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patriot [66]
3 years ago
10

Solve 6x - 4y = 5 and 9x - 6y = 12 by substitution method

Mathematics
1 answer:
bogdanovich [222]3 years ago
5 0

Answer:

solve  6x - 4y = 5

Step-by-step explanation:

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"Data from the World Health Organization in 2013 were used to predict the life expectancy of men in a country from the life expe
marshall27 [118]

Answer:

The predicted life expectancy of men in a country in which the life expectancy of women is 70 years is 65.33 years.

Step-by-step explanation:

The least square regression line is used to predict the value of the dependent variable from an independent variable.

The general form of a least square regression line is:

\hat y=\alpha +\beta x

Here,

<em>y</em> = dependent variable

<em>x</em> = independent variable

<em>α</em> = intercept

<em>β</em> = slope

The regression line to predict the life expectancy of men in a country from the life expectancy of women in that country is:

\hat y=3.73 +0.88 x

Compute the life expectancy of men in a country in which the life expectancy of women is 70 years as follows:

\hat y=3.73 +0.88 x

  =3.73 +(0.88\times 70)\\=3.73+61.6\\=65.33

Thus, the predicted life expectancy of men in a country in which the life expectancy of women is 70 years is 65.33 years.

6 0
3 years ago
A number y multiplied by −3 is less than −2/5. Write this word sentence as an inequality.
bazaltina [42]
The answer is -3y < -2/5
8 0
3 years ago
The linear inequality
Nataly [62]
Line with negative slope the equation in form y = -ax + b  ; a > 0 B and D
choose one point in shaded area such as (2,0)check the value ... B is correct ... the answer
7 0
3 years ago
Which graph below has an EULER CIRCUIT?<br><br> A<br><br> B<br><br> C<br><br> D
PSYCHO15rus [73]

Answer:

D

Step-by-step explanation:

Trust me I have big brain

6 0
3 years ago
For how many movies is the cost of the plans the same?
sesenic [268]

Answer:

For 36 movies the cost of both the plans is same.

Step-by-step explanation:

Let us assume foe m movies, both the plans cost same.

Now, PLAN A:

Annual Fee = $45

Cost per movie  =  $2.50

⇒The cost of watching m movies  = m x (Cost of 1 movie)

= m x ($2.50) = 2.5  m

So, the total cost of Plan  A  = Annual Fee + Cost of m moves

                                                 = 45 + 2.50 m

PLAN B:

Cost per movie  =  $3.75

⇒The cost of watching m movies  = m x (Cost of 1 movie)

= m x ($3.75) = 3.75  m

ACCORDING TO QUESTION:

for m movies,  Cost of plan A = Cost of plan B

⇒45 + 2.50 m  = 3.75  m

or, 3.75 m  - 2.5 m = 45

or, m  = 45/1.25 = 36

or, m  = 36

Hence, for 36 movies the  cost of  both the plans is same.

5 0
3 years ago
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