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2 years ago

11

Help me divide this radical

1 answer:

melisa1 [442]2 years ago

5 0

The 4's will cancel out, then we have to get rid of the sqrt(16) on the bottom

sqrt(15) / sqrt(16)

sqrt(16) = 4

final answer = sqrt(15) / 4.

the answer is C

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tia_tia [17]

Answer:

$8-6i$

Step-by-step explanation:

Multiply out $(3-i)^2$ in order to find out which expression it is equivalent to.

1) Since the whole quantity is squared, write it out as $(3-i)(3-i)$ .

$(3-i)^2\\(3-i)(3-i)$

2) Multiply binomials by using the FOIL method. Multiply the terms that are listed first in each binomial, then the ones that are listed outermost when looking at both binomials, then innermost, and finally the last terms listed in each binomial. Simplify and combine like terms.

$(3-i)(3-i)\\9 - 3i - 3i + i^2$

$9 - 6i + i^2$

3) $i = \sqrt{-1}$ , so $i ^2$ must be $(\sqrt{-1} )(\sqrt{-1})$ . Thus, $i^2$ is equivalent to -1. Knowing this, simplify and combine like terms.

$9 - 6i + ((-\sqrt{1} )(\sqrt{-1} ))$

$9 - 6i -1\\8 - 6i$

Thus, it is equivalent to $8 - 6i$ .

6 0

3 years ago

A store that buys and sells used video games buys a game at a cost of $19 and sells it at a selling price of $22. Find the mar

bija089 [108]

3 is the correct answer

8 0

2 years ago

Please help don’t get it ASAP

maxonik [38]

Answer:

Option C is correct.

$38 miles$

Step-by-step explanation:

Let x be the distance cover by Michelle

Given:

A circle diameter is 3 miles.

And Michelle biked around the trail 4 times.

We know that

The circumference of a circle.

circumference = $2\pi r$ ----------(1)

where $r=\frac{Diameter}{2}$

$r=\frac{3}{2} \\r=1.5$ miles

Put $\pi =3.14$ and r value in equation 1.

$circumference = 2\times 3.14 1.5$

$circumference = 9.42 mil;es$

The circumference of a circle is 9.42 miles.

And Michelle biked 4 times, that is equal to 4 $\times$ circumference.

$x = 4\times 9.42$

$x = 37.65 miles$ .

That is equal to 38 miles.

Therefore, Michelle biked around 4 trail is 38 miles.

5 0

2 years ago

The Greenville city soccer league has 1,230 players. Spruceburgh's league has 3 times as many players as the Greenville league.

Nimfa-mama [501]

Answer:

technically you multiply 3690 pick c

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Help please...........bad

djverab [1.8K]

Answer: 0,5, and -4 is the zeros

Step-by-step explanation:

3 0

2 years ago