Answer:

Step-by-step explanation:
If the ratio of the sides is 13:14:15, we can say that the length of each side is 13x, 14x and 15x.
Then, if the perimeter is 84 m, we have:



The length of each side is:



Now, to find the area of the field, we can use the following formula:

Where a, b and c are the sides and p is the semi perimeter:

So we have that:


Answer:
A)c=130/20
B)6.5 calories
Step-by-step explanation:
in one minute the calories burnt are
the equation would be
20 min.=130 calories
1 min.=?c
c=130÷20
part B=130÷20
=6.5 CALORIES
The pattern is adding 8 to the previous number.
ex. 7+8=15, 15+8=23, 23+8=31, 31+8=39
Now for the next 2 terms:
39+8=47
47+8=55
Hope this helps!
Answer:
B.
Vertical angles are the same angles of each other.
14 + 7 = 21
3(14) - 21 = 21
First off, we need to determine what 2/5 is.
2/5 is 40% also known as .40
Now we multiply $60 by .40 and you get 24.
Now you add the two numbers.
60 + 24 = 84
The correct answer should be D, $84.
Hope this Helps!