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bezimeni [28]
3 years ago
10

Find a8 in the arithmetic sequence when a1=-9 and d=7

Mathematics
2 answers:
abruzzese [7]3 years ago
8 0

Answer:

40

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_{n} = a_{1} + (n - 1)d, hence

a_{8} = - 9 + (7 × 7) = - 9 + 49 = 40

IrinaK [193]3 years ago
3 0

What do you mean let me see a picture of the problem

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Mia works at a smoothie shop. For h hours of work, Mia earns 8h dollars. Last weekend, Mia worked 9 hours.
anastassius [24]

Answer:

72$

Step-by-step explanation:

8h

h=9

8*9=72$

8 0
3 years ago
Identify the percent, amount, and base in this problem:<br><br> What is 20% of 50?
Julli [10]

Convert the percentage into a decimal

50 * .20 = 10

50 - 10 = 40

20% of 50 is 40

6 0
4 years ago
Read 2 more answers
Round 1.3981 to 3 significant figures
Scorpion4ik [409]
The answer would be 1.40. The 3 significant figure are 1.39 and it wants us to round so we look at the 8 in 1.3981 and since 8 > 5 we know to round up.
4 0
4 years ago
Which figure has an order 3 rotational symmetry? right triangle equilateral triangle regular hexagon right trapezoid
kvv77 [185]

Answer:- Equilateral triangle has an order 3 rotational symmetry.


Explanation:-

In geometry, a figure has rotational symmetry if it moves onto itself under rotation about an angle at center of rotation.


The order of rotational symmetry is the number of times the shape moves onto itself throughout a rotation of 360°.

An equilateral triangle has all its sides equal with equal interior angle of 60°.

It moves onto itself three times throughout a rotation of 360°.

⇒Equilateral triangle has an order 3 rotational symmetry.

5 0
4 years ago
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Thr diffrence between 4,632 and 20,000
stira [4]
The answer to that is :

15,368
6 0
3 years ago
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