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3 years ago

WITH GRAPH

Mathematics

1 answer:

Alexus [3.1K]3 years ago

6 0

Answer:

(0, -2) (Answer B)

Step-by-step explanation:

Recall that the y-axis represents x = 0. The blue line crosses (intercepts) the y-axis when x = 0. The corresponding y-coordinate is -2. Thus, the y-intercept is (0, -2), or just -2.

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N is an odd number.

nikitadnepr [17]

Answer:

True:

Step-by-step explanation:

First, you should know that the square of any odd number is also odd.

The easiest way to go about this is to plug in an odd number for n. Lets use 3:

Plug 3 into A:

$3^{2} -1=9-1=8$

Plug 3 into B:

$3(3-1)=9-3 = 6$

Plug 3 into C:

$(3-2)^{2} = 2^{2} = 4$

Plug 3 into D:

$3^{2} +2 = 9+2=11$

Plug 3 into E:

$3(3-2) = 9-6 = 3$

Plug 3 into F:

$(3-2)^{2}=1^{2} =1$

3 0

2 years ago

The ratio of adults to children on a train in 7:2. There are 245 adults on the train. Find the total number of people on the tra

Kruka [31]

Answer:

315 people

Step-by-step explanation:

Using the given ratio, we can figure out the number of children on the train by doing cross multiplication.

Let x = # of children on train.

7/2 = 245/x

7x = 490

x = 70 children

The total number of people = 70 + 245 = 315 people total

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5 0

3 years ago

The accompanying table shows wind speed and the corresponding wind chill factor

kompoz [17]

Answer:he accompanying table shows wind speed and the corresponding wind chill factor

when the air temperature is 29°F. Write a logarithmic regression equation for this set

of data, rounding all coefficients to the nearest thousandth. Using this equation, find

he accompanying table shows wind speed and the corresponding wind chill factor

when the air temperature is 29°F. Write a logarithmic regression equation for this set

of data, rounding all coefficients to the nearest thousandth. Using this equation, find

Step-by-step explanation:

7 0

3 years ago

Y=5x-2 graphed is 1/3 a solution to the equation

ivolga24 [154]

Answer:

1/3 =5x-2

3(1/3)=3(5x-2)

1=15x-6

7=15x

x=7/15 (7/15 , 1/3)

Step-by-step explanation:

8 0

3 years ago

The petronas towers in Kuala Lumpur, Malaysia, are 452 meters tall. A woman who is 1.75 meters tall stands 120 meters from the b

bazaltina [42]

Answer:

$75.1^{\circ}$

Step-by-step explanation:

In this problem, we have:

H = 452 m is the height of the Petronas tower

h = 1.75 m is the height of the woman

d = 120 m is the distance between the woman and the base of the tower

First of all, we notice that we want to find the angle of elevation between the woman's hat the top of the tower; this means that we have consider the difference between the height of the tower and the height of the woman, so

$H' = H-h = 452-1.75=450.25 m$

Now we notice that $d$ and $H'$ are the two sides of a right triangle, in which the angle of elevation is $\theta$ . Therefore, we can write the following relationship:

$tan \theta = \frac{H'}{d}$

since

H' represents the side of the triangle opposite to $\theta$

d represents the side of the triangle adjacent to $\theta$

Solving the equation for $\theta$ , we find the angle of elevation:

$\theta = tan^{-1}(\frac{H'}{d})=tan^{-1}(\frac{450.25}{120})=75.1^{\circ}$

3 0

3 years ago