Answer:
Step-by-step explanation:
4x - 2y = 5 -------------------------------(1)
y = 3x - 1 ----------------------------------(2)
Put Eq. (2) in (1)
4x - 2(3x-1) = 5
4x - 6x + 1 = 5
-2x + 1 = 5
Subtracting 1 to both sides
-2x = 5 - 1
-2x = 4
Dividing both sides by -2
x = 4 / -2
x = -2
Hope this helped!
Answer:
X = 7
Step-by-step explanation:
Please mark brainliest.
Answer:
6400 equals the area of the field.
Step-by-step explanation:
To find the area of a rectangle (the football field), you do A = bh, where b represents the base and h represents the height.
A = 120 * = 6400
This would be the answer.
There are 10.5 pounds of copper in a piece weighing 200 pounds.
We have,
The concept used to calculate the amount of copper in a piece weighing 200 pounds is the concept of percentage.
Now,
5.25 pounds of copper is to 100 pounds of alloy as x pounds of copper is to 200 pounds of alloy.
To determine the amount of copper in a piece weighing 200 pounds, we need to calculate 5.25% of 200 pounds.
To do this, we multiply 5.25% (or 0.0525) by 200:
0.0525 * 200 = 10.5
Therefore,
There are 10.5 pounds of copper in a piece weighing 200 pounds.
Learn more about percentages here:
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The 200-pound piece of alloy contains 10 and a 1/2 pounds of copper.
g = w + 2
w = g + 8
w = g − 2
w = 8g
w = g + 2
g = w + 8
g = w − 2