Side length of the heptagon is 2.5 ft.
<u>Step-by-step explanation:</u>
To find the area of the heptagon, we can use the formula,
A = nsr
n = number of sides
s = side length
r = apothem
Now we can rearrange the formula to get the side as,
s = A/nr
= 90.825 / 7 ×5.19
= 2.5 ft
So the side length of the heptagon is 2.5 ft.
Answer:
D.12
Step-by-step explanation:
sorry I just know its 12 I promise
Answer:
x= 2 and y = -4
Step-by-step explanation:
8x + 3y = 4 ---------------------------------(1)
-7x + 5y = -34 -----------------------------(2)
Multiply through equation (1) by 5 and multiply through equation(2) by 3
40x + 15y = 20 ----------------------------(3)
-21x + 15y =-102----------------------------(4)
Subtract equation (4) from equation (3)
61x = 122
Divide both-side of the equation by 61
61x/61 = 122/61
(At the left-hand side of the equation 61 will cancel-out 61 leaving us with just x, while at the left-hand side of the equation 122 will be divided by 61)
x = 122/61
x=2
Substitute x= 2 into equation (1)
8x + 3y = 4
8(2) + 3y = 4
16 + 3y = 4
Subtract 16 from both-side of the equation
16-16 + 3y = 4-16
3y = -12
Divide both-side of the equation by 3
3y/3 = -12/3
y = -4
x= 2 and y = -4
No 2 times 4 is 8 and 3 times 3 is 9, 8 plus 9 is not 33 it’s 17
<h3>
Answer:</h3>
12 3/4 miles
<h3>
Step-by-step explanation:</h3>
Eric is increasing his distance by 2 3/8 miles per day. In 2 more days, his distance will be 2×(2 3/8) = 4 3/4 miles more than on Wednesday.
... 8 + 4 3/4 = 12 3/4 . . . . miles on Friday
_____
<em>Rate of increase</em>
The difference between Tuesday and Monday is ...
... 5 5/8 - 3 2/8 = 2 3/8
The difference between Wednesday and Tuesday is ...
... 8 - 5 5/8 = 2 3/8
Thus, it appears that Eric is jogging 2 3/8 mile more each day than the day before.