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Fynjy0 [20]
2 years ago
12

2y + 9 = 4 pls aswer the question pls pls​

Mathematics
1 answer:
Aleonysh [2.5K]2 years ago
3 0

Step-by-step explanation:

2y+9= 4

2y=-5

y=-5/2

y= -2and 1/2

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X+y=1<br> x+3y=9<br><br> Solve plzzzzzzzzzzzzzzzzzzzz
katovenus [111]

Answer:

x = - 3

y = 4

Step-by-step explanation:

x + y = 1 | (-3)

x + 3y = 9

- 3x - 3y = - 3

   x + 3y = 9

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- 3x + x = 9 - 3

- 2x = 6

2x = - 6

x = - 3

- 3 + y = 1

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y = 4

8 0
3 years ago
What are the square roots of 64144 ? −812 and 812 −49 and 49 −3272 and 3272 −412 and 412
worty [1.4K]

Answer:

-8/12 and 8/12

Step-by-step explanation:

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5 0
3 years ago
If an earthquake measures 10^4, what does it measure on the Richter scale?
devlian [24]
I think the answer is 4, the earthquake is a 4 in the scale.
6 0
3 years ago
Last year Billy weighed 75kg. This year he weighed 90kg. With what percentage did his weight increase. SHOW ALL WORK!!!
polet [3.4K]

well let's round. 90= 100, 75=80 that is how I face it. now 80 is 1/5 of 5/5= 100. so as a (%) we would sort it like:::: it is 80% out of +100 so he must have grown around 13%-16% due to him being 75kg in the past.

5 0
3 years ago
Aflati al 2013 lea termen al unei progresii aritmetice cu termenul al treilea egal cu 12 si diferenta a doi termeni consecutivi,
KATRIN_1 [288]

Răspuns:

8052

Explicație pas cu pas:

Al treilea termen al unei progresii aritmetice:

T (n) = a + (n - 1) d

Unde ;

a = primul termen; d = diferență comună = 4; n = al treilea termen (numărul termenului)

Al treilea (3) termen:

T (3) = a + (3-1) 4

T (3) = 12

12 = a + 2 (4)

12 = a + 8

12 - 8 = a

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Prin urmare, primul termen = a

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T (2013) = a + (2013-1) d

T (2013) = 4 + (2012) 4

T (2013) = 4 + 8048

= 8052

4 0
3 years ago
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