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Mashcka [7]
2 years ago
11

3a+8b-5c 6a- 9b+4c -7a+b+2chow do I solve this by solving using addition operation

Mathematics
1 answer:
jeyben [28]2 years ago
3 0

Answer: 2a+c


Step-by-step explanation: You add all variables that are positive then you subtract by negatives or vice versa. Add 3a+6a-7a yes subtract the 7a which gets you 2a. Add 8b+b-9b, you get 9b-9b which is 0 so you don’t need b in the problem anymore. -5a+4c+2c then you get c, because it is 1 c. So your answer is 2a+c. :P Hope this helped.


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What is the reason for each step in the solution of the equation?
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3 years ago
Find x for each of these triangles please
notka56 [123]

Answer:

8) 10°

9) X can not be determined.

10) 10°

11) 12 units.

Step-by-step explanation:

8) The three sides of the given triangle are equal. Hence, the triangle is an equilateral triangle, hence each angle will be 60°.

So, 6x = 60°  

⇒ x = 10°.

9) The three angles of the given triangle are equal. Hence, the triangle is an equilateral triangle, hence each side will be equal.

So, 6x - 5 = 6x

So, x can not be determined from this equation.

10) Δ KLM is equilateral, so, KN will bisect ∠ MKL. So, ∠ NKL = 30°

Hence, 3x = 30°

⇒ x = 10°

11) In Δ XYZ, XZ = XY , so, ∠ Z = ∠ Y.

Again, ∠ X is given to be 60°.

Therefore, each angle is 60°.

So, the triangle XYZ is equilateral, and each side will be equal.

So, 3x + 8 = 4x - 4

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3 0
3 years ago
Bill is h cm tall. Siena is 4cm taller than bill.Write down an expression in terms of h for siena's height in cm
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Since Seina is 4cm taller, her height is h+4.




5 0
2 years ago
20 point REWARD + Brainleist &lt;3
jek_recluse [69]
B the answer is b because yiu do like add e square 27 +* 9 + x = 8 -/273/73
5 0
2 years ago
Read 2 more answers
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