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Ivenika [448]
3 years ago
5

What causes the normal ocean waves that continuously crash on the beach? A. Wind B. Upwelling C. The moon D. Earthquakes

Mathematics
2 answers:
stira [4]3 years ago
8 0
The answer is A: Wind
Misha Larkins [42]3 years ago
4 0
C. The moon. 

Tides are actually caused by the gravitational pulls of the moon and the sun on the earth.
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the first term of an arithmetic sequence is -27. the common difference of the sequence is 6. What is the sum of the first 30 ter
Nina [5.8K]

Answer:

1800

Step-by-step explanation:

The sum to n terms of an arithmetic sequence is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Here a₁ = - 27 and d = 6, thus

S_{30} = \frac{30}{2} [ (2 × - 27) + (29 × 6) ]

     = 15( - 54 + 174)

     = 15(120)

     = 1800

4 0
3 years ago
the 5th graders at beeville elementary are attending the holiday performance in the auditorium there are 476 students a row can
Brrunno [24]
9 student because if each row holds nine then the last row must hold nine
8 0
3 years ago
Read 2 more answers
2 numbers are in the ratio 1:2 if the first number is decreased by 5 and second number is increased by 4 their ratio becomes 5:4
Anna35 [415]

Answer:

-20/3 & -40/3

Step-by-step explanation:

Let’s say that the 1st number is X and the 2nd number is Y.

Given that x:y = 1:2 => x/y = 1/2 => 2x = y

and a-5/y+4 = 5/4 (The first number is decreased by 5 and the second number is increased by 4.)

=> 4(x - 5) = 5 (y + 4)

=> 4x - 20 = 5y + 20

=> 4x - 5y = 40

As, 2x = y , 4x = 2y

=> 2y - 5y = 40

=> -3y = 40

=> y = -40/3 ; x = y/2 = -20/3

This might be confusing but I hope this helps :)

7 0
3 years ago
If 9^(2x-1)=81^(x-2)/3^x find x​
notsponge [240]

The answer is to your question is x=-6

8 0
2 years ago
F(x)= x/x-7<br> What is the domain of f?
Dmitry [639]

Answer:

(-∞,7) U (7,∞)

Step-by-step explanation:

All real values of x such x ≠ 7

7 0
3 years ago
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