Answer:
i think about 4.1 miles
Step-by-step explanation:
Bh + hr = 25
you can factor out an h from the left side of your equation:
h(b + r) = 25 ... divide both sides by h
b + r = (25/h) ... subtract r
b = (25/h) - r
The lowest grade he could earn is 120% of the grade at the end of the semester.
The following statement is given:
I have 90% after about 75% of the semester.
We are asked to find the lowest grade by the end of this semester.
<h3>What is Percentage?</h3>
A percentage is a number expressed as a fraction of 100.
- 50% = 50/100 = 1/2
- 25% = 25/100 = 1/4
- 20% = 20/100 = 1/5.
We can write this statement "I have a 90% grade after about 75% of the semester" as:
90% grade = 75% semester.............(1)
By the end of the semester means at 100% semester.
Multiplying equation (1) by 100/ 75 on both sides of the equation.
We get,
(100/75) x 90% grade = (100/75) x 75% semester
(100 x 90)/75 % grade = 100% semester
120% grade = 100%
Thus the lowest grade he could earn is 120% of the grade at the end of the semester.
Learn more about Percentages here:
brainly.com/question/24159063
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Answer:
a = 6 is the desired value.
Step-by-step explanation:
Let two points be A and B , where A = (2,-2) and B = (-6,2)
Now, slope of the line AB 
or, 
So, the slope m = -(1/2)
Now the general form of the equation is given by
y - y0 = m (x-x0) : where (x0, y0) is any point on the line of the equation.
So, here let (x0,y0) = (2, -2) and m = -1/2
The equation becomes : y -(-2) = (-1/2)(x-2)
or, x + 2y = -2 ia the formed equation.
Now here substiture thepoint (a, -4)
we get: a + 2(-4) = -2
or, a = -2 + 8 = 6
or a = 6 is the desired value.