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Romashka [77]
3 years ago
7

Solve the system of linear equations by substitution. 2x=y−10 x+7=y

Mathematics
2 answers:
cricket20 [7]3 years ago
8 0

Step-by-step explanation:

2x = y - 10 and x + 7 = y.

By Substitution,

2x = (x + 7) - 10.

=> 2x = x - 3, x = -3.

Therefore y = (-3) + 7 = 4.

The pair of solutions are x = -3, y = 4.

Vedmedyk [2.9K]3 years ago
5 0

Answer:

(-3, 4)

Step-by-step explanation:

2x = y - 10 (y = x +7) so

2x = x +7 - 10

2x = x -3

x = -3

-3 + 7 = y

4 = y

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Evgesh-ka [11]

Answer:

0.234523452345 as a fraction equals 234523452345/1000000000000

Step-by-step explanation:

To write 0.234523452345 as a fraction you have to write 0.234523452345 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.

0.234523452345 = 0.234523452345/1 = 2.34523452345/10 = 23.4523452345/100 = 234.523452345/1000 = 2345.23452345/10000 = 23452.3452345/100000 = 234523.452345/1000000 = 2345234.52345/10000000 = 23452345.2345/100000000 = 234523452.345/1000000000 = 2345234523.45/10000000000 = 23452345234.5/100000000000 = 234523452345/1000000000000

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3 years ago
The sum of two numbers is 44 and the difference is 18. What are the numbers?
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31+13=44 and 13+18=31 so they are 18 apart

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50 divided by 6 with a remandier
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otez555 [7]

Answer:

try with this link https://es.symbolab.com/solver/square-roots-calculator

Step-by-step explanation:

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3 years ago
Identify the correct justification for each step, given that ∠2 and ∠3 are complementary, and m∠1=m∠3.
blondinia [14]

Answer:

Option A is correct because sum of m<2 and m<3 are complementary. So m<2+m<3 =90° .

Step-by-step explanation:

Given: <2 and <3 are complementary angles.

Definition of complementary angles says if two angles sum is equal to 90 degrees then they are called complementary angles.

Statement                                                       Reason

1.<2 and <3 are complementary                 1. Given

2. m<2+m<3 =90°                                         2. Definition of complementary <s

3. m<1= m<3                                                  3. Given

4. m<1+m<2= 90°                                          4.Substitution property of =

5. <1 and <2 are complementary               5. Definition of complementary <s.

Option A matches with the given. We can not use addition properties of equality for statement 2 so, other options are incorrect.

So, according to the given options A is correct.

You can learn more about complementary angles at brainly.com/question/21400774

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