Answer:
A.11
Step-by-step explanation:
sqrt(121)
What number times itself is 121
11*11 = 121
-11*-11 =121
We have two options 11 or -11
Given our choices
A.11
Seth travels with constant speed <span><span>v=<span>dt</span></span><span>v=<span>dt
</span></span></span><span> then </span><span><span>v=<span>157
1</span>=<span>x3600</span></span><span>v=<span>157.1</span>=<span>x3600</span></span></span><span>where </span><span>xx</span><span> is the distance traveled in 1 hour.
So his velocity would be x miles/hour.
By computing </span><span><span>x=<span><span>3600⋅1</span>57.1</span>=63.047</span><span>x=<span><span>3600⋅1</span>57.1</span>=63.047
</span></span><span> Seth travels at a speed of </span><span><span>63.047miles/hour</span></span>
2x - 3y = -24
x+ 6y = 18
you solve the first one by the x:
2x = -24 + 3y
x = (-24+3y)/2
then you substitute what you found in the other equation and you solve by y
(-24+3y)/2 + 6y = 18 multiply everything by 2
-24 + 3y + 12y = 36
3y + 12y = 36 + 24
15y = 60
y = 60/15
y = 4
Good job! You found your y! :D
Now let's substitute the y in the first equation with 4:
2x - 3(4) = -24
2x - 12 = -24
2x = -24 + 12
2x = -12
x = -12/2
x= -6
Done!! ;) <span />
Answer:
A
Step-by-step explanation:
We are given:
Since cosine is the ratio of the adjacent side over the hypotenuse, this means that the opposite side is (we can ignore negatives for now):
So, the opposite side is 5, the adjacent side is 12, and the hypotenuse is 13.
And since θ is in QIII, sine/cosecant is negative, cosine/secant is negative, and tangent/cotangent is positive.
Cosecant is given by the hypotenuse over the opposite side. Thus:
Since θ is in QIII, cosecant must be negative:
Our answer is A.