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2 years ago

Convert 240 yards per hour (yd/h) to yards per minute (yd/min).

Mathematics

1 answer:

krek1111 [17]2 years ago

6 0

9514 1404 393

Answer:

4 yd/min

Step-by-step explanation:

Change 1 hour to 60 minutes.

(240 yd)/(1 h) = (240 yd)/(60 min) = 4 yd/min

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In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five tre

yawa3891 [41]

Answer:

$MSE = 10$

Step-by-step explanation:

Given

$SSTR = 200$

$SST = 800$

Required

Determine MSE

This is calculated as:

$MSE = \frac{1}{ddf} * SSE$

Where:

$SSE = SST - SSTR$

$ddf \to$ denominator df

So, we have:

$SSE = 800 - 200$

$SSE = 600$

To calculate the df, we have:

$r = 13$ --- observations

$n = 5$ treatments

So:

$ddf = Total\ df - Numerator\ df$

$Total = n*r-1 = 5*13 -1 = 64$

$Numerator =n - 1 = 5 - 1 =4$

$ddf =64-4=60$

So, we have:

$MSE = \frac{1}{ddf} * SSE$

$MSE = \frac{1}{60} * 600$

$MSE = 10$

6 0

2 years ago

Rationalise 1/√5 please tell

Assoli18 [71]

Answer:

Step-by-step explanation:

1/ $\sqrt{5}$

=1 $\sqrt{5}$ * $\sqrt{5}$ / $\sqrt{5}$

=1* $\sqrt{5}$ / $\sqrt{5}$ * $\sqrt{5}$

=1 $\sqrt{5}$ /5

6 0

2 years ago

A store charges $280 for coat. This price is 40 percent more than the amount it cost the store to buy. At the end-of-season sale

NeX [460]

Let cost price be x
according to question
x + 40% of x = 280
x+ 0.4x=280
1.4x=280
x=200
this 200 is the store cost or cost price for store
30%of 200= 60
according to question,
cost for employee= 200-60= 140

7 0

2 years ago

7r & 5 are like terms.<br> True<br> False

yan [13]

Answer:

False

Step-by-step explanation:

Not at all, 7r and 5 aren't like terms since you can't combine them.

7 0

1 year ago

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How many roots does the graphed polynomial function have?

notka56 [123]

Answer:

Yes the answer is 4

Step-by-step explanation:

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2 years ago

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