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tatuchka [14]
3 years ago
9

Do you think three weeks (21 days) is enough time to observe all of the Moon’s phases? Why or why not?

Mathematics
1 answer:
In-s [12.5K]3 years ago
4 0

Answer:

No, because all the moon phases last 28 days. 21 days is not enough time to observed them.

Step-by-step explanation:

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Eight times a number plus five times another number is -13 the sum of the two numbers is 1 what are these numbers
m_a_m_a [10]

The two numbers are -6 and 7

<em><u>Solution:</u></em>

Given that eight times a number plus five times another number is -13

The sum of two numbers is 1

To find: the two numbers

Let the two numbers be "a" and "b"

From given information,

Eight times a number plus five times another number = -13

eight times a number "a" + five times another number "b" = -13

8a + 5b = -13 ---- eqn 1

Also given that sum of two numbers is 1

sum of two numbers = 1

a + b = 1 ---- eqn 2

<em><u>Let us solve eqn 1 and eqn 2 to find values of "a" and "b"</u></em>

From eqn 2,

a = 1 - b ----- eqn 3

Substitute eqn 3 in eqn 1

8(1 - b) + 5b = -13

8 - 8b + 5b = -13

8 - 3b = -13

-3b = -13 - 8

-3b = -21

<h3>b = 7</h3>

Substitute b = 7 in eqn 3

a = 1 - 7

<h3>a = -6</h3>

Thus the two numbers are -6 and 7

4 0
3 years ago
Three pigs entered a race around a track. Piggly takes 6 minutes to run one lap. Piglet takes 3 minutes
mario62 [17]

Step-by-step explanation:

Nnnnnnnnnnnn is a great way to get a new phone and I am not sure if you are interested in the position of the position and the position of the company and the company is a

8 0
2 years ago
What value do the roman numerals CIX represent?
saw5 [17]

Answer:

The Roman numerals CIX equals to 109.

7 0
3 years ago
When the results of experimentation or historical data are used to assign probability values, the method used to assign probabil
wel

Answer:

Relative Frequency Method

Step-by-step explanation:

If I carry out an experiment involving 25 throws of a coin and I obtain 13 Heads(H), the Relative Frequency of obtaining Heads will be 13/25.

Now if I intend to find out approximately how many Heads will

occur in 300 throws, I simply use the result or experimentation data that I have.

This is done below:

Relative Frequency of Obtaining a Head= 13/25 =0.52

Number of Heads obtained in 300 throws

= Relative Frequency X Number of Trials

=0.52 X 300

=156

This is an example of how relative frequency method works.

5 0
3 years ago
The veterinarlan told Sally that her cat needs to lose 5 pounds. A healthy weight loss for her cat would be about 1 pound every
padilas [110]

Answer:

It would take 10 weeks for her cat to lose 5 pounds.

Step-by-step explanation:

4 0
3 years ago
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