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Virty [35]
3 years ago
11

7n-4=31 So what does n represent?

Mathematics
1 answer:
Lorico [155]3 years ago
6 0

Answer:

n=5

Step-by-step explanation:

7n-4   =     31

    +4        +4

7n  =  35

/7        /7

n=5

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Erin weighs 135 pounds and is gaining ½ pound each week. Miranda weighs 143 pounds and is losing ¼ pound each week. Write an equ
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Answer:

  • 10.66 weeks

Step-by-step explanation:

<u>Number of weeks is x</u>

  • 135 + 1/2x = 143 - 1/4x
  • 1/2x + 1/4x = 143 - 135
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3 years ago
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Koby can work about 22 math problems in 30 minutes. At this rate, how many math problems can Koby work in 3 hours
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Pablo Picasso’s Head of a Women, is an example of a(n) ______________.
lina2011 [118]

Answer:

Sculpture in the round.

Step-by-step explanation:

Option A, sculpture in the round, is the right answer.

This is Picasso’s initial Cubist sculpture illustrations the master made of his girlfriend Fernande Olivier in the year 1909. After the return of the couple from a tour to Spain Picasso created the bust in Paris. As in his old Cubist pictures, the frame of her sculpted head is faceted into miniature pieces. Meant to be viewed in the round, the production switches form when seen from various corners. Therefore, it is clear that Pablo Picasso’s "Head of a Women" was a sculpture in the round.

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4 0
4 years ago
Many track hurdlers believe that they have a better chance of winning if they start in the inside lane that is closest to the fi
Fofino [41]

Answer:

χ² = 6.75

χ² Critical = 11.07

Step-by-step explanation:

Given the data :

Expected winnings ;

1/n * total number of wins

Total number of wins = 240

n = number of starting positions = 6

Expected winnings = 1/6 * 240 = 40

Using χ² test :

χ² = Σ(O - E)² / E

O = Observed ; E = Expected

χ² = (32 - 40)^2 / 40 + (33 - 40)^2 / 40 + (45 - 40)^2 / 40 + (44 - 40)^2 / 40 + (50 - 40)^2 / 40 + (36 - 40)^2 / 40

= 6.75

χ² Critical at α = 0.05 ; df = n - 1 ; df = 5

χ² Critical = 11.07

Since χ² < χ² Critical ; WE fail to reject H0.

3 0
3 years ago
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