Answer:
A.
If this helped please make this brainliest please thank you!
The correct answers would be both A and C
Answer:
1a) Length = 7x + 3 & Width = 4x - 2
1b) Area = ![28x^2 -2x -6](https://tex.z-dn.net/?f=28x%5E2%20-2x%20-6)
1c) Area = 2774 sq. m
2. ![(x-4)(y+7)](https://tex.z-dn.net/?f=%28x-4%29%28y%2B7%29)
Step-by-step explanation:
1a)
The length given as words is "3 more than 7 times x"
The width given as words is "4 times x minus 2"
The expression for length would be 7x + 3
The expression for width would be 4x - 2
1b)
The area is length * width
Since we already know the algebraic expressions for length and width from part (a) above, we use the formula:
Area = (7x+3)(4x-2) = 28x^2 -14x + 12x - 6 = 28x^2 -2x -6
Area = ![28x^2 -2x -6](https://tex.z-dn.net/?f=28x%5E2%20-2x%20-6)
1c)
Given x = 10, we put this into the area expression we found in (b) above.Let's see:
![28x^2 -2x -6\\=28(10)^2 -2(10) -6\\=2774](https://tex.z-dn.net/?f=28x%5E2%20-2x%20-6%5C%5C%3D28%2810%29%5E2%20-2%2810%29%20-6%5C%5C%3D2774)
Area = 2774 sq. m
2.
We can group the first two terms and next two terms and write up:
![xy-4y+7x-28\\(xy-4y)+(7x-28)\\y(x-4)+7(x-4)\\(x-4)(y+7)](https://tex.z-dn.net/?f=xy-4y%2B7x-28%5C%5C%28xy-4y%29%2B%287x-28%29%5C%5Cy%28x-4%29%2B7%28x-4%29%5C%5C%28x-4%29%28y%2B7%29)
That's the factored form.
Answer:
Step-by-step explanation:
m≥150
draw a solid dot (since it is greater than or equal to) starting at 150 and continue to the end of the number line.
Answer:
1- y= -1.25x+15.5 because you can estimate the y intercept to see that it intercepts at 15.5 and you find the slope by calculating it with the points 2,15 and 6,10.
2- it decreased approximately 1 and a half minutes a day because the slope is -1.25, or one and a half minutes lost
Step-by-step explanation:
6-2/10-15=-1.25