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Margaret [11]
3 years ago
9

Find the first, fourth, and eighth terms of the sequence A(n) = −2 ∙ 2x − 1

Mathematics
1 answer:
Margaret [11]3 years ago
4 0

Answer:

1st term = -5

4th term = -17

8th term = -33

Step-by-step explanation:

1st term = -2 x (2 x 1) -1

             = -2 x 2 - 1

             = -4 - 1 = - 5

4th term = -2 x (2 x 2) -1

              = -2 x 4 - 1

              = -8 - 1 = - 9

8th term = -2 x (2 x 8) - 1

              = -2 x 16 - 1

              = -32 - 1 = - 33

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How do I find the percentage of filled seats verus non filled seats for a class
Natali [406]

Answer:

since i dont have data this is the best i can do

Step-by-step explanation:

non-filled seats diveded by total number of seats, everything multilped by 100 gives you percentage of non-filled seats.

Filled seats diveded by total number of seats, everything multilped by 100 gives you percentage of filled seats.

total should add up to 100

5 0
2 years ago
A 3- pack of boxes of juice costs $1.12. A 12-pack of boxes costs $4.38. A case of 24 boxes costs$8.68.Which is the best buy?
just olya [345]
First, you divide the price by the amount of units in the pack. This is how you find how much one unit is worth in that pack. So for the first pack you divide 1.12 by three, and then you have .37333 repeating, which is about 38 cents. Next is the second pack, where we divide 4.38 by 12 which is .365, which is about 37 cents. The last pack is 8.68 divided by  24 which is .361, or about 36 cents. This means that the 24 pack is the best buy.
In real life you should also consider which would be too much for you or not enough. For example,  you might not even need 24 units of juice. You might only need 12 so you don't have too much extra. But hey, this is just a math problem ;)
8 0
2 years ago
Combine like terms in (3x+5)+(4x-30
tresset_1 [31]

Answer:

The answer is 7x-25

Step-by-step explanation:

(3x+5)+(4x-30)

=3x+4x+5-30

=7x-25

3 0
3 years ago
Read 2 more answers
The Third Side Is Called The base if an isosceles triangle has perimeter 345 cm and base length 85 cm what is the length of each
maks197457 [2]

Answer:

Length of each leg = 130 cm.

Step-by-step explanation:

Given that there is an isosceles triangle which has perimeter 345 cm.

Base length =85 cm.

Since other two sides are equal, let the equal size = x

Perimeter = sum of all 3 sides of a triangle

= 85+x+x = 85+2x

But perimeter = 345 (given)

So equate x term perimeter with actual

85+2x = 345

Subtract 85

2x = 260

Divide by 2

x =130 cm.

Hence answer is 130 cm.

6 0
3 years ago
Read 2 more answers
Find an equation of the line that passes through the pair of points(1,-6) and (-4,9)
AlexFokin [52]

Answer:

The equation of the line that passes through the points

(1,-6) and (-4,9)


is


y=-3x-3


6 0
3 years ago
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