3 years ago

What kind of small objects composes much of the universe?

1 answer:

7 0

Answer:

The Universe is thought to consist of three types of substance: normal matter, 'dark matter' and 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.

Step-by-step explanation:

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Spencer and his sister watched a cartoon movie that was 1 hour and 20 minutes long. After the movie, they played a card game for

liberstina [14]

Answer:

10:45 - they started watching the film at this time

Step-by-step explanation:

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3 years ago

What is the correct answer for this equation here?<br>3(4x – 7) = 135

S_A_V [24]

Answer:

x=13

Step-by-step explanation:

1. divide both sides by 3

2. simplify: 4x-7=45

3. add 7 to both sides

4. 4x=52

5. divide both sides by 4

6. x=13

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3 years ago

If your grade is 68.27 and you get a 15 out of 15 on your test whats your grade now

mixer [17]

Answer:

Step-by-step explanation:

68 + 100 = 168

168/2 = 84

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3 years ago

Suppose that the mean GPA (grade point average) for a random sample of all seventh graders at your school is 3.25 and the mean G

elena-14-01-66 [18.8K]

Answer:

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2 years ago

Express the radical using the imaginary unit, i

Kipish [7]

Answer:

7i.

Step-by-step explanation:

Note : The given expression must be $\sqrt{-49}$ .

We have to write this radical value in the imaginary value.

The given value can be rewritten as

$\sqrt{-49}=\sqrt{49\times (-1)}$

$\sqrt{-49}=\sqrt{49}\times \sqrt{-1}$ $[\because \sqrt{ab}=\sqrt{a}\sqrt{b}]$

$\sqrt{-49}=7\times i$ $[\because \sqrt{-1}=i]$

$\sqrt{-49}=7i$

Therefore, the required expression is 7i.

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3 years ago