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wariber [46]
3 years ago
14

a chord is drawn 5cm away from the centre of a circle of radius 13cm. calculate the length of the chord​

Mathematics
2 answers:
Vladimir79 [104]3 years ago
7 0

Answer:

24cm

Step-by-step explanation:

x^2+5^2=13^2=. x^2+25=169 x^2=144 2x×2×12 =24

Novosadov [1.4K]3 years ago
4 0

Answer:

24 cm

Step-by-step explanation:

x^2+5^2=13^2

x^2+25=169

x^2=144

x=sqrt(144)=12

2x×2×12= 24 cm

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What does 3x+8+9x^2 equal?
densk [106]

Answer:

Stays the same. OR Standard form: 9x^2+3x+8

Step-by-step explanation:

You can't factor it. When you add them it's the same bc, you can't combine anymore like terms. let me know if this helps at all? What is your objective? Tryna factor? Add polynomials? ???

6 0
4 years ago
HELP PLEASE EXPERTS! the question is in the picture
ahrayia [7]

Answer:

B) 6

Step-by-step explanation:÷

The area of a triangle = 1/2 b* h or \frac{b*h}{2}

Line AB = 4

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5 0
3 years ago
Read 2 more answers
Write the equation of a sine function that has the following characteristics.
slava [35]

Answer:

\displaystyle y = 7\sin(9\pi(x +   {1}/{4}) )

Step-by-step explanation:

we are given

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  • Period:9π
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remember that,

\displaystyle y = A \sin(B(x + C) )+ D

where A is the Amplitude

B is the Period

C is the Phase shift

D is the vertical shift

note that, since D isn't given we'll take it 0

altogether substitute:

\displaystyle y = 7\sin(9\pi(x +   {}^{1}/_{4}) )+ 0

hence,

our equation is

\displaystyle y = 7\sin(9\pi(x +   {}^{1}/_{4}) )

and we are done!

5 0
3 years ago
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There are different types of correlation one can use based on the types of variables being examined. When conducting an analysis
JulijaS [17]

The correct option is A.

When the data are nominal or ordinal.

<h3>What are the Types of  correlation?</h3>

There are three types of correlation:

1. Positive and negative correlation

2. Linear and non-linear correlation

3. Simple, multiple, and partial correlation

<h3>According to the information:</h3>

There are different types of correlation one can use based on the types of variables being examined.

Spearman’s rho is a superb choice when you have nominal or ordinal data because Pearson’s isn't appropriate. Ordinal data have a minimum of three categories and the categories have a natural order. for instance , first, second, and third during a race are ordinal data.

<h3>Briefing:</h3>

Two variables can have some quite relationship, i.e., change in one may cause a change within the other.

If a change within the value of one variable causes a simultaneous change in the other variable in the same or opposite direction, then it’s termed as correlation, or these variables are said to be correlated. Keeping these in mind the answer to this question is When the data are nominal or ordinal

When the data are nominal or ordinal.

So the option no A is correct.

To know  more about correlation visit:

brainly.com/question/28165535

#SPJ4

I understand that the question you are looking for is:

There are different types of correlation one can use based on the types of variables being examined. When conducting an analysis, when do you need to use spearman’s rho instead of Pearson's r ?

A. When the data are nominal or ordinal.

B. When the data are ratio or interval.

C. When the data are random.

D. Spearman's rho should never be used for correlations.

7 0
1 year ago
Solve the equation x = square root of 27
suter [353]

Answer: 5.19615242271 to be exact

Step-by-step explanation: its honestly pretty ez

5 0
3 years ago
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