Step-by-step explanation: You have to substitute the numbers in for x & y
(0, -5): YES
3x - 4y - 8 = 12
3(0) - 4(-5) - 8 = 12
0 + 20 - 8 = 12
20 - 8 = 12
12 = 12
(4, -2): YES
3x - 4y - 8 = 12
3(4) - 4(-2) - 8 = 12
12 + 8 - 8 = 12
20 - 8 = 12
12 = 12
(8, 2): NO
3x - 4y - 8 = 12
3(8) - 4(2) = 12
24 - 8 = 12
16 = 12
(-16, -17): YES
3x - 4y - 8 = 12
3(-16) - 4(-17) - 8 = 12
-48 + 68 - 8 = 12
20 - 8 = 12
12 = 12
(-1, -8): NO
3x - 4y - 8 = 12
3(-1) - 4(-8) = 12
-3 + 32 = 12
29 = 12
(-40, -34): NO
3x - 4y - 8 = 12
3(-40) - 4(-34) - 8 = 12
-120 + 136 - 8 = 12
16 - 8 = 12
8 = 12
Hope this help you!!! :)
Answer:
8.3 cm
Step-by-step explanation:
1. Find the volume of the small cylinder (volume of a cylinder = πr² · h)
π(4.5²) · 17 = 1080.945 cm³
2. Set up the equation to find the volume of the big cylinder
πr² · 5 = 1080.945
3. Divide both sides by 5
πr² = 216.189
4. Divide both sides by π (3.14)
r² = 68.85
5. Square root both sides
r = 8.3 cm (rounded to the nearest tenth)
Answer:
The area of 3 slices is 
or approximate 
Step-by-step explanation:
<em>Find out the area of the cookie cake</em>
The area of the circle (cookie cake) is
we have
----> the radius is half the diameter
substitute
Remember that the area of the complete cookie cake subtends a central angle of 360 degrees
If the cake is divided into 8 slices
then
The central angle of each slice is equal to
360/8=45°
The central angle of 3 slices is equal to
3(45°)=135°
By proportion
Find out the area of 3 slices
Let
x ----> the area of 3 slices
Simplify
----> exact value of the area of 3 slices
Find out the approximate value of the area of 3 slices
assume
substitute
Answer:B or C
Step-by-step explanation:
I did the test
