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Bond [772]
3 years ago
14

Why doesn't any one give as many points as i do for random questions on brainly

Engineering
2 answers:
Pani-rosa [81]3 years ago
5 0

Answer:

i think its cuz they dont want to like lose points if they do they cant ask their  doubts i just think this is why thx hope you have a beautiful day

Explanation:

erastova [34]3 years ago
4 0

good question i like to give about 20. i think people just are cheapskates for most of their time on this planet. didnt need the 50 though but thanks.

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Explain the benefits of reading A vocabulary section at the beginning of a text
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Answer: Deatiled information

Explanation:

It helps the reader organize and sort information in the text. It provides detailed information about the content of the text. It prepares readers to look for new vocabulary as they read.

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4 years ago
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On the first statistics exam, the coefficient of determination between the hours studied and the grade earned was 80%. The stand
True [87]

Answer:

\left[\begin{array}{ccccc}&DF&SS&MS&F\\Regression&1&7200&7200&72\\Error&18&1800&100\\total&19&900\end{array}\right]

Explanation:

Sample size, n=20

Degrees of freedom is 1

Number of degrees of freedom for error is n-2 hence 20-2=18

Total number of degrees of freedom is 18+1=19

Standard error estimate is s_{y-x}=\sqrt {\frac {SSE}{n-2}}

Here, SSE=(n-2)s_{y-x}^{2}=(20-2)(10)^{2}=1800

Coefficient of determination r^{2}=\frac {SSE}{SS total}

Here, SSR=r^{2}(SSR+SSE)

SSR=\frac {r^{2}}{1-r^{2}} SSE=\frac {0.8}{1-0.8}(1800)=7200

The total sum of squares is

SS total=SSR+SSE=7200+1800=9000

MSR=SSR=7200

MSE=\frac {SSE}{n-2}=\frac {1800}{20-2}=100

F value is given by

F=\frac {MSR}{MSE}=\frac {7200}{100}=100

The ANOVA table is then  

\left[\begin{array}{ccccc}&DF&SS&MS&F\\Regression&1&7200&7200&72\\Error&18&1800&100\\total&19&900\end{array}\right]

4 0
4 years ago
What is the lehr and what purpose does it serve?
levacccp [35]

Explanation:

Step1

Lehr is the long open or closed insulated space for glass manufacturing. Lehr must be large enough to keep the cooling of glass uniform. The function of Lehr is the same as an annealing process in metallurgy.  

Step2

Lehr decrease the cooling and temperature variation in glass production. Uneven temperature creates the internal stress in the glass. Lehr reduces the internal stress in the glass product.  So, the main purpose of the Lehr is to reduce the internal stress and keep the cooling uniform.

5 0
3 years ago
An aluminum cylinder bar ( 70 GPa E m = ) is instrumented with strain gauges and is subject to a tensile force of 5 kN. The diam
Stells [14]

Find the complete solution in the given attachments.

Note: The complete Question is attached in the first attachment as the provided question was incomplete

7 0
4 years ago
Respond with TRUE if the symbol of the valve shown below is
nevsk [136]

Answer:

true

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