1) first step
in first place you must to Know how many feets are in a mile, it is given at the exercise ( 5280 feet = 1 mile)
now Winston's wi-fi has a range of 1 1/2 miles, it is necessary to transform to mile, then 1 + 1/2 = 3/2
establish the following relation 1 mile ____ 5280 feet
3/2 mile _____ x feet
x = 3/2mile ×5280 feet/ 1 mile = 7920 miles this is the range of the Winston 's wi-fi
2 ) second step
in order to know the relation of proportion you must divide the largest amount between the lowest
7960/ 3920 = 2
3960/ 7960 = 1 / 2⇒ 2×3960 = 1×7960, it means that the signals have the relation of 1 : 2, then the value of the range of Winston's signal <em>is twice ( 2) </em>the value of the range of isaac's signal, therefore the value of ratio is 2
Answer:
y= -3x + 10
Step-by-step explanation:
we can answer this question thanks to this formula:
y-y1 = m(x-x1) where y1 and x1 indicate the coordinates of the given point and m indicates the slope
y-4 = -3(x-2)
y = -3x+6+4
y= -3x + 10
The point-slope form of the equation of a line with slope m through point (h, k) is
... y - k = m(x - h)
Substituting your given values of m=2 and (h, k)=(3, 9) gives you
... C. y - 9 = 2(x - 3)
Make a proportion using the ratio (A:B) given and number of As and Bs really gotten in the class (
)
Cross multiply
2 * 40 = 5 * A
80 = 5A
Isolate A by dividing 5 to both sides
80/5 = 5A/5
16 = A
If 40 people in the class got B's then 16 people got A's
Hope this helped!
~Just a girl in love with Shawn Mendes
