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Phantasy [73]
3 years ago
11

Someone please answer.

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0

Answer:

I don't no sorry for that

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Show that log√7 + log√20 - log√14 = 1/2
Mademuasel [1]

Alright, lets get started.

log \sqrt{7}  + log \sqrt{20}  - log\sqrt{14} = \frac{1}{2}

We could write this square root as \frac{1}{2}

log7^{\frac{1}{2}} + log20^{\frac{1}{2}}- log14^{\frac{1}{2}}

Using the property of logm^{n } = n log (m)

\frac{1}{2}log 7 + \frac{1}{2} log 20 - \frac{1}{2} log14

\frac{1}{2} is common in each term, so

\frac{1}{2}(log7 + log 20 - log 14)

Using property of log m  + log n = log(mn)

\frac{1}{2}(log 140 - log 14)

Using property of log m - log n = log\frac{m}{n}

\frac{1}{2}log\frac{140}{14}

\frac{1}{2} log 10

log 10 value is 1 , hence

\frac{1}{2} * 1 = \frac{1}{2} : Answer

Hope it will help :)

6 0
3 years ago
| 1). What number is 40% of 50?
ipn [44]
40% of the number 50 is 20
7 0
3 years ago
If triangle ABC is an equilateral triangle and BD = 36 inches, find the value of x
kodGreya [7K]

Answer:

The value of x is 24\sqrt{3}\ in

Step-by-step explanation:

we know that

An equilateral triangle has three equal sides and three equal internal angles (each internal angle measure 60 degrees)

In this problem

see the attached figure to better understand the problem

In the right triangle ABD

sin(60\°)=BD/AB

Solve for AB

AB=BD/sin(60\°)

we have

BD=36\ in

sin(60\°)=\frac{\sqrt{3}}{2}

substitute

AB=36/(\frac{\sqrt{3}}{2})=24\sqrt{3}\ in

3 0
4 years ago
How do you answer the equation -4r+11=4(1-r)+7?
kow [346]

Answer:

Any value of  

r

makes the equation true.

All real numbers

Interval Notation:

(-Any value of  

r

makes the equation true.

All real numbers

Interval Notation:

( ∞ ,∞ )

Step-by-step explanation:

3 0
3 years ago
Match each inequality with the correct solution.
Temka [501]

Answer: the first question is x < -2

the second one is x < 2

the third one is x > -2

the last one is x > 2

Step-by-step explanation:

8 0
4 years ago
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