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asambeis [7]
1 year ago
14

Which phrase describes an unknown or changeable quantity?

Mathematics
1 answer:
Flura [38]1 year ago
3 0

Answer:

That is a variable.

Step-by-step explanation:

- opposed to a constant which is known and does not change.

You might be interested in
Find the first five terms of each arithmetetic sequence describe a1 = -12 d = 5
Fudgin [204]

Answer:

- 12, - 7, - 2, 3, 8

Step-by-step explanation:

The general terms of an arithmetic sequence are

a, a + d, a + 2d + ....... + a + (n - 1 )d

To obtain consecutive terms in the sequence add d = 5 to the previous term

a_{1} = - 12

a_{2} = - 12 + 5 = - 7

a_{3} = - 7 + 5 = - 2

a_{4} = - 2 + 5 = 3

a_{5} = 3 + 5 = 8

4 0
3 years ago
Can someone plz help me
Goshia [24]

Answer:

Your table might look something like this:

The dads steps:

3

6

9

12

15

18

Sons steps:

5

10

15

20

25

30

You can notice the pattern. If dad walks 3 steps, son walks 5. If dad walks another 3, son walks another 5. And so on. This means dad walks 12 steps when the sin walks 20 steps.

Step-by-step explanation:

The ratio is 3:5. This means dad wlaks 3 steps so son must walk 5 steps basically. So.......... You can now create the table. Y I just have to multiply or divide each side ( of the colon:) so. Whatever you do to one side, you do to the other side. If you x3 on one side, you do it to other. Same goes for division. In the 'table' I did above, I x2 to get 6 and 10. Then I took the 3 and the 5 again and timsed those by 3. You can also change the 6 and the 10. So:

3:5

Then x2

6:10

Then I take the top layer (you can either choose to change the top layer, or layer above as long as you do the same thing to each side. Remember, only x and ÷. No + or-.) and I x3

9:15

Then I could take 9 and 15 and x5

45:75

It's crazy that all these. Ratios mena the same thing! 45 steps from dad would take the son 75 steps. You can also divide the last ratio of 45:75 to find the one you started with, 3:5.

So you get the idea.

It is probably best to do what I did in the table in the answer part because I did a pattern. Take the top layer, and x2, then x3, then x4, ect. Rather then doing random things.

5 0
3 years ago
Identify the terms and like terms in the expression - x - 9x*2 + 12x*2 + 7
alexgriva [62]
The expression - x - 9x^2 + 12x^2 + 7 has 4 terms:
-x, -9x^2, 12x^2, 7

Like terms are:
-9x^2, 12x^2
4 0
3 years ago
Work out 2.6 cos 12° rounded to 2 d.p.
AlexFokin [52]

Answer:

2.54. Calculate the approximate value:2.6 *

Step-by-step explanation:

8 0
2 years ago
Find the nth term of this 5 7 9 11 13
NemiM [27]
Firstly, seeing that the sequence is based on odd numbers I would say that this is the formula (which will allow you to know whatever term):

nth term = 2n-1

Hope this helps!
4 0
3 years ago
Read 2 more answers
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