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2 years ago

Taylor is 2/3 as old as her cousin. the sum of their ages is 45. how old are taylor and her cousin

Mathematics

1 answer:

kiruha [24]2 years ago

7 0

Her cousin is 27 and Taylor is 18 years old

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In scientific notation, how can you tell if it is less than or greater than 1? Explain

svlad2 [7]

Answer: See below

Step-by-step explanation:

In scientific notation, you can tell that it is greater or less than 1 by looking at the exponent. The scientific notation looks like _.__×10⁻. Note: The little lines are blanks for you to fill in. The dot at the bottom is a decimal.

If the exponent on top of 10 is positive, you are moving the decimal to the right side, making the number greater.

If the exponent on top of 10 is negative, you are moving the decimal to the left side, making it smaller and smaller.

By those statements, you can tell if a number is greater or less than 1 by looking at the exponent.

7 0

3 years ago

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

What number do you multiply 5/3 by to get the product of 1

Usimov [2.4K]

Answer:

3/5

Step-by-step explanation:

Any number multiplied by it's reciprocal will get you the product of 1

(Can you mark me Brainliest)

5 0

2 years ago

Solve 3 (b – 4) = 2 (-26+1)<br><br> please show your work.

ozzi

Answer:

Step-by-step explanation:

3(b-4)=2 b=0.6667

=2(-26+1) 2x-27

=-54

-54 is the answer

8 0

2 years ago

An airplane is flying from New York City to Los Angeles the distance it travels in Miles D is related to the time in seconds T b

tatiyna

Answer:

It takes 85 seconds to go 12.75 miles

Step-by-step explanation:

We are given

An airplane is flying from New York City to Los Angeles

the distance it travels in Miles D is related to the time in seconds T by the equation

$d=0.15T$

we are given to find time when distance is 12.75 miles

so, we can set d=12.75

and then we can solve for T

$12.75=0.15T$

We can divide both sides by 0.15

$T=\frac{12.75}{0.15}$

$T=85$

So,

It takes 85 seconds to go 12.75 miles

6 0

2 years ago