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Oksana_A [137]
3 years ago
13

Find The Next Number 12 13 15 17 111 113 117 119 123 ?

Mathematics
1 answer:
Temka [501]3 years ago
5 0
<span>The Next Number is </span>129.

These are the first 10 prime numbers (2, 3, 5...) prefixed with a 1.
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Solve the linear system of equations using the linear combination method.<br><br> {8a−4b=205a−8b=62
11Alexandr11 [23.1K]
Sorry I am a little late...

a = -2

b = -9

Here is how to solve the problem. 

First thing I did was multiply the first equation by -2 so that we can eliminate the the b. After you multiply it by -2, your new equation is -16a + 8b = -40. 

You leave the second equation alone and all you do is combine like terms. So -16a+5a is -11. And you eliminate the b. Then you're going to do -40+62 which is 22. So it's -11a=22 and then you have to solve for a. What I did was I multiplied the whole thing by minus to turn the a positive. So then it's 11a=-22. Pretty easy, the final step is to simplify. -22/11 is -2. ;D 

So there you have your first answer. 

a = -2 

Now we're going to use the first answer to help us find b. 

For the second equation, all you're going to do is plug in that a. 

5 (-2)-8b=62 

-10 - 8b = 62

Now we move the -10 to the other side...

-8b = 62 + 10 

-8b = 72

Multiply the whole thing by negative once again to turn the b positive.

Now we have 8b = -72 

The final step is to simplify. -72/11 = -9

b = -9 

Hope this makes sense! Also I had the same question on my test and I got it right. :)

6 0
3 years ago
Are the two triangles similar?
Jlenok [28]
No

I think that’s it(sorry if I’m wrong)
5 0
3 years ago
Find the oth term of the geometric sequence 4, 16, 64, ...
Andrews [41]

Answer:

256

Step-by-step explanation:

All of these are multiples of 4.

4^2= 16

4^3=64

4^4=256

4 0
2 years ago
Read 2 more answers
11. Find the H.C.F of 96 and 120.<br>​
Veronika [31]

Answer:

24.

Step-by-step explanation:

The factors of 96 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96

The factors of 120 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120

Then the greatest common factor is 24.

3 0
3 years ago
Write the ratio that compares 1 1/2 cups of flour to 2 eggs.
Sholpan [36]

Answer:

Step-by-step explanation:

A ratio is comparison between two values in math

1.5 cups of flour : 2 eggs

1.5 cups of flour to 2 eggs

\frac{1.5 cups of flour}{2 eggs }

6 0
2 years ago
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