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Studentka2010 [4]
3 years ago
5

If the average of 2b and 4b is 12, what is the value of b?

Mathematics
1 answer:
rusak2 [61]3 years ago
6 0

Answer:

b=3

Step-by-step explanation:

2b+4b=12

6b^2=12

6b^2 - 6 =12 - 6

b^2/2=6/2

b=3

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yeah Koke prepaid debit card with $20 on it for her first purchase with the car she bought some Paul Ruben how to craft store th
Jlenok [28]

Answer:

she bought 27 yards of ribbon

Step-by-step explanation:

20 - 14.06 = 5.94

5.94/0.22 = 27

3 0
2 years ago
What is 0.0728 correct to two significant figures?
katen-ka-za [31]
0.073.

2SF is 2 numbers excluding preliminary zeros,

In this case you look at the third digit, 8, and then round up to 0.073.

:)
3 0
3 years ago
Two numbers have difference of 0.7 and a sum of 1. What are the numbers?
Readme [11.4K]
We can solve this by setting up 2 equations. We can use any letters like. For now, I'll use x and y.
So now we know that    x - y = 0.7   and    x + y = 1.
Now we can eliminate one of the letters by adding or subtracting one equation from the other. I am going to eliminate y by adding the two together (the y and the -y cancel).
This gives us   2x = 1.7,    and so x = 1.7 ÷ 2 = 0.85
Finally, we can substitute x for 0.85 back into one of the original equations to figure out what y equals. I'm going to use   x + y = 1.
So now we have    0.85 + y = 1,    so y = 1 - 0.85 = 0.15

The numbers, therefore, are 0.85 and 0.15 (you can check by using the other equation).

Hope this helps!
5 0
4 years ago
Could you guys help me in 34 please , I am stuck .<br> I will add points
Sever21 [200]

The answer is (1 3/4, 8 1/4)

This is because if you check the previous values for x and y you can see that you have to add 2/4 to c and y.

Hope this helps!

If it does, it would be helpful to me if you could make me brainliest.

3 0
3 years ago
A bank requires a four-digit access code for each account. The access code is generated using the digits 0–9, and the digits can
yaroslaw [1]

Each number in the code can be 1 of 10 numbers.


The total number of possible combinations is 10 * 10 * 10 * 10 = 10,000

The probability of getting 1234 would be 1/10,000

4 0
3 years ago
Read 2 more answers
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