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Anton [14]
3 years ago
5

Help please!! Thank you

Mathematics
2 answers:
Firdavs [7]3 years ago
5 0

Answer:

D

Step-by-step explanation:

-3, 3, 6, 9, 15, 18, 21,

Sonja [21]3 years ago
5 0
Just list all the integers in that range, and check each one to see if it matches the requirements. (You can avoid checking every single one if you notice the pattern). Then count how many matches there were.

Matches: [-3, 3, 6, 9, 15, 18, 21]
There are seven matches.
Answer D.

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Solve for x. -0.65 + 0.45x = 5.4
FinnZ [79.3K]

Answer:

x = 13.444 ... (repeating decimal) or;

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Step-by-step explanation:

-0.65 + 0.45x = 5.4

First we will add 0.65 to each 'side' of the equation.

0.65 + (-0.65) + 0.45x = 0.65 + 5.4

        0.65 + (-0.65) = 0

        0.65 + 5.4 = 6.05

Input the numbers, and now the equation looks like this:

0 + 0.45x = 6.05

Remove the zero:

0.45x = 6.05

Divide each 'side' by 0.45.

0.45x ÷ 0.45 = 6.05 ÷ 0.45

        0.45x ÷ 0.45 = 1x = x

        6.05 ÷ 0.45 = 13.444 ... repeating decimal

Input the numbers, and now the equation looks like this:

x = 13.444 ... repeating decimal

We can also write this as:

x = 13 4/9 in fraction form

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Figured what out 
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