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Contact [7]
3 years ago
10

Is anyone good at elimination method? I will give 10 points to the person that answer the question. :)

Mathematics
2 answers:
Licemer1 [7]3 years ago
8 0
To eliminate x, the coefficients of x's in both equations should be opposite numbers. Since the coefficient of x in the second equation is 3, the coefficient in the first equation should be -3. So she should multiply the first equation by -3.
Anna [14]3 years ago
8 0
-3! 
-3y=-3x-24
y=3x-11
-2y=-35
y=17.5
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I need help with this
34kurt

Answer:

4/5 to 80%

7/20 to 35%

9/4 to 225%

25/1000 to 2.5%

Step-by-step explanation:

3 0
3 years ago
there are 325 students each class is limited to at most 30 students. how many classes need to be offered?
podryga [215]

11 as the 25 need a class for it u can't leave 25 people 325÷30

3 0
3 years ago
A potato chip company produces a large number of potato chip bags each day and wants to investigate whether a new packaging mach
alexandr1967 [171]

Answer:

The conditions for the approximation have been met

Step-by-step explanation:

Random samples on both cases  and

p∧o proportion of bags packaged on the old machine that are damaged

p∧n sample proportion of bags packaged on the new machine that are damaged

p∧c  =  ( p∧o + p∧n ) / (nO + nN )  

p∧o = 15 %      p∧o =  0,15         nO = 150

p∧o *  nO = 0,15 *150          p∧o *  nO = 22,5

p∧n  = 8 %      p∧n  = 0,08     nN = 200

p∧n*nN  = 0,08 * 200     p∧n*nN  = 16

Both  p∧n*nN  and   p∧o *  nO    are bigger than 5

Therefore both samples are big enough for the approximation of the binomial distribution to normal distribution

4 0
3 years ago
I need help please I am not good at math I'm going to read it ​
Jlenok [28]
405
x 36
14,580
Can I get brainly? :)

3 0
2 years ago
Read 2 more answers
Toya can run one lap of the track in 1 min. 3 sec., which is 90% of her younger sister niki's time. what is niki's time for one
Alex
Hello!

1 minute 3 seconds = 63 seconds

We must found out 63 is 90% of what number, using the percentage formula:

90 * 100 / 63 = 70

70 seconds = 1 minute 10 seconds

So, Niki's time for one lap is 1 minute 10 seconds (70 seconds).
5 0
3 years ago
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