Answer:
see explanation
Step-by-step explanation:
The perimeter is the sum of the 3 sides, that is
perimeter = 8 + 12 + 17 = 37 cm
To use Heron's formula for area (A)
A = 
where a, b and c are the lengths of sides and s the semi perimeter
s = 37 ÷ 2 = 18.5
let a = 8, b = 12 and c = 17, then
A = 
= 
=
≈ 43.52 cm² ( to 2 dec. places )
Answer:
7,034
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
when x = 0
Answer:
4 and 5
Step-by-step explanation:
Let the numbers be x and y
If their sum is 9, hence;
x + y = 9 ....1
When reversed
10y+x = 2(10x+y)
10y+x = 20x + 2y
10y - 2y = 20x - x
8y = 19x
y = 10x/8 ...2
Substitute equation 2 into 1;
From 1;
x+y = 9
x +(10x/8) = 9
18x/8 = 9
18x = 72
x = 72/18
x = 4
Since x+y =9
y = 9-x
y =9-4
y = 5
Hence the numbers are 4 and 5
Answer:
(b) 
Step-by-step explanation:
Given: Cost of car is 
Sales tax is
The license and title charges are 
To find: The amount that the credit union will finance.
Solution:
We have,
Cost of car
Sales tax is
of 
Therefore,
sales tax 
The license and title charges 
Now, the amount that the credit union will finance is
cost of car
sales tax
the license and title charges


Hence, the amount that the credit union will finance is
.
So, (b)
is correct.