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posledela
4 years ago
14

" class="latex-formula">
what is the answer to this. can someone please help me?
Mathematics
1 answer:
Lorico [155]4 years ago
7 0

sqrt (21) = sqrt(3)*sqrt(7)

is an irrational number

it cannot be simplified

it can be approximated

sqrt (21) is approximately 4.582575695.......

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Which do you think is easier to understand and why do you think so, multiplying radicals or multiplying polynomials?
Vera_Pavlovna [14]

I believe that its easier to understand the multiplication of a radical than that of a polynomial.

<h3>How to illustrate the information?</h3>

In mathematics, a radical is the opposite of an exponent that is represented with a symbol '√' also known as root.

A polynomial is an expression which is composed of variables, constants and exponents, that are combined using the mathematical operations such as addition, subtraction, multiplication and division.

When multiplying radicals with the same index, multiply under the radical, and then multiply in front of the radical. An example is:

= 3✓2 × 4✓2

= 12✓4

= 12 × 2

= 24

The multiplication of a radical is easier.

Learn more about polynomial on:

brainly.com/question/2833285

#SPJ1

3 0
2 years ago
on a piece of paper graph the system of equations then determine which answer choice matches the graph you drew and identify the
grigory [225]

Answer:

the solution is (-2,3)

Step-by-step explanation:

a

7 0
3 years ago
PLEASE HELP
Vlad [161]
Do you need the answer now ?
3 0
3 years ago
Jim ran 12 1/2 miles in 2 1/2 hours. How many hours for 1 mile?
Klio2033 [76]

Answer:

1/5 hours i.e 0.2 hours (which is 12 mins)

Step-by-step explanation:

First note that 12 1/2 = 12.5, and 2 1/2 = 2.5.

To work out how many hours it takes hime to drive one mile, we divide the number of hours (2.5) by the number of miles (12.5),

i.e 2.5 ÷ 12.5

which equals 1/5 = 0.2 hours (= 12 mins).

4 0
3 years ago
Melissa got 18 out of 20 on a math quiz. Tom got 85% on the quiz. Whose mark was greater? (Show all of your proof
Korvikt [17]

Answer:

Melissa

Step-by-step explanation:

Melissa: 18/20

Tom: 85/100

Find the common denomenater so multiply 18*5 and 20*5

Melissa: 95/100

95>85

Melissa has the greater mark

4 0
3 years ago
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