You are given
the distance of the horse of 45 miles at 15miles per hour and another 35 miles
at 10 miles per hour. You are asked the total time in hours of the cowboy
riding his horse. You have to get the time each mile the cowboy rode.
45 miles/15
miles per hour = 3 hours
35 miles/10
miles per hour = 3.5 hours
<span>3 hours + 3.5
hours = <u>6.5 hours</u>
</span>
<span>So the answer
is B. 6.5 hours.</span>
I believe the answer is 60, but I could be wrong
X +5 = -6x - 16
add 16 to both sides
x+21 = -6x
add 6x to both sides
7x+21=0
factor out the seven
7(x+3)=0
if 7 times (x+3) = 0 then (x+3) must equal zero because 7 times 0 is 0
so x+3=0
subtract three from both sides
x= -3
Answer:
log2(0.25) = -2
512 = 8^3
Step-by-step explanation:
- <em>Use of formula: </em><em>loga (b) = c ⇔ b = a^c</em>
Rewrite the following equation in logarithmic form.
0.25 = 2^-2
Rewrite the following equation in exponential form. log8 (512) = 3
Answer:
9
Step-by-step explanation:
Compare your x2 + y2=81 to the following:
x^2 + y^2 = 81
The " ^ " symbol indicates exponentiation.
Now compare x^2 + y^2 = 81 to
x^2 + y^2 = r^2.
This is the standard equation of a circle of radius r centered at the origin, (0,0). You can see for yourself that 81 must equal r^2.
Taking the square root of 81, we get plus or minus 9.
But the radius must be positive, so we reject the -9 and take +9.
The radius is 9.
