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3 years ago

Simplify the expression (-6i)(-4i) Please help and explain answer if you can!

Mathematics

2 answers:

Leno4ka [110]3 years ago

6 0

(-6i)(-4i) would be 24i
A negative times negative is positive. 6 times 4 is 24.

fiasKO [112]3 years ago

6 0

Answer: -24

Step-by-step explanation:

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Earth weight is 5.9736 x 10^24 Kg and Venus is 4.8685 x 10^24 Kg. What is the combined weight of Earth and Venus ?

Nuetrik [128]

Answer:

d)1.08421 x 10^25 Kg

Step-by-step explanation:

The combined weight of these two bodies would be the addition of the masses of the two bodies.

Given that Earth weight is 5.9736 x 10^24 Kg and Venus is 4.8685 x 10^24 Kg,

The combined weight of Earth and Venus

= 5.9736 x 10^24 Kg + 4.8685 x 10^24 Kg

=10^24(5.9736 + 4.8685)

= 10.8421 × 10^24 Kg

In standard form,

= 1.08421 × 10^25 Kg

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4 years ago

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The third term of a sequence is 36. Each term after the first is three times the previous term.

Yuri [45]

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3 years ago

The Average of 16 and x is 21 <br> Find x?<br><br> Please answer quick!

givi [52]

Answer:

x = 26

Step-by-step explanation:

There are two numbers and average is the sum of a certain amount of numbers divided by the same amount.

21 × 2 = 42

42 - 16 = 26

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3 years ago

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3 years ago

Which expression defines Sn for an = 5(1/3)^n?

disa [49]

If the first term is 5/3 and the common difference is 1/3. Then the infinite sum of the geometric series will be 2.5.

<h3>What is a series?</h3>

The sum of sequence terms is a series. That is, it is a list of integers connected by addition operations.

The sequence is given in the form of a variable.

$\rm a_n = 5 \left (\dfrac{1}{3} \right)^{n}$

The first term will be

$\rm a_1 =\dfrac{5}{3}$

And the common ratio will be

$\rm r =\dfrac{1}{3}$

Then the sum of the geometric series will be given as

$\rm S_{\infty} = \dfrac{a_1}{1-r}\\\\\\S_{\infty} = \dfrac{5/3}{1-1/3}\\\\\\S_{\infty} = \dfrac{5/3}{2/3}\\\\\\S_{\infty} = \dfrac{5}{2}\\\\\\S_{\infty} = 2.5$

More about the series link is given below.

brainly.com/question/10813422

#SPJ1

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2 years ago