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3 years ago

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Mathematics

2 answers:

Tanya [424]3 years ago

8 0

Answer:A=-8

Step-by-step explanation:

Reptile [31]3 years ago

4 0

Answer:

An apple, potato, and onion all taste the same if you eat them with your nose plugged

Step-by-step explanation:

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Sentence using the word chortled

Marrrta [24]

Idk. "squirtle, use chortled attack!!!"

3 0

3 years ago

Let f(x)=-6x+3 And g(x)=5x+4 Find F×G and state it's domain

a_sh-v [17]

Answer:b

Step-by-step explanation:

6 0

3 years ago

Tina thinks of two numbers. She says, "My two numbers add up to 12. Three times my first number plus twice my second number is 2

butalik [34]

The first number is 5 and the second number is 7

8 0

3 years ago

What much expression represents a rational number?

Pie

Answer:

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

Step-by-step explanation:

<u>Rational Numbers</u>

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

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

As with the first number, the square root is not exact. The sum of a rational number plus an irrational number gives an irrational number.

Correct option:

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

6 0

3 years ago

If anyone could do this you be a literal life saver

mylen [45]

Answer:

Step-by-step explanation:

I really hope that solving a few trig questions can forestall death. That would be a really easy way to get rid of the C 19 restrictions and a myriad other diseases. BETTER LIFE THROUGH MATH will be our motto.

11) tan45 = x/13 x = 13

cos45 = 13/y y = 13√2

12) sin30 = 4/x x = 8

tan30 = 4/y y = 4√3

13) sin60 = 21/x x = 21(2/√3) = 42/√3

y = xcos60 = (42/√3)(1/2) = 21/√3

14) cos45 = x/22 x = 22/√2

sin45 = y/22 y = 22/√2

15) Height = 24sin30 = 12

cos 45 = 12/x x = 12/√2

tan45 = y/12 y = 12

cos30 = z/24 z = 24(√(3)/2) = 12/√3

8 0

3 years ago