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r-ruslan [8.4K]

2 years ago

7

Explain what the index on a radical does

1 answer:

Lena [83]2 years ago

7 0

The quantity n written to the left is called the index.

Radicals - The symbol n√x. used to indicate a root is called a radical and is therefore read "x radical n," or "the nth root of x." In the radical symbol, the horizontal line is called the vinculum, the quantity under the vinculum is called the radicand, and the quantity n written to the left is called the index.

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Round each number to the nearest ten<br> 24= 311= 107=

Dmitriy789 [7]

Answer:

24=20, 311=310, 107=110

4 0

3 years ago

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One number is 6 more than another. The difference between their squares is 204. What are the numbers?

Crazy boy [7]

Answer:

14 and 20

Step-by-step explanation:

<u><em> Let x and y be two numbers where x < y</em></u><em>.</em>

We are given :

y - x = 6

y² - x² = 204

Then

y - x = 6

(y - x)(y + x) = 204

Then

y - x = 6

6 × (y + x) = 204

then

y - x = 6 (Equation 1)

y + x = 34 (Equation 2)

Then

(Equation 1) + (Equation 2) ⇒ 2y = 40 ⇒ y = 20

Now ,we substitute y by 20 in equation 1 :

y - x = 6

⇔ 20 - x = 6

⇔ 20 - 6 = x

⇔ x = 14

4 0

1 year ago

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Two numbers are in a ratio 11:7. If the smaller number is 700, what is the larger number? Pls tell with steps

Nutka1998 [239]

Answer:

The larger number is $1100$

Step-by-step explanation:

Let larger number be $x$

We have

$\frac{x}{700} =\frac{11}{7} \\\\x=100\times11\\\\=1100$

6 0

2 years ago

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Solve each equation 3x^2=80

Lapatulllka [165]

Answer:

$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

or

$x = \frac{\pm4\sqrt{15}}{3}$

Step-by-step explanation:

Hello!

Use the quadratic formula: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

First, let's convert our equation to standard form of a Quadratic: ax² + bx + c = 0

3x² = 80

3x² - 80 = 0

Note, thats the value of b will be 0, as there is no "bx"

Now, solve:

$x = \frac{-(0) \pm \sqrt{(0)^2 - 4(3)(-80)}}{2(3)}$ Plug in values
$x = \frac{\pm\sqrt{960}}{6}$ Simplify the radical (Discriminant)
$x = \frac{\pm8\sqrt{15}}{6}$ Pull out perfect squares
$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$ Reduce factors

The solutions are $x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

5 0

3 years ago

6 + 6y = 30<br> Submit Answer<br> What is y

Lapatulllka [165]

Answer:

5

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers