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SVETLANKA909090 [29]
4 years ago
8

Determine if the following are properties write y or n for each

Mathematics
1 answer:
Paul [167]4 years ago
4 0

Answer:

Answers are below

Step-by-step explanation:

5+1=6       No

78+6=76+8    Yes, commutative property of addition

2x+(3x+4x)=(2x+3x)+4x     Yes, associative property of addition

52+(-18)=(-52)+18     No

6+(-6)=0    Yes, identity property of addition

If these answers are correct, please make me Brainliest!

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On a piece of paper, use a protractor to construct a triangle with angle measures of 20° and 30°.
Andrew [12]

Answer:

option 2, 4, and 5 are correct.

Step-by-step explanation:

180 - (20+30) = 180 - 50 = 130

Obtuse triangle is a triangle that has one angle that is more than 90 degrees and all the sides have different lengths since all the angles are different.

5 0
3 years ago
Read 2 more answers
Darien ordered soda for $2.75, a sandwich for $8.50, and a dessert for $3.85. Sales tax was $1.15. Use mental math to find the t
natta225 [31]
What I would do is start with the price of the dessert and the sales tax $3.85+ $1.15= $5. I started with this because when you add the cents they equal a dollar which makes it easier to continue.


Then I would add the 2.75. This would be 7.75.


Then add 7.75 + 8.50. To simplify this, you can add 7 + 8, then .75+ .50

Which would equal 15 + 1.25 + 16.25
3 0
3 years ago
Anthony is an hourly employee with an hourly rate of $21.50. He worked a total of 2,200 hours during the year. He has $650 in in
IrinaK [193]

Answer:$46,150.00

Step-by-step explanation:

21.50 multiplied by 2200 =47,300.00 salary for the year

47,300 +650= 47,950 salary plus interest

47,950- 1,800=46,150.00

6 0
4 years ago
 
Andrews [41]

Answer:

a = 1 and b = 14 or a = 14 and b = 1

Step-by-step explanation:

This means that ab = 14 and a + b = 15. Simple guess and check reveals (1, 14) or (14, 1).

6 0
3 years ago
I would love for someone to help me out :)
Kryger [21]

We can solve this problem in different ways:

0. Statement: As angle 1 and 3 are vertical angles, and angle 1, 5, 4 form a straigth angle, so angle 2 and (algle 4 + angle 5) are vertcal angles too.

Reason:

\begin{gathered} \angle1+\angle4+\angle5=180=\angle2+\angle3(share\text{ the same line)} \\ \angle1=\angle3(verticl\text{ angles)} \\ So, \\ \angle4+\angle5=\angle2 \end{gathered}

3 0
1 year ago
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