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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

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Which one is correct ?
Firdavs [7]

Answer:

13.3

Step-by-step explanation:

If AM is 6 and MB is 4, the total length of AB is 10. The ratio of the sides ΔABC and ΔAMN is going to be 5:3 since that 10 divided by 6 can be simplified to 5 divided by 3. If AN is 8 and the ratio of AN to AC is 3:5, the value of AC could be rounded to 13.3.

Hope this helps and stay safe !

8 0
3 years ago
Read 2 more answers
PLEASE HELP ON THIS PLEASE I REALLY NEED HELP
Svetradugi [14.3K]

Answer:

21.07 ft²

Step-by-step explanation:

Radius = 7

Length of the rectangle = 2 * 7 = 14 ft

Area of rectangle = 14 * 7 = 98 ft²

Area of semicircle = π(7)²/2 = 76.93 ft²

So the are of shaded region = 98 - 76.93 = 21.07 ft²

6 0
2 years ago
Is 9,783,005 divisible by 3?
Nataly_w [17]

Answer:

no it isn't divisible

I would appreciate if my answer is chosen as a brainliest answer

6 0
3 years ago
X-5=7 <br>X-8=20<br>X+2=-1<br>X-9=12<br>X+-6=-7<br>X-8=-3<br>-7-X=-9<br><br>HELPPP MEE!!​
Gnom [1K]

Answer:

look below

Step-by-step explanation:

x - 5 = 7

x = 12

.................

x - 8 = 20

x = 28

.................

x + 2 = -1

x = -3

................

x - 9 = 12

x = 21

...............

x + -6 = -7

x = -1

.................

x - 8 = -3

x = 5

..................

-7 - x = -9

-7 = x - 9

2 = x

8 0
3 years ago
The amount of money in dollars in a na account after t years is given
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What are the number or what is the equation.What amount of dollars
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