HELP I NEED TO TURN THIS IN BY TONIGHT [FACTORING-GEOMETRY]

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

8 0

Answer:

1st - 10(n-4)

2nd - 3n^3 x (2n ^3 - 4n^2 -5)

3rd - (k^2-3) x (k^2 +3)

4th 3(x-2)x(x+2)

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PLEASE HELP ME EASY 8TH GRADE MATH!!!!

Degger [83]

Answer: The probability is 3 out of 20

Step-by-step explanation:

7 0

1 year ago

Round the whole number to the given place. 75,801,300 to the nearest million

valina [46]

Answer:

76,000,000

Step-by-step explanation:

Look at the 100,000 place and see whether to round up or down - 8 is larger than 5, therefore 75,000,000 gets rounded up to 76,000,000

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3 years ago

What much expression represents a rational number?

Pie

Answer:

$\displaystyle \frac{2}{7}+\sqrt{121}$

Step-by-step explanation:

Rational Numbers

A rational number is any number that can be expressed as a fraction

$\displaystyle \frac{a}{b}, \ b\neq 0$

for a and b any integer and b different from 0.

As a consequence, any number that cannot be expressed as a fraction or rational number is defined as an Irrational number.

Let's analyze each one of the given options

$\displaystyle \frac{5}{9}+\sqrt{18}$

The first part of the number is indeed a rational number, but the second part is a square root whose result cannot be expressed as a rational, thus the number is not rational

$\pi + \sqrt{16}$

The second part is an exact square root (resulting 4) but the first part is a known irrational number called pi. It's not possible to express pi as a fraction, thus the number is irrational

$\displaystyle \frac{2}{7}+\sqrt{121}$

The square root of 121 is 11. It makes the whole number a sum of a rational number plus an integer, thus the given number is rational

$\displaystyle \frac{3}{10}+\sqrt{11}$