solve 1 equation for 1 variable. ( Put in y = or x = form)
  • Substitute this expression into the other equation and solve for the missing variable.
  • Substitute your answer into the first equation and solve.
  • Check the solution.

Okay Hope it helps Buddy!

7 0
3 years ago
Sub to pewdiepie. Help make him number one again. ​
Vladimir [108]

Answer:

make me brainliest i have been subbed for a couple yrs not joking

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Michael is trying to write the algebraic expression for the following word phrase: the quotient of 6 and the sum of 5 and y? Mic
gizmo_the_mogwai [7]

Answer:

Error: He multiplied 6 by 5 + y instead of divided 6 by 5 + y

Correct solution: 6 ÷ (5 + y)

Step-by-step explanation:

- <em>Lets revise some words of some operations in mathematics</em>

# The sum ⇒ (+) Add

# The difference ⇒ (-) subtract

# The product ⇒ (×) multiply

# The quotient (answer of division) ⇒ (÷) divide

* <em>Lets solve the problem</em>

- Michael is trying to write the algebraic expression for the following

 word phrase:

 the quotient of 6 and the sum of 5 and y

- <u><em>Lets explain that:</em></u> the quotient means the answer of division so he

 wants to divide a quantity by another one

∵ The first quantity is 6

∵ The second quantity is the sum of 5 and y

- He wants to divide 6 by (5 + y)

∴ The expression is 6 ÷ (5 + y)

* Error: He multiplied 6 by 5 + y instead of divided 6 by 5 + y

* Correct solution: 6 ÷ (5 + y)

4 0
4 years ago
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