All categories

3 years ago

Can someone help me?

Mathematics

1 answer:

Eva8 [605]3 years ago

4 0

9514 1404 393

Answer:

see below

Step-by-step explanation:

This is all about number sense: ordering and naming numbers. If you know your multiplication tables and a few key vocabulary words, that's all you need.

1a. perfect square

1b. irrational number

1c. greater than

2a. less than; greater than

2b. perfect square

2c. approximation

3a. square root

3b. square root

3c. approximation

3d. order; less than; less than

_____

When you fill in the blanks, the statements pretty much explain themselves.

Additional comment

For positive numbers, square and square root are operations that preserve order. That is, the square of a larger number is larger than the square of a smaller number. Likewise, the square root of a larger number is larger than the square root of a smaller number. Here, ...

81 > 64 > 44 ⇔ √81 > √64 > √44.

If a number is not a perfect square (a number multiplied by itself), then its square root is irrational.

You might be interested in

Find the equation of the line passing through point (-1, -2) and having slope 1/5. Show work.

STatiana [176]

Answer:

Y=1/5x+ -2

Step-by-step explanation:

Hope this helps

6 0

2 years ago

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:

Density

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.

6 0

3 years ago

Write all the prime numbers between 10 and 30.

insens350 [35]

It's 11, 13, 17, 19, 23 and 29.

5 0

3 years ago

The ration of girls to boys is 3 to 4 if there are 48 boys how many girls are there

Luden [163]

Answer:

There is 36 girls.

Step-by-step explanation:

So basically what I did was that since 4×12 is 48 I did 3×12 which gave me 36 :/

4 0

4 years ago

Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally

sasho [114]

Answer:

a) $P(X$

$P(z$

b) $P(X>7.0)=P(\frac{X-\mu}{\sigma}>\frac{7-\mu}{\sigma})=P(Z1.47)$

$P(z>1.47)=1-P(z$

c) $P(3$

$P(-0.882$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Part a

Let X the random variable that represent the thickness of a population, and for this case we know the distribution for X is given by:

$X \sim N(4.5,1.7)$