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Julli [10]
1 year ago
5

Not a Perfect Cube

Mathematics
1 answer:
natulia [17]1 year ago
6 0

The expression equivalent to ∛162 is ∛6 × ∛27

<h3>What is the cube root of a number?</h3>

The cube root of a number is a number a such that when another number, b multiplies itself 3 times, we get a.

So,

  • a = b × b × b = b³and
  • b = ∛a

<h3>What is a perfect cube?</h3>

A perfect cube is a number such that its cube root which is an integer or whole number.

<h3>How to find ∛162.</h3>

Since we have ∛162.

Since 162 is not a perfect cube, to find its cube root, we have

∛162 =  ∛(54 × 3)

= ∛(18 × 3 × 3)

= ∛(2 × 9 × 3 × 3)

= ∛(2 × 3 × 3 × 3 × 3)

= ∛(6 × 27)

= ∛6 × ∛27

So, the expression equivalent to ∛162 is ∛6 × ∛27

Learn more about perfect cube here:

brainly.com/question/12172637

#SPJ1

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the original price is "x", or 100%.

but we know that if we reduce "x" by 20%, namely 100% - 20% = 80%, the 80% of "x" is really £50, what is "x" or the 100% anyway?

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 50&80 \end{array}\implies \cfrac{x}{50}=\cfrac{100}{80}\implies \cfrac{x}{50}=\cfrac{5}{4}\implies 4x=250 \\\\\\ x=\cfrac{250}{4}\implies x=62.5

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2 years ago
In the expression 16x + 2x – 5y + 17, which terms are “like terms”?
Len [333]
The like terms are 16x and 2x
7 0
3 years ago
Read 2 more answers
Pls, help due in 10 mins! Pls, answer both questions!
vredina [299]

Answer:

Answer for first question is 22 yards!

Step-by-step explanation:

I used to do this, you have to multiply. A way of helping, is to split it in half, then add it all together. Now, I am not always accurate but I hope this helps you!

5 0
2 years ago
The age of some lecturers are 42,54,50,54,50,42,46,46,48 and 48 calculate the mean age and standard deviation
rjkz [21]

Answer:

Mean age: 48

Standard deviation: 4

Step-by-step explanation:

a) Mean

The formula for Mean = Sum of terms/ Number of terms

Number of terms

= 42 + 54 + 50 + 54 + 50 + 42 + 46 + 46 + 48+ 48/ 10

= 480/10

= 48

The mean age is 48

b) Standard deviation

The formula for Standard deviation =

√(x - Mean)²/n

Where n = number of terms

Standard deviation =

√[(42 - 48)² + (54 - 48)² + (50 - 48)² +(54 - 48)² + (50 - 48)² +(42 - 48)² + (46 - 48)² + (46 - 48)² + (48 - 48)² + (48 - 48)² / 10]

= √-6² + 6² + 2² + 6² + 2² + -6² + -2² + -2² + 0² + 0²/10

=√36 + 36 + 4 + 36 + 4 + 36 + 4 + 4 + 0 + 0/ 10

=√160/10

= √16

= 4

The standard deviation of the ages is 4

3 0
3 years ago
RDY AND NDA are what?
madam [21]

Answer:

Vertical and Supplementary

Step-by-step explanation:

Vertical:

each of the pairs of opposite angles made by two intersecting lines.

Supplementary:

Two Angles are Supplementary when they add up to 180 degrees. These two angles (140° and 40°) are Supplementary Angles, because they add up to 180°: Notice that together they make a straight angle. But the angles don't have to be together.


8 0
3 years ago
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