Answer:
-20 dawg
Step-by-step explanation:
hook it up w a brainliest for all my hard efforts
Answer:
Barbara's speed in clear weather is and in the thunderstorm is .
Step-by-step explanation:
Let be the speed and be the time Barbara drives in clear weather, and let be the speed and be the time she drives in the thunderstorm.
Barbara drives 22 mph lower in the thunderstorm than in the clear weather; therefore,
(1).
Also,
(2).
(3). ,
and
(4).
From equations (2) and (3) we get:
putting these in equation (4) we get:
and substituting for from equation (1) we get:
This equation can be rewritten as
which has solutions
We take the first solution because it gives a positive value for
.
Thus, Barbara's speed in clear weather is and in the thunderstorm is .
Answer:
V = 3078.76 in³
Step-by-step explanation:
To find the volume of a cylinder, use this formula:
V = πr²h
- V = volume
- r = radius
- h = height
Plug in the values you know.
V = π(7)²(20)
First let's evaluate the exponent.
7² = 49
V = π(49)(20)
Now let's multiply.
49 • π = 153.938
153.938 • 20 ≈ 3078.76
V = 3078.76 in³
This is your answer.
Hope this helps!
Y=13x+5 has: (0,5) (-2,-21)
Y=-3x has: (0,0) (-5,-15) (-3,9)
Y=x-10 has: (8,-2)
Explanation:
You can just substitute the points into the expression. (X,Y) this is the point so you would put the first number in the X slot and the second in the Y slot. If the X half equals the Y half of the equation that point fits in the equation.