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jasenka [17]
3 years ago
10

What belongs in the box marked with the question mark in the proof below? PLEASE HELP ME !!!!!

Mathematics
2 answers:
Ymorist [56]3 years ago
8 0

Answer:

m∠3 = 90° is derived in (2)

Step-by-step explanation:

In this step, a fact derived in step 2 is substituted.

Advocard [28]3 years ago
4 0

Answer:

Replace m<3 = 90 . Derived from applying statement (2) in statement  (4)

Step-by-step explanation:

The exercise is a one by one step proof of complementary angles. As in statement 2 we have proven that m<3 is 90 degrees and in statement 4 that m<1+m<2+m<3 is 180 degrees, we only need to replace statement 2 conclusion into statement 4 conclusion , as there in no reason for any further proof.

In the next reasons we must prove that the other angles measure 90 degrees which will allow us to conclude that both angles are complementary ( sum 90 degrees).

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PLEASE HELP SUPER EASY!!!
Effectus [21]

A1. 12 i.e option D

A2. 3n-7 i.e option A

A3. -6n+20 i.e option D

A4. -70 i.e option C

Step-by-step explanation:

aₙ = a₁ + (n - 1) × d  

aₙ = the nᵗʰ term in the sequence

a₁ = the first term in the sequence

d = the common difference between terms

Using the above formula to solve the first part, we have :

  • -8 = a₁ + (2-1) × 5
  • -13 = a₁
  • a₆ = -13 + (6-1) × 5
  • a₆ = 12

For the second part, we have :

  • aₙ = -4 + (n-1)×3
  • aₙ = -4 + 3n -3
  • aₙ = 3n-7

For the third part, we have :

  • a₁=14 ; d=-6
  • aₙ = 14 + (n-1)×(-6)
  • aₙ = -6n + 20

For the fourth part, we have :

  • aₙ = 14 + (15-1)×(-6)
  • aₙ = -70
7 0
3 years ago
You can buy DVDs at a local store for 15.59 each. You can buy them at on online store for 13.99 each plus $6 shipping. How many
dalvyx [7]
Local(L) = 1 x (15.99)
Online(O) = (1 x 13.99) + 6

So use that equation until you find the same number.

L1=15.99
O1=19.99

L2=31.98
O2=33.98

L3=47.97
O3=47.97

And your answer will be three from local and three from online.
8 0
3 years ago
If Quamie purchased 5 pencils for 20¢, how much will 20 pencils cost?
4vir4ik [10]

Answer:

80 cents

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
a bullet train can travel at 170 miles per hour will a graph representing distance in miles compared to time an hour show a prop
lina2011 [118]
Yes it will. For every one hour, the train travels 170 miles. That’s the rate of change/ the ratio-> 1:170
8 0
3 years ago
Read 2 more answers
Ratio equivalent to 12:21 with lower terms
slamgirl [31]
12:21 Each / by 3= 4:7
8 0
3 years ago
Read 2 more answers
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