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ivolga24 [154]
3 years ago
6

Please help thank you so much!

Mathematics
1 answer:
Illusion [34]3 years ago
4 0

Answer:

95

Step-by-step explanation:

Average =  

Sum

Count

=  

332

4

=  83

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kenny6666 [7]
No correlation = scattered randomly on a pilot graph
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3 years ago
Find the solution set (x,y,z) of the system:<br> 3x-2y+4z=6<br> 2y-3z=20<br> 6z=12
gizmo_the_mogwai [7]

Answer:

The solution is x = 8, y = 13 and z = 2.

Step-by-step explanation:

We are given a system of equations with the variables x, y, and z from which we have to solve for x, y, and z.

The equations are

3x - 2y + 4z = 6 ........ (1)

2y - 3z = 20 .......... (2)

6z = 12 ......... (3)

Now, from equation (3),  we get z = 2.

Now, putting z = 2 in equation (2) we get

2y = 20 + 6 = 26  

⇒ y = 13

Now, from equation (1), putting y = 13 and z = 2, we get  

3x = 6 - (4 × 2) + (2 × 13) = 24

⇒ x = 8

So the solution is x = 8, y = 13 and z = 2. (Answer)

4 0
3 years ago
What is the value of x to the nearest tenth ? <br><br> A.) 4.7<br> B.) 21.4<br> C.) 0.5
lara31 [8.8K]
I will say that is B) i'm not sure
7 0
4 years ago
Read 2 more answers
2tan(45-A)/1+tan^2(45-A)=cos2a
AVprozaik [17]

Answer:

Let θ = (45 - A)°.

=> 2Tanθ/ 1 + Tan²θ

=> 2Sinθ/Cosθ / 1 + Sin²θ / Cos²θ

=> 2Sinθ/Cosθ/ Cos²θ + Cos²θ / Cos²θ

=> 2Sinθ/Cosθ/ 1 / Cos²θ

=> 2SinθCos²θ/Cosθ

=> 2SinθCosθ  

=> Sin2θ

But we assumed θ = (45 - A)°,

=> Sin2(45 - A)

=> Sin(90  - 2A)  (∵ Sin(90 - θ) = Cosθ)

=> Cos2A

= R.H.S

Hence proved.

Step-by-step explanation:

3 0
3 years ago
A card is drawn from a standard deck of
Gala2k [10]

Step-by-step explanation:

Total number of outcomes = 52 , since each deck consists of 52 cards

probability = Number of favorable outcomes/ Total number of outcomes

a) Number of favorable outcomes = Number of club cards = 13

P(club) =13/52 = 1/4

b) Number of favorable outcomes = Number of red cards = 26

P(red card) = 26/52 = 1/2

c) Number of favorable outcomes = Number of cards that are not hearts = 39/52 = 3/4

7 0
3 years ago
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