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2 years ago

Is -7 rational or irrational

Mathematics

2 answers:

rusak2 [61]2 years ago

8 0

Answer: A Rational

Step-by-step explanation:

A rational number is one that can be written as an integer over an integer, with non-zero denominator. ie. all your fractions. An irrational number cannot be expressed as a ratio of integers and include numbers such as π,e,√2,ln2 , etc

jok3333 [9.3K]2 years ago

6 0

Answer:

rational. BRAINLIEST??

Step-by-step explanation:

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How would you solve 3x^2-12=0?

Gennadij [26K]

   3x^2 - 12 = 0

Personally, I would divide each side by 3 x^2 - 4 = 0

Then I would add 4 to each side x^2     = 4

Then I would take the square root of each side: x = +4
   x = -4 .

Having found both solutions, I would relax with a cup of tea.

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3 years ago

How do I work this out oof

kakasveta [241]

I am so sorry for giving you the wrong answer at first.

Here's the processs

1x=-0.5555

Move the decimal point in the repeating decimal one space forward

10x=-5.55555

Then subtract

10x=5.5555

x=-0.5555= 9x=-5

Divide both sides by 9

9x=-5

9x/9=-5/9

-5/9 is your final answer!

Hope this helps!

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3 years ago

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S_A_V [24]

Answer:

B. AA similarity postulate

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2 years ago

Find the vertex of this parabola.<br><br><br><br> y = -2x2 + 4x + 12

STatiana [176]

For this case we have the following equation:
$y = -2x ^ 2 + 4x + 12
$
Deriving we have:
$y = -2x ^ 2 + 4x + 12

y '= -4x + 4$
We match zero:
$-4x + 4 = 0
$
We clear the value of x:
$4x = 4

x = 4/4

x = 1$
Then, we substitute the value of x in the equation of the parabola:
$y = -2 (1) ^ 2 + 4 (1) + 12

y = -2 + 4 + 12

y = 14$
Thus, the vertex of the parabola is the ordered pair:
$(x, y) = (1, 14)$
Answer:
The vertice is:
$(x, y) = (1, 14)$

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3 years ago

(This is very confusing)Tania planted five seeds in her garden nadia planted times as many seeds as Tania how many seeds did nad

Fittoniya [83]

There's a number missing from the question. It's supposed to be right before the word "times".
If it were there, the answer would be (5 times that number).
The way the question is written, without that number, there's no answer.

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3 years ago

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