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shutvik [7]
2 years ago
5

In the data set below what is the mean absolute deviation 41,56,38,45,55,51,52

Mathematics
1 answer:
saveliy_v [14]2 years ago
8 0
All of these numbers are making me crazy
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Please help asap 35 pts
Vera_Pavlovna [14]

I’m pretty sure the answer is B. Add 15 to 73. Divide 88 by 8 to get 11. A>11

8 0
2 years ago
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The law of cosines is a^2+b^2-2abcosC=c^2. Find the value of 2abcosC.
polet [3.4K]
2ab x cos (C) = 7 because

a^2 + b^2 - 2ab x cos(C) = c^2
2ab x cos(C) = a^2 + b^2 - c^2
2ab x cos(C) = 2^2 + 2^2 - 1^2
2ab x cos (C) = 7
4 0
2 years ago
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Q is in the interior of angle ROS S in the interior of angle QOP. P is in the interior of angle SOR. S is in the interior of ang
MrMuchimi

∠ROT=160°

∠SOT=100°

Now ∠SOR= ∠ROT - ∠SOT

∠ SOR = 160°-100°

∠ SOR =60°

It is given that measure of angle ROQ to equals the measure of angle QOS equals the measure of angle POT.

∠SOQ + ∠QOR = 60°

But ∠SOQ = ∠QOR

2∠SOQ=60°

∠SOQ=60°÷2

∠SOQ =30°

Also ∠POT=∠SOQ=∠ROQ=30°


3 0
2 years ago
Which represents a quadratic function? f(x) = −8x3 − 16x2 − 4x f (x) = three-quarters x 2 + 2x − 5 f(x) = StartFraction 4 Over x
tatyana61 [14]

Answer:

2.\ f(x) = \frac{3}{4}x^2 + 2x - 5

Step-by-step explanation:

Given

f(x) = -8x^3 - 16x^2 - 4x\\f(x) = \frac{3}{4}x^2 + 2x - 5\\f(x) = \frac{4}{x^2} - \frac{2}{x} + 1\\f(x) = 0x^2 - 9x + 7

Required

Which of the above is a quadratic function

A quadratic function has the following form;

ax^2 +bx + c = 0 \ where \ a\neq 0

So, to get a quadratic function from the list of given options, we simply perform a comparative test of each function with the form of a quadratic function

1.\ f(x) = -8x^3 - 16x^2 - 4x

This is not a quadratic function because it follows the form f(x) = ax^3 + bx^2 + c and this is different from ax^2 +bx + c = 0 \ where \ a\neq 0

2.\ f(x) = \frac{3}{4}x^2 + 2x - 5

This function has an exact match with ax^2 +bx + c = 0 \ where \ a\neq 0

By comparison; a = \frac{3}{4}\ b = 2\ and\ c = -5

3.\ f(x) = \frac{4}{x^2} - \frac{2}{x} + 1

This is not a quadratic function because it follows the form f(x) = \frac{a}{x^2} + \frac{b}{x} + c and this is different from ax^2 +bx + c = 0 \ where \ a\neq 0

4.\ f(x) = 0x^2 - 9x + 7

This is not a quadratic function because it follows the form f(x) = ax^2 +bx + c = 0\ but\ a = 0

Unlike the quadratic function where a\neq 0

So, from the list of given options, only 2.\ f(x) = \frac{3}{4}x^2 + 2x - 5 satisfies the given condition

5 0
2 years ago
Please help me with this question
natulia [17]

what's up

Seek understand, to be understood!

To get the answer we need the formula or source.

The question in another way if 4cm=1.2km, what is the 10cm=--------

first, you have to use the crisscross.

4cm=1.2km

10cm= x it is variable  

then, 4xx= 1.2kmx10cm

4x=12km

4x/4= 12/4

x=3km  


4 0
2 years ago
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