Answer:
![b=\frac{1}{4}or0.25](https://tex.z-dn.net/?f=b%3D%5Cfrac%7B1%7D%7B4%7Dor0.25)
Step-by-step explanation:
The trick here is to multiply 3/2 by 2/2 to make the base 4, and then subtract.
![\frac{3}{2} +b=\frac{7}{4} \\\frac{2}{2} *\frac{3}{2} +b=\frac{7}{4} \\\frac{6}{4} +b=\frac{7}{4}\\ b=\frac{7}{4} -\frac{6}{4}\\ b=\frac{7-6}{4}\\ b=\frac{1}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B2%7D%20%2Bb%3D%5Cfrac%7B7%7D%7B4%7D%20%5C%5C%5Cfrac%7B2%7D%7B2%7D%20%2A%5Cfrac%7B3%7D%7B2%7D%20%2Bb%3D%5Cfrac%7B7%7D%7B4%7D%20%5C%5C%5Cfrac%7B6%7D%7B4%7D%20%2Bb%3D%5Cfrac%7B7%7D%7B4%7D%5C%5C%20b%3D%5Cfrac%7B7%7D%7B4%7D%20-%5Cfrac%7B6%7D%7B4%7D%5C%5C%20b%3D%5Cfrac%7B7-6%7D%7B4%7D%5C%5C%20b%3D%5Cfrac%7B1%7D%7B4%7D)
And that is our answer!
Answer:
Step-by-step explanation:
(2x^2-x)+(x^2+3x-1)
2x^2-x+x^2+3x-1
x^2+3x-1
5x^2+2x-1+(4x^2-x+2)
5x^2+2x-1+4x^2+x-2
9x^2+6x-3
(3x^2+2x+1)+(x^2-1)
3x^2+2x+1+x^2-1
4x^2+2x
-x^2-1+(4x^2-x)
-x^2-1+4x^2-x
3x^2-1-x
Answer:
The answer is B
Because the train will stop and speed decreases with increasing time
Answer:
y=-7x-9
Step-by-step explanation:
y=mx+b(where m is slope and b is y intercept)
y=-7x+b
plugging the number in we get
12=-7(-3)+b
12=21+b
b=-9
so y= -7x-9
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