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maria [59]
3 years ago
10

What is it simplified in a fraction form

Mathematics
2 answers:
svetoff [14.1K]3 years ago
8 0
What is what? There is no picture or anything
zzz [600]3 years ago
8 0

Answer:

nothing to answer

Step-by-step explanation:

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The authors of a certain paper describe a study to evaluate the effect of mobile phone use by taxi drivers in Greece. Fifty taxi
ladessa [460]

Answer:

The answer is below

Step-by-step explanation:

The mean (μ) = 3.7 m, standard deviation (σ) = 1.17 m, confidence (C) = 95% = 0.95, sample size (n) = 50

a) α = 1 - C = 1 - 0.95 = 0.05

α/2 = 0.05/2 = 0.025

The z score of α/2 is the same as the z score of 0.475 (0.5 - 0.025) which is 1.96. Hence:

The margin of error (E) = z_\frac{\alpha}{2} *\frac{\sigma}{\sqrt{n}  }=1.96*\frac{1.17}{\sqrt{50} } =0.32

The confidence interval = μ ± E = 3.7 ± 0.32 = (3.38, 4.02)

b) This means that we are 95% sure that any distance between the taxi and the lead car is between 3.38 m and 4.02 m

6 0
3 years ago
there are 11 students in summer school. The teacher took a survey of how many pets the students had in their homes. The students
masya89 [10]

Answer:

the median number for this problem is 4

6 0
3 years ago
A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x2h
Tanya [424]

Answer:

  192 cm^3/min

Step-by-step explanation:

Differentiating the volume expression, we get ...

  dV/dt = 2xh(dx/dt) +x^2(dh/dt)

We are given that ...

  x = 4 cm, dx/dt = 2 cm/min, h = 15 cm, dh/dt = -3 cm/min

Putting these values into the formula for volume rate of change, we get ...

  dV/dt = 2(4 cm)(15 cm)(2 cm/min) +(4 cm)^2(-3 cm/min)

  = 240 cm^3/min -48 cm^3/min

  dV/dt = 192 cm^3/min

8 0
3 years ago
Please help to solve this question
sweet-ann [11.9K]

Answer:

10,972yd²

Step-by-step explanation:

the area of a triangle formula is base×height ÷ 2

104×211÷2 = 10972

6 0
2 years ago
R^2+6r-40 factor each expression
bearhunter [10]
(r + 10)(r - 4)

To double check:
r * r is r^2

10 * r = 10r; -4 * r = -4r
Combine to get 6r.

-4 * 10 = -40



3 0
3 years ago
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