1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nuetrik [128]
3 years ago
14

Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n) = –3 + (n – 1)(–2.2)

Mathematics
1 answer:
Gnesinka [82]3 years ago
7 0
A(n) = a1 + (n - 1) * d
A(n) = -3 + (n - 1) * -2.2
n = term to find
a1 = first term = -3
d = common difference = -2.2

we can already see that the first term is -3 <==

4th term..
A(4) = -3 + (4 - 1) * -2.2
A(4) = -3 + 3(-2.2)
A(4) = -3 - 6.6
A(4) = - 9.6 <== 4th term

10th term...
A(10) = -3 + (10 - 1) * -2.2
A(10) = -3 + 9 * - 2.2
A(10) = -3 - 19.8
A(10) = - 22.8 <===10th term

You might be interested in
The sum of two numbers is 148. The larger number is two less than three times the smaller. What are the two numbers?
Lyrx [107]
Let
x--------->  the larger number
y---------> the smaller number

we know that
x+y=148------> equation 1
x=3y-2------> equation 2

substitute 2 in 1
[3y-2]+y=148--------> 4y=150---------> y=150/4------> y=37.5
x=3y-2----> x=3*37.5-2-----> x=110.5

the answer is
the larger number is 110.5
the smaller number is 37.5
4 0
3 years ago
Read 2 more answers
Identify is this is percent increase or percent decrease, then calculate percentage
vlabodo [156]

<em>Last year the chess club had 30 members. This year the club has 24 members. </em>

Last year, the chess club had 30 members. This year, the club has 24 members. Since this year had less than last year ( 30 > 24), the percent will be decreasing.

To find the percent decrease, you have to use the following formula.

\frac{Difference}{Original} \times 100

Difference refers to the difference between the two numbers, 24 and 30. The difference between 24 and 30 is 6. Original refers to the original number, which is last year's amount of members in the chess group. Therefore, original = 30.

Substitute the numbers into the formula.

\frac{Difference}{Original} =\frac{6}{30} =0.2

To convert the decimal to a fraction, multiply the decimal by 100.

0.2 \times 100 = 20 \%

The answer is the number of chess members decreased by 20%.

____

Since I started off by identifying whether it was decreasing or increasing, I did the work a bit differently. When finding the difference, you would usually subtract 30 from 24, which results in -6. Above I used 6, but if you used -6, you would end up with a result of -20%, which means it decreased by 20%. They bot end up with the same result, but you don't always have to first identify whether it's decreasing or increasing.

____

3 0
3 years ago
Leonard is studying the relationship between the fuel efficiency in miles per gallon (mpg), y, and the speed in miles per hour (
Nataliya [291]

Answer:

D. There is a nonlinear relationship between the speed and fuel efficiency.  

Step-by-step explanation:

A desirable residual plot should show a horizontal band with points randomly distributed about the horizontal axis.

Leonard's plot is definitely nonlinear.

The residuals show a good fit to a parabola.

This suggests that the relation between speed and fuel efficiency may be parabolic.

 

8 0
3 years ago
Helppppo plzn wkjejws​
Tamiku [17]

Answer:

c

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Helpppppppppppppppppppppppppppppppppppmeeeeeeeeeeeeeeeeeeee
Allushta [10]

Answer:

vgjj

ryuuu

fghjk

bnmmm

vhjjkk

5 0
2 years ago
Other questions:
  • Ben went to the hardware store and bought 7 pieces of rope of equal length. The total length of the ropes was 56 meters. How lon
    10·1 answer
  • The label on the car's antifreeze container claims to protect the car between −30°C and 130°C. To covert Celsius temperature to
    11·1 answer
  • Jordan spent a total of 14.85 on a trip to the zoo 2.85 on snacks and the rest on bus fares. How much did she spend on the bus f
    14·2 answers
  • A teacher asked her students how many pets they own.Here are the results: 0,0,0,1,1,1,1,2,2,2,4,4,8 On a piece of paper, draw a
    5·2 answers
  • Simplify the following expression 7d-9-6d-4
    8·2 answers
  • Can you find the base and height measurements for s triangle if you know that the area is 22 square units explain why or why not
    5·1 answer
  • Mary drove from her home to the library. After she left the library, she drove to the park. After that, she drove home. The map
    10·1 answer
  • 10(4-7) What is the value of =(4-1) ? <br>-10 <br>- 6<br> 6<br> 10​
    7·1 answer
  • Which set of ordered pairs represents a function?
    9·1 answer
  • Matthew makes brackets and necklaces he uses 34 beads for each bracket and 72 beads for each necklace he makes 2 more necklaces
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!