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xenn [34]
4 years ago
10

Write an explicit formula for the sequence 4,-1,-6,-11,-16 then find a14

Mathematics
1 answer:
shepuryov [24]4 years ago
6 0
Try this solution:
1. note, that 4-5=-1; -1-5=-6; -6-5=-11; -11-5=-16, etc.
The suggested sequence is arithmetic, where a₁=4; d=-5.
2. using a₁ and d it is possible to calculate a₁₄=a₁+d(n-1)=a₁-5(14-1)=4-5*13=4-65=-61.

Answer: -61
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The girls swim team is hosting a fund raiser. They would like to raise at least $500. They are selling candles for $5 and flower
Tanya [424]

Answer:

1. Only candles  -  100

$500 / 5 = 100 candles & 0 Flowers

2. Only Flowers  -  84

$500 / 6 = 83.3   84 candles & 0 candles

3. Half of each  -  50 candles & 47 flowers

$500 / 5 / 2 =           50 candles

$500 / 6 / 2 = 41.6    47 Flowers

Step-by-step explanation:

4 0
3 years ago
Find the exact value of cos (1140)°.
slamgirl [31]

now let's recall that a full circle has 360°, so then 1140 = 360 + 360 + 360 + 60.

namely, 1140 is 3 full-go-around the circle and then it lands on the I Quadrant at 60°.  Thus cos(1140°) = cos(60°).

what's that cosine of 60°?  Check the picture below.

8 0
3 years ago
In a box of 3636 pencils, 2020 are sharpened. What is the ratio of sharpened pencils to unsharpened pencils?
Alenkasestr [34]
The answer would be
 2020 : 1616
8 0
3 years ago
Read 2 more answers
PLEASE HELP 2 QUESTIONS 45 POINTS!!!!!!!!!
Effectus [21]

Answer:

1. -8x² - 16x - 6      a = -8, b = -16, c = -6

1. 4x² - 1                  a = 4, b = 0, c = -1

Step-by-step explanation:

use the 'foil' method:

(4x + 2)(-2x - 3)

F: -8x²     O: -12x       I: -4x       L: -6

-8x² - 16x - 6

(2x + 1)(2x - 1)

F: 4x²     O: -2x       I: 2x       L: -1

4x² - 1

5 0
3 years ago
10) g(n) = -21+ 3n; Find gl-6)<br> A) 152 <br> B) -20<br> C) 1<br> D) 90
defon
10) g(n) = -21+ 3n; Find gl-6)
A) 152
B) -20
C) 1
D) 90
Your answer would be B

If this helped can I please get brainliest
6 0
3 years ago
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