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serious [3.7K]
3 years ago
7

Rationalise the denominator. Simplify your answer fully. 1/r6+r5

Mathematics
1 answer:
Arlecino [84]3 years ago
6 0
Here: 1/r6+r5
= r11+1/r6
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-5f, -8c, 40f, 10c happy math..ing
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2 years ago
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How many square feet of outdoor carpet will need for this hole?
Dmitriy789 [7]

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42 ft², IF that side is 6ft, it was cut off in the picture. (I can rework if it isn't 6ft.)

Step-by-step explanation:

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3 years ago
A teacher was interested in finding out whether a special study program would increase the scores of students on a national exam
bija089 [108]

Answer:

Check the explanation

Step-by-step explanation:

Going by the first attached image below we reject H_o against  H_1 if obs.T > t_{\alpha /2;n-1}

here obs.T=1.879

\therefore obs.T \ngtr 2.447=t_{0.025;6}

we accept H_o:\mu _{1}=\mu_{2} at 5% level of significance.

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1.

this problem is simillar to the previous one except the alternative hypothesis.

Let X_i's denote the bonuses given by female managers and Y_i's denote the bonuses given by male managers.

we assume that X_i \sim N(\mu _{1},\sigma _{1}^{2}) Y_i \sim N(\mu _{2},\sigma _{2}^{2}) independently

We want to test H_0:\mu_{1}=\mu_{2} vs H_1:\mu_{1}\neq \mu_{2}

define D_i=X_i-Y_i , i=1(1)8

now D_i\sim N(\mu _{1}-\mu _{2}=\mu _{D},\sigma _{1}^{2}+\sigma _{2}^{2}=\sigma _{D}^{2}) , i=1(1)8

the hypothesis becomes

H_0:\mu_{D}=0 vs H_1:\mu_{D}\neq 0

in the third attached image, we use the same test statistic as before

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3 0
2 years ago
Minute Maid states that a bottle of juice contains 473 mL. Consumer groups are interested in determining if the bottles contain
olga2289 [7]

Answer:

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We are given the following in the question:

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Sample size, n = 30

Sample standard deviation, σ = 0.2

First, we design the null and the alternate hypothesis

H_{0}: \mu = 473\text{ mL}\\H_A: \mu < 473\text{ mLinches}

Representation of \mu

  • \mu is the population parameter that represents the population mean.

Thus, for the given situation \mu represents:

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2 years ago
The function of f(n) = log 0.98(n/50) models the time, f(n), in minutes, required for the concentration of a certain chemical to
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Answer:

A,B,C

Step-by-step explanation:

took the test

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3 years ago
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