4x^2+23x+15=0
Δ=23^2-4*4*15=529-240=289
x1= (-23+17)/8=-6/8= -3/4
x2= (-23-17)/8=-5
4x^2+23x+15= 4(x+3/4)(x+5)=(4x+3)(x+5)
The scale of the map from inches to miles is 1 inch : 9 miles
<h3>How to determine the scale of the map from inches to miles?</h3>
The given parameters are:
- The actual distance of the cities apart = 36 miles
- The scale distance of the cities apart = 4 inches
The scale of the map from inches to miles is represented as:
Scale of map = The scale distance of the cities apart : The scale distance of the cities apart
Substitute the known values in the above equation
Scale of map = 4 inches : 36 miles
Divide both sides of the ratio by 4
So, we have:
Scale of map = 4/4 inches : 36/4 miles
Evaluate the quotient
Scale of map = 4/4 inches : 9 miles
Evaluate the quotient
Scale of map = 1 inch : 9 miles
Hence, the scale of the map from inches to miles is 1 inch : 9 miles
Read more about scale drawing at:
brainly.com/question/15891755
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Find the mean of each of these set of numbers <br>
a. 5,3,4,8 b. 7,5,6,5,7 c. 15,12,10,12,11
Svetllana [295]
The correct answers are
A) 5
B) 6
C) 12
2/3 of the journey = 6 miles
1 (whole journey ) = 6 / 2/3 = 6 * 3/2 = 9 miles answer
Answer: approx. 75 cents / muffin
Step-by-step explanation: divide 6.8 by 9
