3 years ago

Radical expressions Help pls multiple choice

Mathematics

1 answer:

Ann [662]3 years ago

8 0

Answer:

4th option (sqrt(10))/2

Step-by-step explanation:

$\frac{5}{\sqrt{10} } * \frac{\sqrt{10}}{\sqrt{10} } \\ \frac{5\sqrt{10}}{10} \\\\frac{\sqrt{10}}{2}$

You might be interested in

If log2 5 = k, determine an expression for log32 5 in terms of k.

lukranit [14]

Answer:

$log_3_2(5)=\frac{1}{5} k$

Step-by-step explanation:

Let's start by using change of base property:

$log_b(x)=\frac{log_a(x)}{log_a(b)}$

So, for $log_2(5)$

$log_2(5)=k=\frac{log(5)}{log(2)}\hspace{10}(1)$

Now, using change of base for $log_3_2(5)$

$log_3_2(5)=\frac{log(5)}{log(32)}$

You can express $32$ as:

$2^5$

Using reduction of power property:

$log_z(x^y)=ylog_z(x)$

$log(32)=log(2^5)=5log(2)$

Therefore:

$log_3_2(5)=\frac{log(5)}{5*log(2)}=\frac{1}{5} \frac{log(5)}{log(2)}\hspace{10}(2)$

As you can see the only difference between (1) and (2) is the coefficient $\frac{1}{5}$ :

So:

$\frac{log(5)}{log(2)} =k\\$

$log_3_2(5)=\frac{1}{5} \frac{log(5)}{log(2)} =\frac{1}{5} k$

6 0

2 years ago

HELP ASAP WILL GIVE BRAINLIEST!!!!!!!!!!!!! AND 50 POINTS

Alex_Xolod [135]

Your answer is c, hope this helps, ask me any questions if needed+

6 0

2 years ago

Read 2 more answers

What forms of the following equation in?<br><br> y+5=7(x−3)

skelet666 [1.2K]

I think it would be -26

3 0

2 years ago

Read 2 more answers

I- Please someone help me -_- I hate math so much

zzz [600]

Answer:

5 & 13

Step-by-step explanation:

a. -9 + 4 = -5

Absolute Value = 5

b. Absolute value of -9 is 9

9 + 4 = 13

<em>hope this helps :)</em>

6 0

2 years ago

Read 2 more answers

A sequence defined by f (1) = 3 and f (n) = 2 - f (n - 1) for n ≥ 2. Which of the following

Greeley [361]

Answer:

None of these

Step-by-step explanation:

See attached image

7 0

2 years ago

Read 2 more answers