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d1i1m1o1n [39]
3 years ago
7

N an

Mathematics
1 answer:
Lostsunrise [7]3 years ago
7 0
<h3>Answer:</h3>

C)\ a_n=2a_{n-1}-1

<h3>Explanation:</h3>

You can try the choices to see which one works. The differences between an values double each time. They have the sequence 1, 2, 4, 8. So, you know that choices A) and D) do not work. They show the difference to be constant at 1 or 8. Since the differences are multiplied by 2, C) is a reasonable choice. Trying that, we find it describes the sequence perfectly:

a2 = 2·2 -1 = 3

a3 = 2·3 -1 = 5

a4 = 2·5 -1 = 9

a5 = 2·9 -1 = 17

___

Trying choice B on the last term, we have

... a5 = 3·a4 -3 = 3·9 -3 = <em>24 ≠ 17</em>

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Can someone help me pls
Vlad [161]

Answer:

70°

Step-by-step explanation:

If arc BY is 40, angle BAY is 20.

BAC is 90.

90-20 is 70.

m<YAC=70

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3 years ago
Find the equation of a line which has a slope of 3 and crosses the y axis at -4
pantera1 [17]

Answer:

Step-by-step explanation:

Y = mx+b

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3 years ago
A building is 50 feet tall and casts a 25 foot shadow. If Mark is 6 feet tall, how long would
trasher [3.6K]

Answer:

Mark's shadow would be 3 feet.

Step-by-step explanation:

If a building is 50 feet tall and casts a 25 foot shadow, then the shadow of an object is <u>1/2</u> the length of the actual object.

This can be supported by the division problem:

50 ÷ 2 = 25

If Mark is 6 feet tall, then we need to <em><u>divide</u></em> 6 by 2 in order to find the length of the shadow.

6 ÷ 2 = 3

Therefore, Mark's shadow would be 3 feet.

Hope this helps! :D

7 0
3 years ago
Read 2 more answers
An environmental scientist estimated the number of drops of water in two different jugs. He estimated that the smaller jug conta
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Answer:

The difference the number of drops of water in the larger jug and the number of drops of water in the smaller jug is <u>1,472,000.0000000005</u>.

Step-by-step explanation:

Given:

An environmental scientist estimated the number of drops of water in two different jugs. He estimated that the smaller jug contains 808,000 drops of water and the larger jug contains 2,280,000.0000000005 drops of water.

Now, to find the difference between the number of drops of water in the larger jug and the number of drops of water in the smaller jug.

The drops of water larger jug contains = 2,280,000.0000000005.

The drops of water smaller jug contains = 808,000.

Now, to get the difference between the number of drops of water in the larger jug and the number of drops of water in the smaller jug we subtract:

2,280,000.0000000005-808,000\\\\=1,472,000.0000000005.

Therefore, the difference the number of drops of water in the larger jug and the number of drops of water in the smaller jug is 1,472,000.0000000005.

7 0
3 years ago
What is the increse of 20 miles by 30%
Rzqust [24]
To find 20 percent of a number, multiply the number by 0.2. In this instance, 0.2 x 30 = 6. Therefore, 20 percent of 30 is equal to 6.<span>
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3 0
4 years ago
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