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9966 [12]
2 years ago
13

The key to using the elimination method is to find variable terms in the two equations that have unequal coefficients.

Mathematics
2 answers:
Colt1911 [192]2 years ago
6 0
A.true



Jdjdididjdndjdhudiss
boyakko [2]2 years ago
4 0
Answer: B) False

Detailed Explanation:

We need to find the variables having equal coefficients or make the coefficients of some variable equal because we will be able to eliminate a variable. For eg. take the following pair of linear equations.

=> x + y = 14 (Eq. 1)
=> x - y = 4 (Eq. 2)

As we see, the coefficients of x and y are same but in y, the coefficients are +1 and -1 which can be easily cancelled while adding the equations. This will eliminate the variable y. So, we can find the value of x and then substitute it in any equation to find the value of y.
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100 points!!What is the equation of the line with points represented in the table? What can yoy conclude about the line represen
Zina [86]
Answer:

-4/3

This is really easy lol
3 0
2 years ago
Construct the 99% confidence interval estimate of the population proportion p if the sample size is n=900 and the number of succ
oee [108]

Answer:

An 99% confidence interval  of the given proportion

(0.355 , 0.385)

Step-by-step explanation:

Given sample size n= 900

the number of successes in the sample is x=333

The proportion P = \frac{x}{n} = \frac{333}{900} = 0.37

            Q = 1-P =1 - 0.37 = 0.63

<u>Confidence interval</u>:-

99% of confidence interval zα = 2.93

(P - z_{\alpha } \sqrt{\frac{PQ}{n} }  , P + z_{\alpha } \sqrt{\frac{PQ}{n} })

(0.37 - 2.93 \sqrt{\frac{0.37(0.63}{900} }  ,0.37 +2.93 \sqrt{\frac{0.37(0.63}{900} } })

(0.37 - 0.015 , 0.37 + 0.015)

(0.355 , 0.385)

<u>Conclusion</u>:-

<u>An 99% Confidence interval (0.355 , 0.385)</u>

7 0
3 years ago
Hi friends,
Mkey [24]

Answer : 19.6cm

I hope this helps you! Have a good day!

6 0
2 years ago
Subtract-3x - 8 from 4x² - 7x - 2.
allsm [11]

( {4x}^{2}  - 7x - 2) - (3x - 8) \\  \\  {4x}^{2}  - 7x - 2 - 3x + 8 \\  \\  {4x}^{2}  - 10x + 4.

3 0
1 year ago
What is the mode of this data set 55 78 43 39 78 61 75 50 43 78
Rom4ik [11]

Mode means MOST.  Which number is displayed the most?

39, 43, 43, 50, 55, 61, 75, <u>78, 78, 78</u>

Answer: 78

Note: I placed the data set into numerical order because it will help you to easily find the mode and also the median (middle number).

5 0
3 years ago
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