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Gekata [30.6K]
3 years ago
6

Can u please answer #1

Mathematics
1 answer:
Radda [10]3 years ago
3 0
17 1.
15
19


2. 17
2. 21
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The principle of work states that the ratio of work output to work input is always:
kow [346]

Answer:

work output is always less than work input - the ratio is less than 1.

Step-by-step explanation:

This principle comes from the fact that a machine or system cannot produce more work than is supplied to it, because this would violate the energy conservation law (work is a type of mechanical energy).

In theoretical machines called "ideal machines" the input work is the same as the output work, but these machines are only theoretical because in real applications there is always some type of energy loss, either in heat produced by a machine or processes for its operation, for this reason the output work is always less than the input work.

Regarding the ratio work output to work input:

WO/WI<1

because work input WI is always greater than work output WO.

3 0
3 years ago
Read 2 more answers
Which value for y makes the sentence true? 8 - y = 6 - 1 A. 4 B. 5 C. 1 D. 3
Oksi-84 [34.3K]

Answer:

4

Step-by-step explanation:

3 0
3 years ago
Mary has 10 yards of string. she uses 2 yards of string for a project. she wants to cut the remaining string into pieces that ar
tatiyna
Mary has 10 yards She used 2 yards:
She sis left with 10 - 2 = 8 yards
She want to cut the rest at 1/3 yard long, 
8÷ 1/3 = 8 x 3 = 24 pieces
6 0
3 years ago
Write the first four terms of the sequence defined by An=20-30(n-1)
monitta

The first four terms of sequence is 20, -10, -40, -70

<em><u>Solution:</u></em>

Given that we have to find the first four terms of sequence

<em><u>Given recursive formula is:</u></em>

a_n = 20 - 30(n-1)

<em><u>To find the first term, substitute n = 1</u></em>

a_1 = 20-30(1-1)\\\\a_1 = 20-30(0)\\\\a_1 = 20

Thus the first term of sequence is 20

<em><u>To find the second term, substitute n = 2</u></em>

a_2 = 20-30(2-1)\\\\a_2 = 20-30(1)\\\\a_2 = 20-30\\\\a_2 = -10

Thus the second term of sequence is -10

<em><u>To find the third term, substitute n = 3</u></em>

a_3 = 20-30(3-1)\\\\a_3 = 20-30(2)\\\\a_3 = 20-60\\\\a_3 = -40

Thus the third term of sequence is -40

<em><u>To find the fourth term, substitute n = 4</u></em>

a_4 = 20-30(4-1)\\\\a_4 = 20-30(3)\\\\a_4 = 20-90\\\\a_4 = -70

Thus the first four terms of sequence is 20, -10, -40, -70

3 0
4 years ago
What is 1/5 of and hour
Brilliant_brown [7]
<span>60/5= 12
Just take 60min. and divide it into 5 sections.
So, 1/5 of an hour is 12 minutes.</span>
4 0
3 years ago
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