Answer:
28. W=20ft
29. -340
30. 56, 57, 58
Step-by-step explanation: For 28
1. A = L*W
2. A = 240
3. 240 = 12*W
4. (240/12) = W
5. 20ft = W
Step-by-step explanation: For 29
X +300 = -40
X = -40 - 300
X = -340
Step-by-step explanation: For 30
171/3 = 57, therefore 57 is the average
56, 57, 58
Answer:
The domain is all real numbers.
The function is always decreasing
Step-by-step explanation:
Assuming the given function is
for
Then f(x) is an exponential decay function.
This means that, the domain will be all real numbers.
The range will be y<0
The y-intercept is (0,-1)
There is no x-intercept.
The graph is a decreasing function.
I would say B. By multiplying the first equation by -5, you create -5y. If you add that to the second equation, your cancelling out the 5y term, and get a new equation with only z and a constant.
Y=5x+3. because your y axis is moved
Let the 3 sides of a triangle be a,b and c
For it to be a triangle then
a + b > c , a + c > b , b + c > a
12 , 12 , 20
12 + 12 > 20
24 > 20
12 + 20 > 12
32 > 12
Hence is a triangle
10,3,7
3 + 7 .....10
10 = 10
Hence is not a triangle since it does not satisfy the rules above
7,7,11
7 + 7 .... 11
14 > 11
11 + 7 ..... 7
18 > 7
Hence the figure formed is a triangle
24,9,12
9 + 12 .... 24
21 < 24
Hence is not a triangle
The rule is that for 3 numbers to form the sides of a triangle then the sum of any 2 of the numbers should be equal to the third
