Answer:
4x^2+6x-20=0
Step-by-step explanation:
1320 ft out of a mile. 5280 feet in a mile so
1320/5280
keep simplifying until you get to 1/4
Answer:
y = 3x-15 and y = x-7
Step-by-step explanation:
We are asked to write a system of equations with the solution (4,-3)
It is sufficient if we find two lines passing through this point.
Let us take first line as with slope 3.
Then the equation would be of the form
y-y1 = m(x-x1)
y+3 = 3(x-4)
Or y = 3x-15 is one line
Let second line have slope 1
y+3 = 1(x-4)
y = x-7
Now we have two systems of equations as
y = 3x-15 and y = x-7
Since pi is equivalent to 3.14 and means 180°, therefore 1.75 which
is about half of pi should be at almost 90°. The cos of a 90° angle which is located on
the y axis should be zero, therefore cos 1.75 must be near zero. However in
this case it is near one, clearly his calculator is in degree mode that is why
he got an erroneous answer.
What Sam
can do to get the correct answer would be to convert his calculator into radian
mode or convert the given 1.75 rad into degrees:
θ = 1.75
rad (180° / π rad)
θ =
100.2676
<span>cos 100.2676
= -0.1782 which is now correct since it
is nearer to zero</span>
Answer:
-14
Step-by-step explanation:
point AB = -23-5 /2 = -14
