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2 years ago

Describe what this food chain shows

Mathematics

2 answers:

GuDViN [60]2 years ago

7 0

Answer:

THIS FOID CHAIN SHOWS HOW EACH AND EVERY ANIMALS ARE DEPENDENT ON PLANTS FOR EVERYTHING..

IF THERE WERE NO PLANTS THERE WOULD PROBABLY BE NO ANIMALS.

ALSO IT TELLS THE TRANSFER OF ENERGY ..

nataly862011 [7]2 years ago

6 0

Answer:

Food chain shows how energy transferred from one living organ to another via food. most important to learn how food chain works so that we know what are the important living organisms that make up the food chain and how ecology is balanced

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Jason wants to perform a two-tailed test for equality between two independent sample proportions. Each sample has at least 10 "s

Volgvan

Answer:

0.149

Step-by-step explanation:

Given that Jason wants to perform a two-tailed test for equality between two independent sample proportions

Each sample has at least 10 "successes" and 10 "failures."

Jason's test statistic is -1.44

Since here proportions are tested Z test might have been used.

Z statistic = -1.44

We can get p value for this Z statistic

p value=0.149

p value for two tailed is 0.149

Comparing this with t statistic we can decide whether to accept or reject null hypothesis.

6 0

3 years ago

Phone, it can expect to sell 1,000-2x phones.

Andreas93 [3]

Answer:

Step-by-step explanation:

The x intercepts are 0 and

1000 - 2x = 0 given condition

1000 = 2x Divide by 2

500 = x

So the two intercepts are 0,0 and 500,0

The intercepts mean that for (0,0) the phone company hasn't charged anything, yet. For 500,0 the phone company can sell a single phone -- not when they cost 500 dollars apiece.

The answer to the B part is completing the square.

r(x) = - 2x^2 + 1000x

r(x) = -2(x^2 - 500x )

1/2 ( 500) = 250

250^2 is what you put inside the bracket's to complete the square.

r(x) = - 2(x^2 - 500x + 250^2) + 2*250^2

r(x) = -2(x - 250)^2 + 2*62500

r(x) = - 2(x - 250)^2 + 125000

They should sell their phones at 250 dollars a piece. The total revenue is 125000. Your graph shows exactly the same thing.

4 0

2 years ago

Maximizing revenue. Edwards University wants to determine what price to charge for tickets to football games. At $18 per ticket,

Papessa [141]

Answer:

New price is $12.75

New attendance is 57500

Step-by-step explanation:

For starters, we use the relation.

18 - 3x

Since we don't know the number of times we're expected to deduct $3 from the price.

Again, we have 40000 + 10000x on another hand. Question says to add 10000 people everytime $3 is deducted.

Since (40000 + 10000x) is the number of people, we multiply it by $4.50, the average amount each person spends is then gotten to be

(18 - 3x) (40000 + 10000x) + (40000 + 10000x) (4.5) = 0

Expanding the bracket, we have

[720000 + 60000x - 30000x²] + [180000 + 45000x] = 0, solving further, we have

900000 + 105000x - 30000x² = 0 or

-30000x² + 105000x + 900000 = 0

Then, we find the maximum of a quadratic, by finding the axis of symmetry. Use x = -b/2a

x = -105000 / 2 * -30000

x = -105000 / -60000

x = 1.75

From our earlier equations, the new price then is

18 - 3(1.75) = 18 - 5.25 = $12.75

The new attendance also is

40000 + 10000(1.75) =

40000 + 17500 = 57500

7 0

2 years ago

What is the y-value for f(x) = cos(x) when x = 180°?<br> -1<br> 0<br> 1/2<br> 1

maksim [4K]

You start at 0 on the unit circle the cos of 0 =1, but at cos 0 there is no angle at all so there is no y value so at cos 0 y=0, 180 is the opposite direction of the starting point which is 0 so the x value of cos180= -1 but there is still no upward or downward angle ie.. y value. so the y value = 0 at 0 and 180. answer is 0

8 0

2 years ago

Students ages 10-17 were survey about their eating habits during breakfast

kap26 [50]

ok is there more info about it

6 0

3 years ago

Read 2 more answers