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polet [3.4K]
3 years ago
12

Which shows the Commutative Property of Addition?

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
5 0

Answer:

B 3+ (7+ -2) = 3 +(-2+ 7)

Step-by-step explanation:

It shows that the answer is the same even if you switch the problem in the parentheses around

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Will give brainliest if answer is correct.
Pachacha [2.7K]

Answer:

Length = 13

Width = 7

Step-by-step explanation:

Given:

length = 2(width) - 1

Area of a Rectangle = lω = 91 cm²

Calculation:

Area of a Rectangle = lω = 91 cm²

(2ω-1)ω = 91

= 2ω²- ω - 91 = 0

=(2ω+13)(ω-7)=0

ω = -6.5       ω=7

length = 2(width) - 1

l=2(7) - 1

l = 13

7 0
3 years ago
Read 2 more answers
A flagpole is 20 feet tall is casting a shadow that is 8.2 feet long at what angle is the sun hitting the ground
Novay_Z [31]

Answer:

∅ = 67.71°

Step-by-step explanation:

The flag pole is 20 ft tall is casting a shadow that is 8.2 ft long .At what angle is the sun hitting the ground. The illustration forms a right angle triangle.

The right angle triangle has an hypotenuse, opposite and adjacent sides. The flag height forms the opposite side. The shadow forms the adjacent side . The angle the sun is hitting the ground can be using SOHCAHTOA principle.

using Tan

tan ∅ = opposite / adjacent

tan ∅ = 20/8.2

tan ∅ = 2.4390243902

∅ = tan⁻¹ 2.4390243902

∅ = 67.7063708403

∅ = 67.71°

7 0
3 years ago
Question 8(Multiple Choice Worth 1 points) (08.02 MC) Which graph best represents the solution to the following pair of equation
elena-s [515]
<span>y = −2x + 13
y = 2x − 3

</span>−2x + 13  = 2x − 3
subtract 2x on both sides
−2x + 13  −2x = 2x − 3 - 2x
simplify
-4x + 13 = -3
subtract 13 on both sides
-4x + 13 -13  = -3 - 13
simplify
-4x = -16
divide both sides by (-4)
   x = 4

substitute x = 4 into y = 2x − 3 to find y

y = 2x − 3
y = 2(4)− 3
y = 8 - 3
y = 3

answer
solution x = 4 and y = 3

hope it helps
6 0
3 years ago
Read 2 more answers
Tuition for one year at the community college Sean would like to attend is about $8,880. Sean plans to save money each month for
blagie [28]

Answer:

c

Step-by-step explanation:

he needs 8880.  and his parents contribute 6000.  so we subtract 6000 from the price of the tuition,  bc his parents are paying for 6000 of the 8880 and we get 2880.  there are 12 months in a year and he saves up every month for two years,  so we multiply 12 by 2 to get 24.  then we divide 2880 by 24 and you get 120.  i hope this helps

8 0
3 years ago
Read 2 more answers
What is the difference of the whole number and the mixed number below? 8-2 7/8 A. 6 7/8 B. 6 1/8 C. 5 7/8 D. 5 1/8
Mariana [72]

Answer:

D. 5 1/8

Step-by-step explanation:

First, convert the mixed number into an improper fraction

8-2 7/8 = 8- 23/8

Calculate the difference

8-23/8 = 41/8

Simplify the fraction

41/8 = 5 1/8

7 0
3 years ago
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