In this scenario, we are solving the inequality.
What this means is that we would need to get x on one side in order to figure out what x is.
Solve:
5x + 2 > 7x - 1
Subtract 7x from both sides
-2x + 2 > -1
Subtract 2 on both sides
-2x > -3
Divide both sides by -2. Flip the inequality since you're dividing by a negative
x < 3/2
In interval notation it would be:
( -∞ , 3/2) or ( -∞ , 1.5)
Answer:
x = 1.5
Step-by-step explanation:
5x + 2 > 7x - 1
5x -7x = -1 -2 (move the terms to the same side, but change the sign on the term being transferred)
-2x = -3 (divide by -2 on both sides)
x = 1.5
Given the dimensions of the brick, we first calculated its volume in cubic meters. Then we calculated the volume of the wall in cubic meters. Dividing the volume of the wall by the volume of a single brick, we find that we need 20,000 bricks to build the wall.
This is a problem in Mathematics, specifically involving volume and unit conversion. The volume of the brick can be calculated using the formula for the volume of a rectangular prism, Volume = length x width x height. The dimensions given for the brick are in centimeters and the wall dimensions are given in meters. Therefore, we must convert the brick dimensions to meters: 30 cm = 0.3 m, 10 cm = 0.1 m and 7.5 cm = 0.075 m. The volume of one brick is 0.3 m * 0.1 m * 0.075 m = 0.00225 cubic meters.
The volume of the wall is also given by the formula length x width x height, so it is 30 m * 2 m * 0.75 m = 45 cubic meters. To find the number of bricks required to fill this volume, divide the volume of the wall by the volume of a single brick, 45 m³ / 0.00225 m³ = 20000 bricks. Thus, it will take 20,000 bricks to build the wall.
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Answer:
the answer is 45
Step-by-step explanation:
all you have to do is multiply 30*2*3/4
to get 45
Answer:
could you give what the problem is
Step-by-step explanation: