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3 years ago

Will give brainly to whoever actually answers

Mathematics

1 answer:

Vlada [557]3 years ago

8 0

An essential question should be clear and of interest to the writer

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Compare the decimals 16.30 and 16.3. Which comparison is correct? A. 16.30 < 16.3 B. 16.30 = 16.3 C. 16.30 > 16.3 Q

SSSSS [86.1K]

B. 16.30 = 16.3

if there is a 0 in a decimal and it is the farthest right place value it is the same as if the 0 wasn't there

7 0

3 years ago

Is 83 cm greater than or less than 1 m?

o-na [289]

IT'S OBVIOUSLY LESS THAN 1 M.
1 m = 100 cm
It's LESS.

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3 years ago

A: What are the solutions to the quadratic equation x2+9=0? B: What is the factored form of the quadratic expression x2+9? Selec

Paraphin [41]

Answer:

A. The solutions are $x=3i,\:x=-3i$ .

B. The factored form of the quadratic expression $x^2+9=(x-3i)(x+3i)$

Step-by-step explanation:

A. To find the solutions to the quadratic equation $x^2+9=0$ you must:

$\mathrm{Subtract\:}9\mathrm{\:from\:both\:sides}\\\\x^2+9-9=0-9\\\\\mathrm{Simplify}\\\\x^2=-9\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\x=\sqrt{-9},\:x=-\sqrt{-9}$

$x=\sqrt{-9} = \sqrt{-1}\sqrt{9}=\sqrt{9}i=3i\\\\x=-\sqrt{-9}=-\sqrt{-1}\sqrt{9}=-\sqrt{9}i=-3i$

The solutions are:

$x=3i,\:x=-3i$

B. Two expressions are equivalent to each other if they represent the same value no matter which values we choose for the variables.

To factor $x^2+9$ :

First, multiply the constant in the polynomial by $i^2$ where $i^2$ is equal to -1.

$x^2+9i^2$

Since both terms are perfect squares, factor using the difference of squares formula

$a^2-i^2=(a+i)(a-i)$

$x^2+9=x^2+9i^2=\left(-3i+x\right)\left(3i+x\right)$

5 0

3 years ago

3x - 8 = 13 + -2(x - 8)

valentinak56 [21]

Answer:

37/5 or 7.4 or 7 2/5

Step-by-step explanation:

<em>I hope this helps! Have a great day!!</em>

3 0

2 years ago

Divide to find equivalent fractions 40/100=10/10

Aleks04 [339]

Answer:

4/10=1

Step-by-step explanation:

Divide both fractions by 10 and you get 4/10=1

6 0

3 years ago