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2 years ago

What is 827 divided by 8

Mathematics

2 answers:

julsineya [31]2 years ago

4 0

827 divided by 8 is 103 r3 i think.

DiKsa [7]2 years ago

3 0

Answer:

103.375

Step-by-step explanation:

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Find the greatest common factor of 15x 2 y 3 and -20x 3 yz.

vekshin1

Multiply the GCF of the numerical part 3 and the GCF of the variable part x^2y to get
3x^2y.

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3 years ago

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a home improvement store advertised 60 sq ft of flooring for $287 including an $80 installation fee write an equation to represe

Leno4ka [110]

60c+80=287

Let c stand for the cost of one square foot. with 60 square feet you get 60c. then add 80 for the installation fee.

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3 years ago

The area of a rectangle is 38.25 square yards and its base is 9 yards. What is the height? Do not round your answer.

Romashka [77]

Answer:

4.25 yards

Step-by-step explanation:

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Height = Area of Rectangle ÷ Base

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3 0

3 years ago

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In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equa

arlik [135]

Answer:

Yes. At this significance level, there is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

Step-by-step explanation:

The question is incomplete:

The significance level is 0.05.

The data is:

Brand X: 91, 100, 88, 89

Brand Y: 99, 96, 94, 99

Brand Z: 83, 88, 89, 76

We have to check if there is a significant difference between the absorbency rating of each brand.

Null hypothesis: all means are equal

$H_0:\mu_x=\mu_y=\mu_z$

Alternative hypothesis: the means are not equal

$H_a: \mu_x\neq\mu_y\neq\mu_z$

We have to apply a one-way ANOVA

We start by calculating the standard deviation for each brand:

$s_x^2=30,\,\,s_y^2=6,\,\,s_z^2=35.33$

Then, we calculate the mean standard error (MSE):

$MSE=(\sum s_i^2)/a=(30+6+35.33)/3=71.33/3=23.78$

Now, we calculate the mean square between (MSB), but we previously have to know the sample means and the mean of the sample means:

$M_x=92,\,\,M_y=97,\,\,M_z=84\\\\M=(92+97+84)/3=91$

The MSB is then:

$s^2=\dfrac{\sum(M_i-M)^2}{N-1}\\\\\\s^2=\dfrac{(92-91)^2+(97-91)^2+(84-91)^2}{3-1}\\\\\\s^2=\dfrac{1+36+49}{2}=\dfrac{86}{2}=43\\\\\\\\MSB=ns^2=4*43=172$

Now we calculate the F statistic as:

$F=MSB/MSE=172/23.78=7.23$

The degrees of freedom of the numerator are:

$dfn=a-1=3-1=2$

The degrees of freedom of the denominator are:

$dfd=N-a=3*4-3=12-3=9$

The P-value of F=7.23, dfn=2 and dfd=9 is:

$P-value=P(F>7.23)=0.01342$

As the P-value (0.013) is smaller than the significance level (0.05), the null hypothesis is rejected.

There is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

3 0

3 years ago

BRAINLIEST FOR THE FIGHT ANSWER!!!

Gemiola [76]

= .91(.85)(.82) = .63427
or 63.427% of the original price

so your answer is B

3 0

3 years ago