3 years ago

Select the solutions to the following inequality: |x| < 7

Mathematics

1 answer:

Rasek [7]3 years ago

4 0

|x| < 7
means x < 7 and x > -7

answer is -7 < x < 7

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During a middle school basketball game, every spectator placed his or her ticket stub into one of several containers. After the

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The eight people to march in a sportsmanship parade.

Step-by-step explanation:

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2 years ago

A robot is expected to filter pollution out of at least 350 liters of air and water. It filters air at the rate of 50 liters per

s2008m [1.1K]

Answer:

$20W+50A\geq 350$

Step-by-step explanation:

we are given that A robot is expected to filter pollution out of at least 350 liters of air and water.

Also It filters air at the rate of 50 liters per minute, and it filters water at the rate of 20 liters per minute.

The inequality for number of minutes the robot should filter air (A) and water (W) to meet this expectations can be writte as follows:

$20W+50A\geq 350$

Hence the required inequality has been formulated.

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2 years ago

Read 2 more answers

Which of the following is the equation of a line perpendicular to the line Y=-1/3x+1, passing through the point (2,7)?

zimovet [89]

Y= 3X + 1. Perpendicular means you would change the slope by flipping it and changing the sign. So the slope then becomes 3. Then you use your points to find the y-intercept by filling in the variables. 7=3(2) + B. 7=6 + B. Then subtract 6 from both sides. B=1. Then you just put your problem back into slope intercept form with your new slope and y-intercept. Y=3x + 1.

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2 years ago

The function d(x)=1375-110 represents the distance a high speed train is from its destination after x hours. How long does the t

aalyn [17]

D(x)=1375-110x
when it reaches 0 it has reached destination
0=1375-110x
add 110x to both sides
110x=1375
divide both sides by 110
x=12.5
answer is 12.5 hour

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3 years ago

A water balloon is catapulted into the air so that it's height, in meters, after t seconds is h = -4.9t^ +27t +2.4

zysi [14]

$h = -4..9t^2+27t+2.4\ for\ t=3$

Just replace t with 3 and solve.

$h = -4.9*3^2 + 27*3 + 2.4 \\ h = -4.9*9 + 27*3 + 2.4 \\ h=-44.1 + 81 + 2.4 \\ \boxed{h=39.3}$

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3 years ago