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2 years ago

Why is a cube root of a negative always negative?

1 answer:

5 0

Because if you multiply a negative by a negative, it is positive, right? So, in this instance it is cubed, which means that the number is multiplied by itself 3 times, so the positive is multiplied by the negative, which makes it negative

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Which expression is equal to 5/(sqrt)11?

horrorfan [7]

Answer:

Option A is correct

the expression is equal to $\frac{5}{ \sqrt{11}}$ is $\frac{5\sqrt{11}} {11}$

Explanation:

Given expression is, $\frac{5}{ \sqrt{11}}$

Multiply and divide by the denominator by $\sqrt{11}$ in the given expression, we have,

$\frac{5}{\sqrt{11}} \times \frac{\sqrt{11}} { \sqrt{11}}$

$\frac{5 \cdot \sqrt{11}} {\sqrt{11} \cdot \sqrt{11}}$

use : $\sqrt{a}\cdot\sqrt{a}=(\sqrt{a} )^2 = a$

then;

$\frac{5\sqrt{11}} { (\sqrt{11})^2} =\frac{5\sqrt{11}} {11}$

Therefore, the expression is equal to $\frac{5}{ \sqrt{11}}$ is, $\frac{5\sqrt{11}} {11}$

8 0

3 years ago

Read 2 more answers

Find five solutions for the linear equations 2x + y =5

kondaur [170]

Answer:

Step-by-step explanation:

x = 2, y = 1

x = 1, y = 3

x = 0, y = 5

x = -1, y = 7

x = -2, y = 9

<em>Hope that helps!</em>

<em>-Sabrina</em>

7 0

2 years ago

Mr. Washington is buying a gallon of milk for $3.99 and some boxes of cereal for $4.39 each. If Mr. Washington has

wolverine [178]

Answer:

$20-$3.99(milk)=$17.01÷$4.39(cereal)=4 boxes of cereal

5 0

2 years ago

9y -4y+3 if y =7 solve this

BigorU [14]

Plug 7 into each y. 9(7) -4(7) +3
63-28+3
The answer is 38

5 0

2 years ago

Lorena received a $50 gift card to an online store she wants to purchase some bracelets that cost $8 each there will be a $10 ov

Setler79 [48]

Minus the 10 from the 50, which makes 40. then divide 40 by 8
50-10=40
40÷8=5
n=5

3 0

3 years ago