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frozen [14]
3 years ago
11

How long before there are only 300 left

Mathematics
1 answer:
Reil [10]3 years ago
7 0
Years and years a long time ahead
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One number added to three times another number is 24. Five times the first number added to three times the other number is 36. F
Lera25 [3.4K]
Okay, so the equations would be:
x + 3y = 24
3y + 5x = 36

Imma use Substitution to solve this:
x = -3y + 24

3y + 5(-3y + 24) = 36
3y - 15y + 120 = 36
-12y + 120 = 36
-12y = -84
y = 7

x = -3(7) + 24
x = -21 + 24
x = 3

So the first number (x) would be 3 and the second number (y) would be 7.
5 0
3 years ago
Which is NOT used to reach conclusion in a formal proof?
Sav [38]
The answer is Inductive Reasoning


3 0
3 years ago
EASY BRAINLIEST PLEASE HELP!!
DedPeter [7]

Answer:

C. AB = 5.8 cm

Step-by-step explanation:

In trapezoid ABCD, EF is the Midsegment.

.:. EF = {(AB+CD)

.:: 9.2 = {(AB + 12.6)

:: 9.2 x 2 = AB + 12.6

.. 18.4 = AB + 12.6

.. 18.4-12.6 = AB

:: AB = 5.8 cm

6 0
3 years ago
Read 2 more answers
What's is the answer to 15n-19n
Art [367]

Answer:

-4n

Step-by-step explanation:

8 0
3 years ago
The phrase "4 more than twice a number" becomes '2n + 4'.
andrew11 [14]
I mean, this isn't a question but its true?
3 0
3 years ago
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