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3 years ago

What is a numerical scale?

Mathematics

1 answer:

Masja [62]3 years ago

7 0

A scale displaying digits...

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India has a population density of 840 people per sq. mile. If we estimate the population of the US to be 300,000,000 and the tot

raketka [301]

Answer:

A. 85.7 people/ sq mi

Step-by-step explanation:

<u>Population density is:</u>

Pd = population / area
Pd = 300000000 people / 3500000 sq mi = 85.7 people/ sq mi

Correct option is A

3 0

3 years ago

If log7=a and log…<br> help me solve ths math problem on picture

tatiyna

$\qquad\qquad\huge\underline{\boxed{\sf Answer☂}}$

Let's solve ~

$\qquad \sf \dashrightarrow \: log_{4}(39.2)$

$\qquad \sf \dashrightarrow \: log_{4}( {2}^{3} \times {7}^{2} \times 10 {}^{ - 1} )$

$\qquad \sf \dashrightarrow \: log_{4}( {2}^{3} ) + log_{4}( {7}^{2} ) + log_{4}(10 {}^{ - 1} )$

$\qquad \sf \dashrightarrow \: log_{ {2}^{2} }( {2}^{3} ) + log_{ {2}^{2} }( {7}^{2} ) + log_{ {2}^{2} }(10 {}^{ - 1} )$

$\qquad \sf \dashrightarrow \: \frac{3}{2} log_{2}(2) + \frac{2}{2} log_{2}(7) - \frac{1}{2} log_{2}(10)$

$\qquad \sf \dashrightarrow \: \frac{3}{2} + a - \frac{b}{2}$

That's the required result ~

also you can take it's LCM and write it as :

$\qquad \sf \dashrightarrow \: \dfrac{2a - b + 3}{2}$

3 0

2 years ago

You measure 33 backpacks' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 12

saul85 [17]

Answer:

$E=3.4363$

Step-by-step explanation:

#Given a significance level of $\alpha=1-CI=1-0.90=0.1$ and

$\bar x=36, \ \sigma=12.1 \ n=41,$ the critical value is, $z_\alpha_/_2=z_\alpha_/_0_._0_5=1.645$

#the margin of error can then be calculated as:

$E=z_\alpha_/_2\times\frac{\sigma}{\sqrt n}=1.645\times \frac{12.1}{\sqrt 33}\\\approx 3.4363$

Hence the margin of error is 3.4363

8 0

3 years ago

Colin's shopping basket has items costing $7.90,

jeyben [28]

Answer:

$20 i think

Step-by-step explanation:

7 0

3 years ago

Determine whether the variable is qualitative or quantitative. Is the variable qualitative or quantitative? favorite rock group

kirza4 [7]

Answer:

qualitative

Step-by-step explanation:

Favorite rock group is the qualitative variable because it shows an attribute. It does not depict a quantity or numbers. The favorite rock group will perform and show their ability to deliver music articles so it is showing quality not quantity. It is an attribute.

Variable is defined as the characteristic being studied so it is a qualitative variable meaning it is showing quality of the characteristic.

6 0

3 years ago