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jeka94
3 years ago
6

Hey guys. Just need help checking my equation. I have x = -0.6. thanks.

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
3 0

12 - 4( - 3x + 5) - 8x = 20 \\ 12 + 12x - 20 - 8x = 20 \\ 4x - 8 = 20 \\ 4x = 28 \\ x = 7
Not quite
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I know how to do this and the teacher don't teach it right so I don't get how to do it at all
Kobotan [32]
I dont have time to do all of these right now my apolgies but Ill explain how to do it.

The 3 angles of a triangle add up to 180.

So let me show you how to do 1.
.
.
.

1. 58 degrees

92, 30, ?

If we add together the first two angles,
92+30= 122
Knowing the total addition of all three angles would ne 180, we can subtract 122 from it to get the third angle.
180-122= 58

So we now know the last angle is 58 degrees because

92+30+58=180
4 0
3 years ago
Read 2 more answers
1.The entry tickets at a community fair cost $5 for children and $10 for adults. On a certain day 1000 people entered in the fai
ZanzabumX [31]

Answer:

568 ADULTS

284 CHILDREN

Step-by-step explanation:

5C+10A=7100

A=2C

5C +10(2C)=7100

5C+20C=7100

25C=7100

C=284

A=2C

A=568

BRAINLIEST???

8 0
2 years ago
Normal distribution HELP
elena-14-01-66 [18.8K]

Answer:

0.0351478382 (To be precise)

Step-by-step explanation: Can I get brainliest? Thanks

1. Normal Distribution --> Z ~ (0,1^2)

2. Use normalcdf(lower bound, upper bound, μ, σ) function on a graphing calculator

P(Z≥103.53) = normalcdf(103.53, 1e99 [default], 80, 13)

P(Z≥103.53) ≈ 0.03

3. μ+σ ≈ 13.59% According to Z-distribution chart

80+13=93

So about 93 exceed only the top 16% (estimated answer not exact)

8 0
2 years ago
The land area of the earth is 57,505,708 square miles. To the nearest tenth, how much longer is the land of Asia than North Amer
Leokris [45]

Answer:

57,505,708 x .165 =9488441.82 NA

57,505,708 x .3 = 17251712.4  Asia

17251712.4  - 9488441.82 = 7763270.58

That's how much larger asia is than north america

Step-by-step explanation:

8 0
3 years ago
If f={(0,2),(2,6),(3,5),(4,9)} what is f^(-1)(9)
tangare [24]

Answer is 9 f-^1

I hope this correct :D

7 0
2 years ago
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