10. Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 3 liters of natural oil for every 4

Which expression has a coefficient of 2? ( see picture )

Natalka [10]

Answer:

B

Step-by-step explanation:

The coefficient is the # before the variable.

For example the 4 in 4x^5.

6 0

3 years ago

Read 2 more answers

Suppose medical records indicate that the length of newborn babies (in inches) is normally distributed with a mean of 20 and a s

andreyandreev [35.5K]

Step-by-step answer:

The normal probability curve is symmetrical about the mean.

This means that for an event that is normally distributed, there is a 50% probability that it falls below the mean, and a 50% probability that it falls above.

From the given information, the mean is 20" and we need the probability that a given infant is longer than 20", namely the mean.

Therefore by the definition of the normal probability curve, there is a 50% probability that the length falls above 20".

This can be verified by referencing a normal probability table with Z=0, meaning at the mean, the probability is equal to 0.5 for Z<0, and therefore 0.5 for Z>0.

Z=(X-mean) / Standard deviation

When Z>0, X (measurement) is greater than the mean

When Z<0, X is less than the mean.

8 0

3 years ago

Quizzzz !! Plzzzz help

Tomtit [17]

QUESTION 1

a) The zeros of the function are the x-values at which the graph touches the x-axis.

From the graph, the zeros are;

$x=0,x=-4$

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=-2$

c) The maximum value is the y-value of the vertex.

Max: y=4

d) The vertex is the maximum point on the graph.

Vertex: (-2,4).

QUESTION 2

a) The graph touches the x-axis at only one point.

From the graph, the zero is $x=-2$

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=-2$

c) The minimum value is the y-value of the vertex.

Min: y=0

d) The vertex is the minimum point on the graph.

Vertex: (-2,0).

QUESTION 3

a) The graph touches the x-axis at two points.

From the graph, the zeros are $x=-3,x=3$

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=0$

c) The minimum value is the y-value of the vertex.

Min: y=-9

d) The vertex is the minimum point on the graph.

Vertex: (0,-9).

QUESTION 4

a) The zeros of the function are the x-values at which the graph touches the x-axis.

From the graph, the zeros are;

$x=-3,x=-5$

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=-4$

c) The maximum value is the y-value of the vertex.

Max: y=1

d) The vertex is the maximum point on the graph.

Vertex: (-4,1).

QUESTION 5

a) The graph touches the x-axis at two points.

From the graph, the zeros are $x=3,x=7$

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=5$

c) The minimum value is the y-value of the vertex.

Min: y=-4

d) The vertex is the minimum point on the graph.

Vertex: (5,-4).

QUESTION 6

a) The graph does not touch the x-axis.

The function has no real zeros.

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=2$

c) The minimum value is the y-value of the vertex.

Min: y=5

d) The vertex is the minimum point on the graph.

Vertex: (2,5).

QUESTION 7

a) The graph touches the x-axis two points.

The function has zeros at x=1 and x=5

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=3$

c) The minimum value is the y-value of the vertex.

Min: y=-4

d) The vertex is the minimum point on the graph.

Vertex: (3,-4).

QUESTION 8

a) The zeros of the function are the x-values at which the graph touches the x-axis.

From the graph, the zeros are;

$x=0,x=-2$

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=-1$

c) The maximum value is the y-value of the vertex.

Max: y=1

d) The vertex is the maximum point on the graph.

Vertex: (-1,1).

QUESTION 9

a) The graph touches the x-axis at only one point.

From the graph, the zero is $x=5$

b) The axis of symmetry is the vertical line that goes through the vertex of the parabola.

$x=5$

c) The minimum value is the y-value of the vertex.

Min: y=0

d) The vertex is the minimum point on the graph.

Vertex: (5,0).

5 0

4 years ago

One of the tallest living men has a height of 236 cm. One of the tallest living women is 224 cm tall. Heights of men have a mean

Roman55 [17]

Answer:

A. The woman is relatively taller because the z score for her height is greater than the z score for the man's height.

Step-by-step explanation:

Whoever has the highest z-score, is taller relative to the population of the same gender.

The z-score of a value X in a set with mean $\mu$ and standard deviation $/sigma$ is given by:

$Z = \frac{X - \mu}{\sigma}$

Solution:

Heights of men have a mean of 170 cm and a standard deviation of 6 cm. One of the tallest living men has a height of 236 cm. So the z-score of his height is:

$Z = \frac{X - \mu}{\sigma} = \frac{236-170}{6} = 11$

Heights of women have a mean of 161 cm and a standard deviation of 5 cm.

One of the tallest living women is 224 cm tall. The z-score of the women's height is

$Z = \frac{X - \mu}{\sigma} = \frac{224-161}{5} = 12.6$

The women has a higher z-score, so she is relatively taller.

The correct answer is A

3 0

4 years ago

Which inequality represents that 18 less than twice a number more than 35?

Len [333]

Answer:

B. 2n - 17 < 35

Hope it helps you:)

3 0

3 years ago