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CaHeK987 [17]
3 years ago
12

The equation X^3+3x^2 + 5x+15 = 0 Has how many solutions

Mathematics
1 answer:
Aleks04 [339]3 years ago
8 0

x
=
-
3
,
5
,
-
5
The result can be shown in multiple forms.
Exact Form:
x
=
−
3
,
√
5
,
−
√
5
x
=
-
3
,
5
,
-
5
Decimal Form:
x
=
−
3
,
2.23606797
…
,
−
2.23606797
…
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The answer is by using the measuring tape
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3 years ago
I GIVE BRAINLIEST PLS HELP
ioda
The answer is 8
Here's why:
{ ( \frac{( {6}^{7}) \times ( {3}^{3})  }{(  {6}^{6}) \times ( {3}^{4}  ) } )}^{3}  =   \\ ( \frac{6}{3} ) ^{3}  =  \\ \frac{216}{27}  = 8
The exponents are subtracted one from another when divided.
\frac{ a ^{b} }{ {a}^{c} } =  {a}^{b - c}
We can look at the problem this way:
( \frac{6^{7} }{6 ^{6} }  \times  \frac{3^{3} }{ {3}^{4} } ) = (6^{7 - 6}  \times  {3}^{3 - 4} ) =  \\ ({6}^{1}  \times  {3}^{ - 1} )
Since we have the power of -1 on the 3, we apply this rule:
{a}^{ - b}  =  \frac{1}{ {a}^{b} }
Also this rule because we have the power of 1 on the 6:
{a}^{1}  = a
Then we get this:
(6 \times  \frac{1}{3} )^{3}  = ( \frac{6}{3} )^{3}
We apply the rule:
( \frac{a}{b}) ^{c}   =  \frac{ {a}^{c} }{ {b}^{c} }
We get this:
\frac{{6}^{3} }{ {3}^{3} } =  \frac{216}{27}  = 8
4 0
3 years ago
Deon finished his math assignment in 2/5 hours. Then he completed his chemistry assignment in 1/2 hours. How much more time did
ipn [44]

Answer:

Deon spent 1/10 of an hour more on chemistry than on math

Step-by-step explanation:

7 0
3 years ago
What is −4(−5x+2)−3x−5= -30
alexandr1967 [171]

Answer:

x = -1

Step-by-step explanation:

Step 1: Write equation

-4(-5x + 2) - 3x - 5 = -30

Step 2: Solve for <em>x</em>

<u>Distribute -4:</u> 20x - 8 - 3x - 5 = -30

<u>Combine like terms:</u> 17x - 13 = -30

<u>Add 13 on both sides:</u> 17x = -17

<u>Divide both sides by 17:</u> x = -1

3 0
3 years ago
Read 2 more answers
What is 29.2 x 3/4 I need a the answer please
Stolb23 [73]
Let me help you!!! ok, so remember, it is always easier when you are multiplying one fraction, and one decimal, to keep it simple, and make it either both decimals, or both fractions! so, for instance, i will change the 3/4 into a decimal:
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you get that by dividing the 3 by 4.
Now, you just divide the 0.75 x 29.2, which is (21.9) hope that helps!!!
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