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Alex17521 [72]
3 years ago
6

Which of the following expressions is equivalent to 12x-3+2x+13

Mathematics
1 answer:
Goshia [24]3 years ago
8 0

Answer:

You need to give us the answer choices

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Ahhhh i need help again.
qwelly [4]

Answer:

B

Step-by-step explanation:

A. these simply to 21 + 7x and 21 + 3x

  • this one is incorrect because the 7x and 3x are different

B. these simplify to 10 + x and 10 + x

  • this is the correct one since they are exactly the same

C. these simplify to 21x and 7x + 21

  • these two are not the same because one expression has only a number with a variable but the other one has a number with a variable <em>and </em>another number

D. these simplify to  \frac{7}{3-x}  and  \frac{7}{x-3}

  • in subtraction, the order of the 3 and the x matters, so the equations are not the same
  • example: 6 - 4 = 2 but 4 - 6 = -2
3 0
3 years ago
Given that PHT is a right triangle and HY is an altitude, what is the missing justification in the proof that (ph)^2 +(HT)^2=(PT
aliya0001 [1]
Your answer will be c
4 0
3 years ago
Awarding 90 Points
Amanda [17]

Answer:

  • 1090

Step-by-step explanation:

<h3>Given AP </h3>
  • a₁₂ = 62
  • a₂₀ = 102
<h3>To find</h3>
  • S₂₀
<h3>Solution</h3>
  • a₁₂ = a + 11d = 62
  • a₂₀ = a + 19d = 102

<u>Subtract the first equation from the second one:</u>

  • 8d = 40
  • d = 5

<u>Find a:</u>

  • a + 11*5 = 62
  • a = 62 - 55
  • a = 7

<u>Find the sum of the first 20 terms:</u>

  • S₂₀ = 1/2*20(a + a₂₀) = 10(7 + 102) = 10(109)= 1090

5 0
2 years ago
Write the number seven fifty -one with digits
NISA [10]
I’m guess you are looking for 751?
3 0
3 years ago
Read 2 more answers
Write and solve an inequality using the information about Noah.
Otrada [13]

Noah’s family can wash 21 or fewer loads of laundry before having to add more money to the card

5 0
2 years ago
Read 2 more answers
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