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Svet_ta [14]
3 years ago
14

Factorise completely X^4-5X^3+6X^2+4X+8≤0

Mathematics
1 answer:
love history [14]3 years ago
4 0

Answer:

I think the answer is x-11x^5+12x

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Suppose systolic blood pressure of 17 year female is approximately distributed with a mean of 118mmHg and a standard deviation o
Artemon [7]

Answer:

a) 0.383

b) 0.375

Step-by-step explanation:

a) Calculate each z-score.

z = (x − μ) / σ

z₁ = (112 − 118) / 12 = -0.5

z₂ = (124 − 118) / 12 = 0.5

Use a calculator or z-score table to find the probability.

P(-0.5 < Z < 0.5) = 0.6915 − 0.3085 = 0.383

b) 0.383 × 16 ≈ 6.  So the expected proportion would be 6/16 = 0.375.

8 0
3 years ago
Please help ^^ I'l give u brainest if you get it correct
Nata [24]

Answer:

21

Step-by-step explanation:

84000/4000=84/4=21

4 0
3 years ago
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You have at most 60 minutes to spend in the gym and in the pool. You want to spend more than 30 minutes in the gym and at most 1
Liono4ka [1.6K]

Answer:

YASSSSSSS QUeen

Step-by-step explanation:

5 0
3 years ago
What is the value of x in the equation 4x + 8y = 40, when y = 0.8?
kherson [118]
You would substitute 0.8 in for y and to get the equation 4x+8(0.8)=40. Then, you would simplify and get 4x+6.4=40. Next you would isolate x by subtracting 6.4 from both sides and get the equation 4x=33.6 and then you would divide both sides by 4 to get x=8.4.

The answer is : x=8.4

7 0
3 years ago
PLEASE HELP!:<br>Find the perimeter and area of the rectangle shown.​
Sergio [31]

(6x+20) units

Step-by-step explanation:

Perimeter of rectangle= Lengh+ Breadth+ Length+ Breadth

*Breadth also means width

Perimeter= 3x+4+6+3x+4+6

=6x+8+12

=(6x+20) units

5 0
3 years ago
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