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4 years ago

Explain how you can use a quick picture to find 3×2.7

2 answers:

6 0

5×2.7=13.5
7×2=35, carry the 3.
5×2=10, then add the 3 that was on top and then bring down the final result 13.
Once you've done that you have 135. Your final step is to move the decimal one place to the left which you then get 13.5.
Your final result is 13.5.
Hope this helped.

DanielleElmas [232]4 years ago

5 0

Here is an quick example A "quick picture" is an estimate than? 5 x 2.7 ..... 5 x 3= 15 Its been a long time since elementary school and I do not remember "quick picture" The question was How can you use a "quick picture" to find 5 x 2.7? the answer is 13.5.......an estimate would be 15
dose this help?

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Answer:

Respuesta. Respuesta: El Teorema de Pitágoras sirve para resolver una multitud de problemas; por ejemplo de, cálculo de distancias en el plano, en los mapas, en la realidad. ... En general, el Teorema de Pitágoras se puede utilizar para hallar longitudes en donde intervienen triángulos rectángulos.

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4 years ago

Will uses 3 1/4 ounces each of 5 different types to make fruit smoothies. How many ounces did he use

abruzzese [7]

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3 years ago

According to Runzheimer International, a typical business traveler spends an average of $281 per day in Chicago. This cost inclu

Zinaida [17]

Answer:

The correct answer is - 97.74%.

Step-by-step explanation:

Given:

sample mean = 281

Std Dev = 47 ==> Sample

Std Dev (s) = std dev/sqrt(n) = 6.0677

Solution:

Find : P( x > 268 )

z = ( x - u )/s = ( 268 - 281 )/6.0677

= -1.9558

then, P( x > 270) = P( Z > -1.9558)

= P( Z <1.9558)

= 0.9747

change into percentage:

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3 years ago

If the domain of f(x)=-x² is integer values of x such that -3≤x<0, find the range.

slamgirl [31]

The range is the resulting y-values we get after substituting all the possible x-values.

$\text{The domain:}\\\\-3\leq x < 0\to\{-3,\ -2,\ -1\}\\\\\text{The range:}$

Substitute the values of x to the equation of the function:

$f(-3)=-(-3)^2=-9\\\\f(-2)=-(-2)^2=-4\\\\f(-1)=-(-1)^2=-1\\\\\boxed{\{-9,\ -4,\ -1\}}$

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3 years ago

How often do college students engage in particular activities using their cellphones? A researcher

soldi70 [24.7K]

Answer:

A. Both numbers are statistics.

Explanation:

The number 94.6 is an average measure from a sample. It is the mean of a sample.

The number 65.3 is the standar deviation of a sample.

Then, thus numbers are used to estimate the values of the population.

The true mean and the standard deviation of a population are constant numbers; many times unknown (specially when the population is too big). As ,those values are parameters of the population, regardless they are known or not.

When, they are not known, the statistician must estimate them. The statistician does it using samples (one or more). Such estimated values are not parameter but statistics.

Statistics are values for a sample and may (in general will) vary from sample to sample, while the parameters, which belong to the population are fixed values.

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3 years ago