All categories

3 years ago

If the re-expressed regression line is ln y = 8.7 + 0.23x, what is the value of y when x is 12?

Mathematics

1 answer:

Sauron [17]3 years ago

6 0

Answer:

y=11.46

Step-by-step explanation:

$y = 8.7 + 0.23x \\ y = 8.7 + 0.23(12)$

$y = 8.7 + 0.23 \times 12 \\ y = 8.7 + 2.76$

$y = 11.46$

$to \: multiply \: 0.23 \times 12 \\ you \: convert \: the \: decimal$

$= 23 \ \times 12 \div 100 \\ = 276 \div 100$

$= 2.76$

hope I helped

mark as brainliest answer

You might be interested in

Which expression is equivalent to 6 x 2/3?<br>a. 3 x 1/3<br>b. 4 x 1/3<br>c. 8 x 1/3<br>d. 12 x 1/3

sesenic [268]

D. 12 x 1/3

You just had to multiply 6 x 2/3 which gives you 4.

Then, multiply all of your answer choices and see which one also gives you 4. D is the only one.

6 0

4 years ago

The approximate distance of the moon from Earth is 4 x 105 km and the average approximate distance from the Earth to Venus is 4

Otrada [13]

Wouldn’t it be 8 km farther bc earth to Venus is 420 km and earth to moon is 428 km. 428-420= 8

7 0

4 years ago

Picture included-11 points-second time

Lisa [10]

Answer:

b = 12

Step-by-step explanation:

c^2 = a^2 + b^2

Solving for b,

b^2 = c^2 - a^2

= (13)^2 - (5)^2

= 169 - 25

= 144

b = 12

4 0

3 years ago

Find the solutions please help me

weeeeeb [17]

The first one is:
y = 5-7=-2
(5, -2)

second one:
4 = x + 3
x =4-3=1
(1,4)

6 0

3 years ago

Many residents of suburban neighborhoods own more than one car but consider one of their cars to be the main family vehicle. The

horrorfan [7]

Answer:

95.4% of family vehicles is between 1 and 3 years old.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 2

Standard Deviation, σ = 6 months = 0.5 year

We are given that the distribution of age of cars is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(family vehicles is between 1 and 3 years old)

$P(1 \leq x \leq 3)\\\\ = P(\displaystyle\frac{1 - 2}{0.5} \leq z \leq \displaystyle\frac{3-2}{0.5}) = P(-2 \leq z \leq 2)\\\\= P(z \leq 2) - P(z < -2)\\= 0.977 -0.023 = 0.954= 95.4\%$

$P(1 \leq x \leq 3) = 95.4%$

95.4% of family vehicles is between 1 and 3 years old.

3 0

3 years ago