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3 years ago

Al multiplicar dos números negativos obtenemos como resultado un número

Mathematics

1 answer:

Rufina [12.5K]3 years ago

5 0

Answer:

positivo

Step-by-step explanation:

dos números multiplicados negativos siempre se vuelven positivos.

espero que esto ayude :)

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Helppppppppppppppppppppppppp

kumpel [21]

Answer:
x = 10

Explanation:
Note the following rules before we begin:
2 ln(a) = ln (a²)
ln (a) + ln (b) = ln (ab)

Now, for the given:
ln(20) + ln(5) = 2 ln(x)
ln(20*5) = ln(x²)
ln(100) = ln(x²)

This means that:
100 = x²
Therefore:
either x = 10 .........> acceped
or x = -10 .........> rejected as no negatives are allowed within ln functions

Hope this helps :)

5 0

3 years ago

Messed up and didnt put the attachment on the last post

Margarita [4]

Answer :-

9(3+√3) feet

Step by step explanation :-

A triangle is given to us. In which one angle is 30° and length of one side is 18ft ( hypontenuse) .So here we can use trignometric Ratios to find values of rest sides. Let's lable the figure as ∆ABC .

Now here the other angle will be = (90°-30°)=60° .

In ∆ABC ,

=> sin 30 ° = AB / AC

=> 1/2 = AB / 18ft

=> AB = 18ft/2

=> AB = 9ft .

Again In ∆ ABC ,

=> cos 30° = BC / AC

=> √3/2 = BC / 18ft

=> BC = 18 * √3/2 ft

=> BC = 9√3 ft .

Hence the perimeter will be equal to the sum of all sides = ( 18 + 9 + 9√3 ) ft = 27 + 9√3 ft = 9(3+√3) ft .

<h3>Hence the perimeter of the triangular pathway shown is 9 ( 3 + √3 ) ft .</h3>

3 0

3 years ago

John scored 75, 82, 66, and 78 on his history tests. What score must John get on his next test in order to have a mean score of

Pachacha [2.7K]

[75 + 82 + 66 + 78 + x ] / 5 = 76

301 + x = 380

x = 79

3 0

3 years ago

Read 2 more answers

Evaluate the expression 6+[(-24)÷6]/19

zlopas [31]

The order of operations is defined by the acronym PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction).
Therefore
6 + [(-24) ÷ 6] / 19
= 6 + [ -24/6 ] / 19 handle parentheses first
= 6 + (-4) /19
= 6 - 4/19 handle division
= 110/19
= 5 5/9

Answer:
$\frac{110}{19} \,\, or \,\, 5 \, \frac{5}{19} \,\, or \,\, 5.79$

4 0

4 years ago

A + 6 + 3a + 5a2 + 2a + a2 + 1

Alexxandr [17]

Answer:

6a2 + 6a + 7

Step-by-step explanation:

5 0

3 years ago