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Lorico [155]
3 years ago
11

I dont understand the elimanation method can someone explain?

Mathematics
2 answers:
Lesechka [4]3 years ago
3 0
The best way I can explain the elimination method is, it's a method where you either add or subtract equations in order to get rid of a variable.
Igoryamba3 years ago
3 0
For elimination you would be canceling out your x or your y. When canceling out one of them you would then be solving for whatever variable is left over. Say you have your y left over and you solved it already, you will take whatever you got for your y and plug it into whichever equation is easiest to solve for x. Once you have both of your variables, y and x, that would be your coordinate.
HOPE THIS HELPS! ^_^
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I need help!!!! Can anyone answer as fast as they can???
Morgarella [4.7K]
X= 180
now you have to multiply all them with 180
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Define acute triangle. A. A triangle whose angles each measure less than 90o B. A triangle with one interior angle that measures
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3 years ago
the double number line shows that in 3 seconds an ostrich can run 63 meters. how far can the ostrich run in 5 seconds
inna [77]

Answer: 105 meters

Step-by-step explanation:

Ostrich's running rate is 63 meters/3 seconds. This can be reduced to 21 meters/second (21 m/s).

(21 m/s)*(5 sec) = 105 meters

5 0
2 years ago
Which expression represents each mathematical phrase?
olganol [36]

Answer:

Step-by-step explanation:

add 12 and a number: 12 + c

subtract a number from 12: 12 - c

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5 0
2 years ago
A survey of an urban university (population of 25,450) showed that 870 of 1,100 students sampled supported a fee increase to fun
Katen [24]

Answer:

95% confidence interval for the proportion of students supporting the fee increase is [0.767, 0.815]. Option C

Step-by-step explanation:

The confidence interval for a proportion is given as [p +/- margin of error (E)]

p is sample proportion = 870/1,100 = 0.791

n is sample size = 1,100

confidence level (C) = 95% = 0.95

significance level = 1 - C = 1 - 0.95 = 0.05 = 5%

critical value (z) at 5% significance level is 1.96.

E = z × sqrt[p(1-p) ÷ n] = 1.96 × sqrt[0.791(1-0.791) ÷ 1,100] = 1.96 × 0.0123 = 0.024

Lower limit of proportion = p - E = 0.791 - 0.024 = 0.767

Upper limit of proportion = p + E = 0.791 + 0.024 = 0.815

95% confidence interval for the proportion of students supporting the fee increase is between a lower limit of 0.767 and an upper limit of 0.815.

5 0
2 years ago
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