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Katena32 [7]
3 years ago
11

How to evaluate and simplify ​

Mathematics
1 answer:
Kobotan [32]3 years ago
6 0

Answer:

depends.

Step-by-step explanation:

Evaluating a question depends on the question given. To simplify an answer, you need to find the simplest answer, this process also depends on what question you're given, for example, if you simplify 4/8 (four eighths), it would be 1/2 (one half).

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Please help fast.
podryga [215]

\huge{\underline{\boxed{\tt{Answer:}}}}

Let AB be a chord of the given circle with centre and radius 13 cm.

Then, OA = 13 cm and ab = 10 cm

From O, draw OL⊥ AB

We know that the perpendicular from the centre of a circle to a chord bisects the chord.

∴ AL = ½AB = (½ × 10)cm = 5 cm

From the right △OLA, we have

OA² = OL² + AL²

==> OL² = OA² – AL²

==> [(13)² – (5)²] cm² = 144cm²

==> OL = √144cm = 12 cm

Hence, the distance of the chord from the centre is 12 cm.

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8 0
3 years ago
Question 3 of 10
Leya [2.2K]

The third quartile of this data set is B. 24.

6 0
3 years ago
Which ordered pair is a solution of the equation y=-2x+5
vovangra [49]

Answer:

A) y=-2x+5 (2,-9) Use substitution method

-9= -2(2)+9

-9= -4+9

-9= 5

B) y=-2x+5 (-2,9)

9= -2(-2)+5

9= 4+5

9= 9

Answer : B) only (-2,9)

8 0
4 years ago
How many songs are played on your favorite radio station in a given year?
dlinn [17]

Answer:

Your favorite radio station in a given year plays 105120 songs.

Step-by-step explanation:

Lets make some assumptions:

1. A radio program in average last 50 minutes, because 10 of them are for commercials.

2. a song average length is about 3 minutes

3. the speakers use 10 to 20 minutes of the radio program.

4. So, in an hour just 30 minutes are effectively used to play songs on a radio station. That results in 10 per hour at least, and 13.3 at most. So lets settle an average of 12 songs per hour.

5. The radio station plays songs 24 hours a day unstoppable.

Now:

A day has 24 hours, a week seven days and therefor (24*7= 168 hours) 168 hours in a week.  

A year has 52.1429 weeks, so it has 8760 Hours (52.17429weeks*168hours=8760 hours )

So:

8760 hours in a year

12 songs per hour

8760*12=105120 songs in a year.

5 0
3 years ago
(3z+1)+5+7z) Step by step explanation needed
Tju [1.3M]

Answer: 10z + 6

Step-by-step explanation:

this is a short problem.. sometimes you would need to distribute, but since there is no number in front of parenthesis you can just get rid of them

that gives you: 3z + 1 +5 + 7z

now from here we combined liked terms

7z + 3z = 10z

1 + 5 = 6

so that gives you: 10z + 6

8 0
3 years ago
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