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SVETLANKA909090 [29]

3 years ago

5

Of the 60 seeds that you plant, 80% germinate. How many seeds germinate?

2 answers:

Alinara [238K]3 years ago

8 0

Im not sure but I think its 48, excuse me if im wrong.

murzikaleks [220]3 years ago

8 0

Hea right its 48 here is how it works

4/5 by 60/1
5into 60 =12
multiple that by 4

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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

What is one fith times 15

Rus_ich [418]

One fifth is the same as $\frac{1}{5}$ and 15 is the same as $\frac{15}{1}$

So just times across, $\frac{1}{5}$ × $\frac{15}{1}$
Resulting in(1 x 15= 15, and 5 x 1= 5), $\frac{15}{5}$

If you need/want to reduce it, divide both numbers by 5. Leaving you with the simplified answer of $\frac{3}{1}$ or 3. Either answer works. :)

If you have any questions, just comment them down below :)

4 0

3 years ago

Read 2 more answers

Show all the steps that you use to solve this problem.

Monica [59]

Answer:

11

Step-by-step explanation:

5 x 2 =10

10+6=16

16-1=15

5 0

2 years ago

Read 2 more answers

The circumference of a garden is 91.06 feet. what is the diameter of the garden?

Romashka-Z-Leto [24]

Answer:

radius = 14.5 feet

Step-by-step explanation:

91.06 / 3.14 = diameter = 29

radius = 29/2 = 14.5 feet

4 0

2 years ago

The distance between Dania and Hollywood is shown on the map. What is the actual distance between Dania and Hollywood?

pishuonlain [190]

Answer:

15 miles

Step-by-step explanation:

If there are 2.5 inches and 1 inch is 6 miles, then just multiply 6 by 2.5 to get 15

6*2.5=15

8 0

3 years ago