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bogdanovich [222]
3 years ago
6

What is the common difference for the arithmetic sequence: 8.6, 6.2, 3.8, 1.4, −1, −3.4, …

Mathematics
1 answer:
Norma-Jean [14]3 years ago
4 0

Answer:

-2.4

Step-by-step explanation:

Given that this is an arith. seq., the common difference is the difference between any two adjacent numbers of this sequence.  Choosing 3.8 and 1.4 at random, and subtracting, we get -2.4.  Note that 3.8 less 2.4 is 1.4, and that 8.6 less 2.4 is 6.2, and so on.

Since this is a decreasing sequence, the common difference must be a negative number:  -2.4.

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4-2x=22 relationship can be written as
Dovator [93]

Answer:X=-9

Step-by-sep explanation:

4-2X=22

Move towards

⇒-2X=22-4

Multiply -1

⇒2X=-18

Divide by two

⇒X=-9

8 0
2 years ago
Two girls were competing in 100 meter dash. The first girl ran it in 14.47 seconds. The second girl ran it in 13.88 seconds. How
Butoxors [25]

Answer:

the second girl was. 59 seconds faster than the first girl.

Step-by-step explanation:

14.47-13.88= .59

8 0
3 years ago
Raul bought a total of 34 more games than Albert. Together they downloaded 220 songs. How many songs did each download?
Vesnalui [34]

Answer:

34

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
I need help it is confusing?????
algol [13]

Answer:

1. 7

2. 15

3. 181

Step-by-step explanation:

Just make sure that you make your denominator a whole number

1. 9.8/1.4....,you multiply by 10...which only removes the comma but it keeps the structure of the question

Always remember that what you do to the denominator...you also do to the numerator

: 9.8/1.4 × 10/10 = 98/14 = 7

2. 40.5/2.7....,you multiply by 10

: 40.5/2.7 × 10/10 = 405/27 = 15

3. 3.62/0.02...., you multiply by 100

: 3.62/0.02 × 100/100 = 362/2 = 181

5 0
3 years ago
2. <br> Find the area of the region bounded by the graphs of y = -x2 + 3x + 4 and y = 4. (5 points)
Kipish [7]

Answer:

4.5 sq. units

Step-by-step explanation:

area = -⅓x³+3/2 x² ] 0 to 3

= -⅓(3)³+ 3/2 (3)² -0

= -9 + 27/2

= -9 + 13.5

= 4.5 sq. units

8 0
3 years ago
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