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dimaraw [331]
3 years ago
7

What values will complete this table to show direct variation? Help! And quick!!!

Mathematics
2 answers:
lidiya [134]3 years ago
8 0

Answer:

0, -4, -8

Step-by-step explanation:

multiply 4 by x

4*1=4

4*0=0

4*-1= -4

4*-2= -8

4*-3= -12

vlada-n [284]3 years ago
7 0

Answer: 0 -4 and -8

Step-by-step explanation:

If you divide -12/-3=4 and 4/4=1

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What is the mean in 74,75,80,76,75,81,78?
Alina [70]

Answer:

77

Step-by-step explanation:

Add the numbers together, then divide them to how much numbers are there.

74 + 75 + 80 + 76 + 75 + 81 + 78 = 539

Since there are 7 numbers, you divide 539 by 7.

539/7 = 77

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2 years ago
What is Number 13 plss I need answer ASAP
Sergeu [11.5K]

Answer:

Step-by-step explanation:

As you can see, she bought 8 muffins and 2 of them were apple, and the other 2 were banana.

( The rest were blueberry )

Since her family ate the APPLE and BANANA muffins, it's asking you to find the FRACTION of the muffins they ate. So 4 banana and apple muffins outta 3 varieties ( Total 8 muffins )  and 4 blueberry left.

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What is the surface area of this design?
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3 years ago
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How do I solve this:<br> (-3z2+z+13)-(6z2+7)
vesna_86 [32]
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2 years ago
There are 22 rows of seats on a concert hall: 23 seats are in the 1st row, 27 seats on the 2nd row, 31 seats on the 3rd row, and
JulijaS [17]
We can model this situation with an arithmetic series.
we have to find the number of all the seats, so we need to sum up the number of seats in all of the 22 rows.

1st row: 23
2nd row: 27
3rd row: 31
Notice how we are adding 4 each time.

So we have an arithmetic series with a first term of 23 and a common difference of 4.

We need to find the total number of seats. To do this, we use the formula for the sum of an arithmetic series (first n terms):

Sₙ = (n/2)(t₁ + tₙ)

where n is the term numbers, t₁ is the first term, tₙ is the nth term

We want to sum up to 22 terms, so we need to find the 22nd term

Formula for general term of an arithmetic sequence:

tₙ = t₁ + (n-1)d,

where t1 is the first term, n is the term number, d is the common difference. Since first term is 23 and common difference is 4, the general term for this situation is

tₙ = 23 + (n-1)(4)

The 22nd term, which is the 22nd row, is

t₂₂ = 23 + (22-1)(4) = 107

There are 107 seats in the 22nd row.

So we use the sum formula to find the total number of seats:

S₂₂ = (22/2)(23 + 107) = 1430 seats

Total of 1430 seats.
If all the seats are taken, then the total sale profit is

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