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2 years ago

Please answer w/ an explanation of number system. Also tell me if you want to do my Khan Academy

Mathematics

2 answers:

blagie [28]2 years ago

4 0

Answer:

B: Integer

Step-by-step explanation:

I also did that khan academy and got it right

Nataliya [291]2 years ago

3 0

Answer:

None of the choices

Irrational, Real, Complex

Step-by-step explanation:

Number system:

(since I'm having image upload trouble I'll just do an outline format)

Complex numbers (all numbers we have)

I. Imaginary

- cannot be plotted on number line

-include i, sqrt of (-) #s, variables, |-#s|, etc.

(This includes pure imaginary and imaginary #s: In terms of i, pure imaginary is only b*i, and imaginary is a+bi, a and b being integers)

II. Real numbers: can be plotted on # line (have a real value)

A. Irrational numbers

- Non-repeating, non-terminating (ending) decimals

E.X. : 1.12343123510971324...

- Cannot be expressed as a fraction of 2 integers

- Has a real value (pi, phi, tau, square roots of non-perfect non-negative squares e.x. \sqrt2)

B. Rational

- Can be expressed as fraction of 2 integers

E.x. 0.3333... = 1/3

- Can be expressed as terminating or repeating decimal

E.x. 0.3232... , 0.32, etc.

1. Includes: Fractions and terminating/repeating decimals

2. Integers: ..., -3, -2, -1, 0, 1, 2, 3, ...

a. Whole numbers: 0, 1, 2, 3, ...

i. Counting/natural numbers: 1, 2, 3, ...

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Answer: P(5A) = 0

Step-by-step explanation:

There are four aces in total in a 52 card deck. Therefore the probability of getting 5 aces can be expressed as;

P(5A) = 4/52 × 3/51 × 2/50 × 1/49 × 0/48 = 0

Therefore, it is impossible to get 5 aces from a standard 52 cards deck

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3 years ago

The ice skating rink rents 25 pairs of skates each hour. Write an expression that represents the pairs of skates rented in h hou

Nookie1986 [14]

175 pairs of skates are rented for 7 hours.

Step-by-step explanation:

Given,

Pairs of skated rented each hour = 25

Let,

Number of hours = h

Total pairs rented = T

T = Pairs rented each hour * number of hours

T = 25h

Evaluate the expression for 7 hours.

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$T=25(7)\\T=175$

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2 years ago

One cubic meter of water weighs approximately 2200 pounds. There are 100 cm in one meter. If you have a box-shaped fish tank tha

Diano4ka-milaya [45]

Answer:

158.4 pounds

Step-by-step explanation:

first find the volume of the tank

$V = 30 \times 30 \times 80$

$V = 72000 cm^3$

to convert this to m^3 we know that 1m = 100cm

$V = 72000 cm^3 \times \left(\dfrac{1\,\text{m}}{100\,\text{cm}}\right)^3$

$V = 72000 cm^3 \times \left(\dfrac{1\,\text{m}^3}{100^3\,\text{cm}^3}\right)$

the cm^3 cancel out.

$V = \dfrac{72000}{100^3} m^3$

$V = 0.072\,m^3$

by simply converting the side-lengths to meters beforehand can give you this answer directly:

$V = 0.3 \times 0.3 \times 0.8 = 0.072 m^3$

it is given that 1 meter cube of water weighs about 2200 pounds.

$1\,m^3 = 2200 \,\text{lb}$

multiply both sides with 0.072 to find our answer:

$1\,m^3 \times 0.072 = 2200 \times 0.072 \,\text{lb}$

$0.072\,m^3 = 158.4 \,\text{lb}$

hence the weight of the water in the tank would be 158.4 pounds!

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2 years ago

a parallelogram has one angle that measures 40. what are the measures of the other three angles in the parallelogram?

KonstantinChe [14]

Since one side is 40°, you subtract that from 180.

180° - 40°= 140°.

So therefore your missing side lengths are 140, 40, and 140.

hopefully this helps

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2 years ago

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faust18 [17]

Answer:

13 batches of cookies

Step-by-step explanation:

12 2/3 ÷ 2/3 = 12.6666667, it's 13 because 2/3 as a decimal is .6666666 and .6666667 is more than 2/3. So you add one to the answer.

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2 years ago

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