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IRINA_888 [86]
3 years ago
14

Simplify: i) (a + b)(5a – 3b) + (a – 3b)(a – b) ii) (a – b) (a2 + b2 + ab) – (a + b) (a2 + b2 – ab) iii) (b2 – 49) (b + 7) + 343

Mathematics
1 answer:
marin [14]3 years ago
8 0

Answer:

plz mark brainliest✌️✌️

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What are they?! Plz help!!!
Anika [276]

Answer

35 = 1,5,7,35


Step-by-step explanation:


5 0
3 years ago
Need help with school
denpristay [2]

Answer: 139°

Reasoning:

Angle 3 and 5 are congruent, so you can put their expressions equal to each other and solve.

14x-1=9x+14

To isolate the x to one side, subtract the 9x from the 14x.

5x-1=14

Now to get the constants on one side, add the 1 to the 14.

5x=15

Now divide both sides by 5 to isolate the x.

5x/5=15/5

x=3

Now that we know that, we can figure out angle 3.

9(3)+14

27+14= 41

Angle 3 = 41°

Now that we know what angle 3 is, we can subtract it from 180° to figure out angle 8 since angle 3 and 8 are supplemtary angles, aka linear pairs.

180°- 41°= 139°

<h3>Double checking your answer:</h3>

41°+139°=180°

3 0
3 years ago
Mark decompose 5/6 into three fractions none of them has a denominator of 6 what fractions did mark use
Sliva [168]

Answer:

2/3 + 2/3 + 1/3.

Step-by-step explanation:

You can use equivalent fractions. 6 is 2x more than <u>3</u>. You can use three as the denominator.

5 0
3 years ago
Five of Teddy’s six cousins can
Sliva [168]

Answer: 0.83

Step-by-step explanation:

The fraction of Teddy's cousins what can do push-ups is \frac{5}{6}. We get this fraction because the problem states that 5 of Teddy's 6 cousins can do 15 push-ups. Now that we have our fraction, we divide to get our decimal.

\frac{5}{6} =0.83

7 0
3 years ago
Two answer left a or b? my mom said a but she not good with math plz help
Sergeu [11.5K]

A would be correct!!!

Glad I could help(:

Can you me with my two questions I recently post?

5 0
3 years ago
Read 2 more answers
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