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horrorfan [7]
3 years ago
6

Which equation shows the commutative property of addition?

Mathematics
1 answer:
aalyn [17]3 years ago
6 0
<span>B. -3 + (7+3) = -3 +(3+7) shows commutative property of addition.</span>
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Problem #3
AfilCa [17]

Answer:

b = 115.4 feet

Step-by-step explanation:

b^2 = a^2 + c^2 - 2 (a)(b) x cos B

b^2 = 230^2 + 360^2 - 2(230)(360) x cos(38 degrees)

b^2 = 52,900 + 129,600 - 2(230)(360) x cos(38 degrees)

b^2 = 182,500 - 165,600 x cos(38 degrees)

b = \sqrt{(16,900)(cos(38)) }

b = 115.4 feet

i hope this helps!! :)

8 0
2 years ago
A sector has angle 2.5 radians and perimeter of 18cm. find the radius of the sector
babunello [35]

Answer:

4 cm

Step-by-step explanation:

Perimeter = 18cm

θ = 2.5 radian

s = rθ, s = Arc length

Perimeter of Sector, P = arc length, s + 2r

Perimeter = rθ + 2r

r = Radius

18cm = r(2.5) + 2r

18cm = 2.5r + 2r

18cm = 4.5r

r = 18 /4.5

r = 4

8 0
2 years ago
3 1/2 + 2 5/6 show me the work please
Zolol [24]
3 1/4 + 2 1/3
= 6712
 = 5712≅ 5.583333
this example do it using this example

8 0
3 years ago
The interest that Julia earns on her investment is given by the equation I=48t where t is the time in years that her money is in
harina [27]
The answer would be D.
3 0
3 years ago
Read 2 more answers
Shane wrapped the kite with paper. How many square inches of paper did Shane use to cover the front and back? 45 POINTS
arsen [322]

Answer:

576

Step-by-step explanation:

First off, we can use the area of a kite formula, (D1*D2)/2 to get the area of one side of the kite, which is simplified to 18 * 32 : which gets us 288. But because we are looking for the area of the front and back side, we multiply 288 by 2- getting the final answer of <u>576</u>.

7 0
3 years ago
Read 2 more answers
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