Dg's plumbing and heating charges $50 plus $70 per hour for emergency service. bill remembers being billed just over $450 for an
1 answer:
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Answer:
8
Step-by-step explanation:
The constant of proportionality bus the amount earned by Ronnie, E, all over the corresponding hours he used in working, h.
Constant of proportionality =
From the graph given, when h = 5, E = 40.
Therefore:
Constant of proportionality =
Answer:
x = 4
Explanation:
Since segment DE is parallel to AC, we can use Thales theorem and write the following equation:
Then, we can solve for x if we cross multiply as:
Therefore, the value of x is 4.
Answer:
The value of -
is 3 ⇒ 2nd
Step-by-step explanation:
The dimensions of any matrix are (m × n), where
- m is the number of its row
- n is the number of its column
Ex: Matrix A of dimensions (2 × 3) has 2 rows and 3 columns, where
means the element in the 1st row and 1st column
means the element in the 1st row and 2nd column
means the element in the 1st row and 3rd column
means the element in the 2nd row and 1st column
means the element in the 2nd row and 2nd column
means the element in the 2nd row and 3rd column
Now lets solve the problem
∵ The matrix B has 3 rows
∴ m = 3
∵ The matrix B has 4 columns
∴ n = 4
∴ The dimensions of matrix B are (3 × 4)
∵ means the element in the 2nd row and 4th column
∴ = 9
∵ means the element in the 3rd row and 2nd column
∴ = 6
- Find the value of -
∵ -
= 9 - 6
∴ -
= 3