All categories

3 years ago

They ratio of pencils to erasers is 4:1 if their are 20 pencils how many erasers are there

Mathematics

1 answer:

velikii [3]3 years ago

8 0

Let x be the number of erasers
4 = 20
1 = x

4x = 20

x = 5
therefore there are 5 number of erasers

You might be interested in

kirk has 42 pieces of candy to divide evenly between his three children. if he puts the pieces into three boxes how many pieces

Gekata [30.6K]

14 pieces of candy in the box

8 0

2 years ago

BRIANLIST ANSWER pls help i meant to put science

melisa1 [442]

Answer:

I'd say Yev's description is best because it's the most specific to what it actually is in terms of science, while everyone else's descriptions are more like examples of different types and stages of energy, and where it could be found.

Hope this makes sense to ya :)

4 0

3 years ago

Create at least three equations where the quadratic has a vertex of (-3,-4). Explain how you would do that, please.

Helen [10]

$vertex = \binom{ - \frac{b}{2a} }{ \frac{4ac - {b}^{2} }{4a} }$

5 0

2 years ago

A card is picked up at random from a pack of 52 cards. Find the probability that it is a king or queen.

zalisa [80]

Total number of cards = 52
Total number of kings or queens = 8

P(King or Queen) = 8/52 = 2/13

------------------------------------------------------------
Answer: The probability is 2/13.
------------------------------------------------------------

3 0

3 years ago

Simplify the square root of 3 times the fifth root of 3.

bogdanovich [222]

Answer:

<h2><em>Three to the three fifths power.</em></h2>

Step-by-step explanation:

The given expression is

$\sqrt{3\sqrt[5]{3} }$

To simplify this expression, we have to use a specific power property which allow us to transform a root into a power with a fractional exponent, the property states:

$\sqrt[n]{x^{m}}=x^{\frac{m}{n}}$

Applying the property, we have:

$\sqrt{3\sqrt[5]{3}}=\sqrt{3(3)^{\frac{1}{5}}}=(3(3)^{\frac{1}{5}})^{\frac{1}{2}}$

Now, we multiply exponents:

$(3(3)^{\frac{1}{5}})^{\frac{1}{2}}\\3^{\frac{1}{2}}3^{\frac{1}{10}}$

Then, we sum exponents to get the simplest form:

$3^{\frac{1}{2}}3^{\frac{1}{10}}=3^{\frac{1}{2}+\frac{1}{10}} =3^{\frac{10+2}{20}}=3^{\frac{12}{20}} \\\therefore \sqrt{3\sqrt[5]{3}}=3^{\frac{3}{5} }$

Therefore, the right answer is <em>three to the three fifths power.</em>

3 0

3 years ago

Read 2 more answers