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3 years ago

Find the unit rate of buying a $36 shirt and getting another one for equal or lesser value for free

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

3 0

Answer:

each shirt would cost $13≤ unit rate <$36

Step-by-step explanation:

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Which statement makes the open sentence 12+3x=30

Sergio [31]

12 + 3x = 30 // what is x?
3x = 18
x = 6

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3 years ago

If the coefficient of correlation is a positive value, then the slope of the regression line

ratelena [41]

Answer:

must also be positive

Step-by-step explanation:

The sign of the correlation coefficient indicates whether the fitted line is sloping upwards or downwards, so it should be consistent with the sign of the slope of the fitted line. so if the correlation line is poitive so should the regression line

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3 years ago

Help with both please

ipn [44]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

In a research laboratory, a scientist measures the mass of a 1-carat diamond and finds it to be 200 milligrams, measured to the

vlada-n [284]

Answer:

$D=3.5\ gr/cm^3$

Step-by-step explanation:

<u>Density</u>

The density of an object of mass m and volume V is given by

$\displaystyle D=\frac{m}{V}$

It can be expressed in common units like $gr/lt, Kg/m^3, gr/cm^3$ or any other combination of proper mass [M] by volume [V] units.

The data provided in the question is

$m=200\ mg = 0.2\ gr$

$V=0.057\ cm^3$

Thus, the measured density is

$\displaystyle D=\frac{0.2\ gr}{0.057 \ cm^3}$

$\boxed{D=3.5\ gr/cm^3}$

We have expressed the result with 1 decimal place because the mass was measured to the nearest hundred milligrams (or one-tenth grams). Any further decimal is senseless because that precision comes from calculations, not from measurements.

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3 years ago

Express 0.00048 in scientific notation. hintx

Olenka [21]

(number less tan 10 and more than or equal to 1) times (10^m)

0.00048=4.8 times 10^4

answer si 4.8*10^4

6 0

3 years ago