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3 years ago

13

Over summer, Jackie played video games 3 hours per day. When school begin in the fall, she was only allowed to play video games

for half an hour per day. What is the percent decrease? Round to the nearest percent

1 answer:

lesya [120]3 years ago

6 0

30. minutes off the game

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G let z be a random variable with a standard normal distribution. find the indicated probability. p(z ≤ −0.27)

lisov135 [29]

Bfed.ksjacNsjaebf hhvnh.kjzbdf.kjz

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3 years ago

In J, K is the midpoint. The coordinates of ) are (2, 2), and the coordinates of Kare (10, 11). What are the coordinates of L?

DiKsa [7]

Answer:

L(18, 20)

Step-by-step explanation:

In JL, K is the midpoint. The coordinates of J are (2, 2), and the

coordinates of K are (10, 11). What are the coordinates of L?

Solution:

If O(x, y) is the midpoint between two points A( $x_1,y_1$ ) and B( $x_2,y_2$ ). The equation to determine the location of O is given by:

$x=\frac{x_1+x_2}{2} \\\\y=\frac{y_1+y_2}{2}$

Since JL is a line segment and K is the midpoint. Given the location of J as (2, 2) and K as (10, 11). Let ( $x_2,y_2$ ) be the coordinate of L. Therefore:

$10=\frac{2+x_2}{2} \\\\20=2+x_2\\\\x_2=18$

$11=\frac{2+y_2}{2} \\\\22=2+y_2\\\\y_2=20$

Therefore L = (18, 20)

4 0

3 years ago

1. 3x + 12 = 8x - 18

Ray Of Light [21]

Answer:

given
addition property of equality
addition property of equality
division property of equality
symmetric property of equality

Step-by-step explanation:

In step 2, -3x was added to both sides in accordance with the addition property of equality.

The same property lets you add 18 to both sides, as in step 3.

The division property of equality lets you divide both sides of the equation by 5. (Or, the multiplication property lets you multiply by 1/5.)

Swapping sides of the equal sign is allowed by the symmetric property of equality.

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3 years ago

At one time the aircraft is 150 m above the surface, the submarine is 25 m below the surface, and the underwater robotic vehicle

EastWind [94]

Answer:

$175$ meter is difference in height between the submarine and the aircraft

Step-by-step explanation:

The height of aircraft above the surface $= 150$ meter

Depth at which the submarine lies below the surface $= 25$ meter

Depth at which the underwater robotic vehicle below the surface $= 186$ meter

Difference in height between the submarine and aircraft is equal to

$25 +150 = 175$ meter

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3 years ago

For what values of a and m does f(x) have a horizontal asymptote at y = 2 and a vertical asymptote at x = 1? f(x)=2x^m/x+a {a =

iVinArrow [24]

Answer:

See below

Step-by-step explanation:

$f(x)=\frac{2x^{m} }{x+a}$

$f(x)=\frac{2x^{1} }{x-1}$

If x=1, then 1-1=0, which implies a vertical asymptote at x=1 since dividing by 0 is undefined.

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3 years ago