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lutik1710 [3]
3 years ago
7

Solve the system of linear equations by substitution: x+y=27, y=x+9

Mathematics
1 answer:
blondinia [14]3 years ago
3 0

Answer:

you answer will be x=9 , y=18

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6x^2+x-12 in factored form
pychu [463]
6x²+x-12

the first thing we need to do is find 2 numbers that add up to equal the middle term (1) but multiply together to get a product of -72 (-12*6)

two numbers that would fit this is 9 and -8
so now we placed 9x and -8x in place of the middle term

6x²+9x-8x-12

now we look for whats common between the first two numbers and divide them out

6x²+9x = 3x(2x+3)

now we do the same with the last two numbers

-8x-12 = -4(2x+3)

notice how the numbers in brackets are the same (2x+3)
we will keep (2x+3) and then combine the numbers on the outside

once we do that you should get an answer of 

(3x-4)(2x+3)

hope this helped!


5 0
3 years ago
Four more than three times a number is thirteen. What is this number?
Ostrovityanka [42]

Answer:

3

Step-by-step explanation:

13-4=9

9/3=3

4 0
3 years ago
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To find the average(mean) of a set of numbers, you first find the sum of the numbers and then divide the sum by the number of nu
photoshop1234 [79]

Answer:

what are the numbers you wsnt to find? if you don't know then you've answeref your own question with this, well, question..!

8 0
4 years ago
5/6 times 1/3. dived by 2/3 divided 1/2
mrs_skeptik [129]

Answer:

5/6 (please give branliest)

Step-by-step explanation:

5/6 * 1/3 = 5/18

5/18 / 2/3 = 5/12

5/12 / 1/2 = 5/6

8 0
3 years ago
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$425 is invested into an account that earns 6% compounded monthly. Find how much the account is worth in 15 years.
Masja [62]

Answer:

Future Balance

$1,044

Step-by-step explanation:

Compound interest is simple- It’s the interest you earn on both your original deposit and on the interest that your money earns. Compound interest allows your savings to grow faster over time.  In an account that pays interest, the earnings are typically added to the original principal at the end of every compounding period. That's often daily or monthly. Each time interest is calculated and added to the account, the larger balance results in more interest earned than before. This is what’s meant by compound interest. Note that high-interest savings accounts earn money faster than accounts with lower yields.

6 0
3 years ago
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