Answer:
Step-by-step explanation:
3. Area = pie r2
A = (22/7) (4)2
= 50.27
4. Circumference = pie d
C = (22/7) (13)
= 40.84
Answer:
Below in bold.
Step-by-step explanation:
Add the elevation change to the initial elevation:
Hike 2: Final elevation = -62 + 82 = 20.
Hike 3: Final elevation = 62 + -100 = -38.
Answer:
5 Graph. Place a for on the -2 on the Y axis. next count up 1 and right 1 and place a dot. Do the opposite going down and left. do this for however long you need.
6.
Y= -3x + 2
also not sure ;-;
7.
I think 2 and 4 but I'm not sure on this one ;-;
8.
Y = 16z (I believe)
8 days
9.
a. 2
b. 15 gallons
c. 7.5 hours
I tried my best. Hopefully this helps you :)
Answer: x = {-3, -1, 1, 7}
<u>Step-by-step explanation:</u>
f(x) = x⁴ - 4x³ - 22x² + 4x + 21
possible roots are: +/- 1, 3, 7, 21
Let's try x = 1
1 | 1 -4 -22 4 21
<u>| ↓ 1 -3 -25 -21 </u>
1 -3 -25 -21 0 <em>remainder is 0 so (x - 1) is a factor</em>
(x - 1)(x³ - 3x² - 25x - 21)
Next, let's try x = -1
-1 | 1 -3 -25 -21
<u>| ↓ -1 4 21 </u>
1 -4 -21 0 <em>remainder is 0 so (x + 1) is a factor</em>
(x - 1)(x + 1)(x² - 4x - 21)
Then, factor the third polynomial
(x - 1)(x + 1)(x + 3)(x - 7)
Now, set each factor equal to zero and solve each one.
(x - 1) = 0 ⇒ x = 1
(x + 1) = 0 ⇒ x = -1
(x + 3) = 0 ⇒ x = -3
(x - 7) = 0 ⇒ x = 7
