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4 years ago

Solve the system by graphing 2x+y=4. y=3x+9

Mathematics

1 answer:

VMariaS [17]4 years ago

3 0

Answer

strech by 2 cordinate 1,4 then 2,8

second one is strech by 3 up 9

Step-by-step explanation:

x=-1

y=2

or thats what is see

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Joey completed 3,556 push ups over a 4-week period (there are 7 days in a week). Joey did the same number of push-ups every day.

wel

Answer:

127 per day

Step-by-step explanation:

Total pushups in 4 weeks = 3,556

4-week period( 7 days a week) = 4 × 7

= 28 days

How many push-ups did Joey do each day?

Push ups per day = Total push ups / Total number of days

= 3,556 / 28

= 127

Push ups per day = 127

Joey did 127 push-ups each day for a 4-week period( 7 days a week)

6 0

3 years ago

The graph below shows the cost that Hondo pays for apples. What does the point (0,0) on this graph mean?

timurjin [86]

Answer:

(0,0) means that he didn't buy any apples so it doesn't cost anything

Step-by-step explanation:

3 0

3 years ago

Mr. Williams physical education class last seven eights hour how many minutes are not spent on instruction

Vedmedyk [2.9K]

The answer is seven and a half mins

5 0

3 years ago

A 300 room hotel can rent every one of its rooms at $80 per room. For every $1 increase in rent, 3 fewer rooms are rented.

galina1969 [7]

Answer:

The hotel charge for each room to maximize its daily revenue and the maximum daily revenue is explained below in details.

Step-by-step explanation:

So for every $1 hike in price, the number of rooms goes underneath by 1.

So the earnings can be displayed by R(x) = (300-x)(80+x)

From that, you require to subtract 22(300-x) since it takes $22 per occupied room.

AND there is a framed cost of $1000 per day.

So your profit function is P(x) = (300-x)(80+x) - 22(300-x) - 1000

Simplified, this is P(x) = -x2 +242x + 16400.

P'(x) = -2x + 242 Set it = to 0

x = 121 which displayed the number of unoccupied rooms.

P(121) = -14641 + 29282 + 16400 = $31041

You can verify by computing P(120) and P(122) which both even $31040.

Hope this helps.

4 0

3 years ago

Assume A, B, C, and D function independently. If the probabilities that A, B, C, and D fail are 0.10, 0.05, 0.10 and 0.20, respe

KIM [24]

Answer:

The probability that the system function is 0.6156

Step-by-step explanation:

We can calculate the chances of two or more independent events by multiplying the chances.

Since the chances of fail are given, to get the chance of pass, we subtract from 1.

Probability that it works = 1 - prob that it fails

For A (probability of fail = 0.10)

Probability that it works = 1 - 0.10 = 0.9

For B (probability of fail = 0.05)

Probability that it works = 1 - 0.05 = 0.95

For C (probability of fail = 0.10)

Probability that it works = 1 - 0.10 = 0.9

For D (probability of fail = 0.20)

Probability that it works = 1 - 0.20 = 0.8

Therefore, the probability that the system function is:

$0.9 * 0.95 * 0.9 * 0.8 = 0.6156$

Approximately, the probability can be written as 0.6 to one decimal place.

3 0

3 years ago