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2 years ago

State which equation form a direct variation

Mathematics

1 answer:

Strike441 [17]2 years ago

8 0

c is the answer i know this because im smart and because c is the answer

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Helena wants to paint a box in the shape of a cube with sides that are 18 inches long. what is the surface area that Helena will

yan [13]

Answer:

1944 Inches Squared

Step-by-step explanation:

Surface area Formula for a Cube:

$A = 6a^2$

The "edge", which is also the side, is 18 inches.

$a = 18$

Solve the formula.

$A= 6a^2 = 6(18)^2 = 6 * 18^2\\18^2 = 324\\324 * 6 = 1944\\A=1944$

The cube's surface area should be 1944 square inches.

5 0

2 years ago

Blue Cab operates 15% of the taxis in a certain city, and Green Cab operates the other 85%. After a nighttime hit-and-run accide

NikAS [45]

Answer: The required probability is 0.414.

Step-by-step explanation:

Since we have given that

Probability of taxis in a certain city by Blue Cab P(B)= 15%

Probability of taxis by Green Cab P(G) = 85%

Let A be the event that eyewitness said that vehicle was blue.

P(A|B)=0.80

P(A|G)=0.80

P(A'|B)=0.20=P(A'|G)

Using the "Bayes theorem":

Probability that the taxi at fault was blue is given by

$=\dfrac{P(B).P(A|B)}{P(B).P(A|B)+P(G).P(A'|G)}\\\\=\dfrac{0.15\times 0.8}{0.15\times 0.8+0.85\times 0.2}\\\\=\dfrac{0.12}{0.12+0.17}\\\\=\dfrac{0.12}{0.29}\\\\=0.414$

Hence, the required probability is 0.414.

8 0

2 years ago

Elaina has to congruent rugs at her house she cut one vertically down the middle and she cut diagonally though the other one aft

Kitty [74]

Answer:

All of the rugs are the same size after making the cuts. The vertical line goes down the center of the rectangle, making two congruent parts. The diagonal line also splits the rectangle into two congruent parts because the area of a right triangle is exactly half the area of the rectangle.

Step-by-step explanation:

7 0

1 year ago

Using the drawing, if the measure of angle 2 is 42 and the measure of angle 3 is 52, what is the measure of angle 6

AleksandrR [38]

(2x10) +22=42

(3x10) +22=52

(6x10) +22=82

Step-by-step explanation:

3 0

3 years ago

What are the coordinates of point of intersection of y=x+3 and y=3x-3?

Aliun [14]

Answer:

Correct option is

(0, 0)

Form the graph, we can see that solution is (0,0).

The point of intersection of lines y = 3x and x = 3y must satisfies both the equation.

From the options (0,0) satisfies both the equations, hence the point of intersection of given lines is at origin i.e. (0,0).

7 0

2 years ago

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