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alexandr402 [8]
3 years ago
14

To eliminate the terms and solve for y in the tewest steps, by which constants should the equations be multiplied by before

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
6 0

Answer:

the equation is not shown...

Step-by-step explanation:

but to solve for y you should use the first equation that is use the coefficient of x in the first equation to multiply all the terms in the second equation.

And use the coeffient of x in the second equation to multiply the the terms in the first equation.

It would have been better if the equation was shown for better explanation.

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At the bank, Mr Smith changes a £5 note for 20p pieces.<br> How many 20p pieces does he-get?
Sindrei [870]

Answer:

erm

Step-by-step explanation:

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4 0
2 years ago
A study was done that looked at how much red meat people consumed and how long they lived. The correlation r was found to be 0.9
AVprozaik [17]

Answer:

False

Step-by-step explanation:

Since the correlation r was found to be 0.98 (a value closer to 1).  

Let X =how much red meat people consumed

let Y = how long they lived.

where the x-values are the values of the deviations of co-ordinates X from Xₙ, their mean value and the y-values are the values of the deviations of co-ordinates Y from Yₙ, their mean value.

That is, x=(X−Xₙ) and y=(Y−Yₙ).

The results of this determination give values of r lying between +1 and −1, where;

+1 indicates perfect direct  correlation,

−1 indicates perfect inverse correlation and

0 indicates that no correlation exists.

Between these values, the smaller the value of r, the less is the amount of correlation which exists.

Generally, values of r in the ranges 0.7 to 1 and −0.7 to −1 show that a fair amount of correlation exists.

therefore, it can be seen that there is a perfect relationship between the quantity eaten and how long the person live

But, the correlation does not consider those that does not consume meat, and it is very hard to determined the answer to the question.

the answer is false because there are other reasons that determined longevity of life apart from meat consumption.

3 0
3 years ago
Sarah uses 9.9 pints of blue paint and white paint to paint her bedroom walls. 3/5
saul85 [17]

Answer: 3.96 pints

Step-by-step explanation: if 3/5 is blue, then 2/5 has to be white (since 3/5 + 2/5 = 1). Multiply 9.9 by 2/5 to get 3.96 pints

8 0
2 years ago
How do you find the perimeter of shaded regions?
xxTIMURxx [149]

Answer:

Perimetre of the rencatngel Perimetre of the circle and substrac the.

6 0
2 years ago
Can you plz help me with 2 &amp; 4
alexgriva [62]
The first question is yes are parallel and the second one is no thy are not parallel
3 0
3 years ago
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