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lawyer [7]
3 years ago
11

The ages of the students in a dance class are 10, 9, 11, 12, 9, 10, 9, 10, 11, 12, 8, 12, 12.

Mathematics
2 answers:
faust18 [17]3 years ago
8 0

Answer:

Put the numbers in order then find the number that appears the most which is 12.

Step-by-step explanation:

Dominik [7]3 years ago
6 0

Answer:

I don't understand your question but if you wanted to know the mean, median, mode, here it is:

Mean: 10.384615384615

Median: 10

Mode: 12

Range: 4

Minimum:8

Maximum:12

# count:   13

Sum: 135

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Which is the value of this expression when j = negative 2 and k = negative 1?
Natalija [7]

Answer:

Option A.

Step-by-step explanation:

It is given that

j=-2, k=-1

The given expression is

\left(\dfrac{jk^{-2}}{j^{-1}k^{-3}}\right)^3

Substitute the given values in the above expression.

\left(\dfrac{(-2)(-1)^{-2}}{(-2)^{-1}(-1)^{-3}}\right)^3

\Rightarrow \left(\dfrac{(-2)(1)}{\dfrac{1}{-2}(-1)}\right)^3

\Rightarrow \left(\dfrac{-2}{\dfrac{1}{2}}\right)^3

\Rightarrow \left(-4\right)^3

\Rightarrow -64

Therefore, the correct option is A.

3 0
3 years ago
Read 2 more answers
Help please!<br> Fully factorise
poizon [28]

Answer:

a.8y³-6y

taking common

<u>2y(4y²-3)</u>

is a required answer

b.

3x²-20x+12

doing middle term factorization

3x²-18x-2x+12

3x(x-6)-2(x-6)

<u>(x-6)(3x-2)</u>

<u>is</u><u> </u><u>a</u><u> </u><u>required</u><u> </u><u>answer</u><u> </u><u>.</u>

4 0
3 years ago
Read 2 more answers
If a and b are two angles in standard position in Quadrant I, find cos(a+b) for the given function values. sin a=8/17and cos b=1
n200080 [17]

Recall the sum identity for cosine:

cos(a + b) = cos(a) cos(b) - sin(a) sin(b)

so that

cos(a + b) = 12/13 cos(a) - 8/17 sin(b)

Since both a and b terminate in the first quadrant, we know that both cos(a) and sin(b) are positive. Then using the Pythagorean identity,

cos²(a) + sin²(a) = 1   ⇒   cos(a) = √(1 - sin²(a)) = 15/17

cos²(b) + sin²(b) = 1   ⇒   sin(b) = √(1 - cos²(b)) = 5/13

Then

cos(a + b) = 12/13 • 15/17 - 8/17 • 5/13 = 140/221

6 0
2 years ago
How do I find the scale factor
iris [78.8K]
You write it as a ratio eg. SF(large→small)=20:7

4 0
3 years ago
What is the estimate of 172.6 divided by 39 ?
KengaRu [80]
To the nearest tenth = 4.4 and to the nearest whole number is 4. Whatever estimation it asks you.
5 0
3 years ago
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