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3 years ago

3 x 22 + 7 x 41 - 24 = n

Mathematics

2 answers:

ira [324]3 years ago

8 0

The answer to 3 x 22 + 7 x 41 - 24= n is 329

Sonbull [250]3 years ago

6 0

It's either 329 or 69.

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a Can of soup has a diameter of 2.5 inches and a height of 4 inches. how much metal is needed to make the can? round your answe

Ratling [72]

First the 2 bases have surface area pi*1.25^2*2

Then the side

2.5pi*4=10pi

total of 9.817+31.415

=41.232

This approximation could be further round down for this problem to 41.2

Which makes choice C the correct choice.

7 0

3 years ago

Find all solutions to x³+3x² − 9x − 27 = 0 by factoring the equation.

SCORPION-xisa [38]

Answer:

The solutions are $x=-3,\:x=3$

Step-by-step explanation:

To factor this cubic polynomial $x^3+3x^2-9x-27$ you must:

Group the polynomial into two sections

$x^3+3x^2-9x-27=\left(x^3+3x^2\right)+\left(-9x-27\right)$

Factor out -9 from $(-9x-27)$

$(-9x-27)=-9\left(x+3\right)$

Factor out $x^2$ from $(x^3+3x^2)$

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

$x^3+3x^2-9x-27=-9\left(x+3\right)+x^2\left(x+3\right)$

Factor out common term $x+3$

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

$x^3+3x^2-9x-27=\left(x+3\right)\left(x^2-9\right)$

Factor $x^2-9$

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

$x^3+3x^2-9x-27= \left(x+3\right)\left(x+3\right)\left(x-3\right)$

$x^3+3x^2-9x-27=\left(x+3\right)^2\left(x-3\right)=0$

Using the Zero Factor Theorem: = 0 if and only if = 0 or = 0

$x+3=0, \quad{x=-3}\\x-3=0, \quad{x=3}$

The solutions are

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

3 0

3 years ago

PLS SOLVE BRAILEST GIVEN

Sav [38]

Answer:

|2x|

Step-by-step explanation:

The square root symbol indicates the positive square root. That is, ...

$\sqrt{x^2}=|x|$

Then the square root you show is ...

$\sqrt{(-2x)^2}=|{-}2x|=\boxed{|2x|}$

6 0

2 years ago

Which is a solution to 2x + 1 = 21?

Bezzdna [24]

Answer:

x = 10 is your answer

- Explain -

Step 1: subtract 1 from both sides (subtraction of equality)

which will give us:

2x = 21 - 1

which equals to

2x = 20

Step 2: Divide both sides by 2

which is

2x/2 = 20/2

2/2 = 1 and 20/2 = 10

Therefore the answer is x = 10

4 0

3 years ago

Which number goes in the box to make a true equation?<br> ]X 10 = 42.000

kherson [118]

Answer:

x=4200

Step-by-step explanation:

10x=42000

x=4200

5 0

3 years ago