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lions [1.4K]
3 years ago
5

Please help photomaths isn't working and I don't get how to do this

Mathematics
1 answer:
DochEvi [55]3 years ago
7 0
<h2>Answer:</h2>

Our functions are:

f(x) = -5x + 12\\g(x) = -\frac{3}{2}x + 4\\

To solve this, we must use the expression g(-10) - f(3).

-\frac{3}{2}(-10) + 12 - [-5(3)] + 12\\\\15 + 12 - [-5(3)] + 12\\\\15 + 12 - (-15) + 12\\\\27 - (-15) + 12\\\\42 + 12\\\\54

The value of the expression g(-10) - f(3) is <em>15</em>.

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Given a feedlot of about 1200 cows, if an individual cow produces about 50 liters of manure a day, how many liters of manure wou
Amiraneli [1.4K]
Hello!

First you have to find how many liters of manure is made a day

1 cow makes 50 liters a day

We can do 50 * 1200 to find how many liters the cows make a day

50 * 1200 = 60000

Then you multiply this my how many days are in a month

60000 * 30 = 1800000

The answer is 1,800,000 liters of manure a month

Hope this helps!
3 0
3 years ago
Fifty draws are made at random with replacement from the box [ 0 0 1 1 1]. There are 33 ticket 1’s among the draws. The expected
Aleks04 [339]

Answer:

- The Expected value for the sum is 30.

- The Observed sum of 50 draws is 33.

- The Chance Error on the 50 draws is 3.

- The Standard Error on 50 draws is 2.191.

Step-by-step explanation:

The box contains [0, 0, 1, 1, 1]

Using probability to predict the expected outcome.

On one draw, the probability of drawing a 0 is (2/5).

And the probability of drawing a 1 is (3/5).

Probability mass function would look like

X | P(X)

0 | 0.40

1 | 0.60

So, expected value on one draw would be

E(X) = Σ xᵢpᵢ

xᵢ = each variable

pᵢ = probability of each variable

E(X) = (0×0.40) + (1×0.60) = 0.60.

Standard error on one draw = √[Σ(xᵢ - μ)²/N]

μ = E(X) = 0.60

Σ(xᵢ - μ)² = (0 - 0.60)² + (0 - 0.60)² + (1 - 0.6)² + (1 - 0.6)² + (1 - 0.6)² = 1.20

SE = √(1.2/5) = 0.490

So, for 50 draws (with replacement),

E(50X) = 50E(X) = 50 × 0.60 = 30.

For 50 draws, standard error = √50 × 0.490 = 2.191

The expected value for the sum = 30

The observed valued for the sum = (33×1) + (17×0) = 33

Chance Error = (Observed Outcome) - (Expected Outcome) = 33 - 30 = 3

Standard error gives an idea of how large the chance error would be.

Standard error on 50 draws = 2.191

Hope this Helps!!!

5 0
3 years ago
What value of x makes the in quantity 1/2 x greater than or less than 7 true
koban [17]
The answer is 666 because I’m good at math
4 0
2 years ago
14 2/3 yards into feet?
julia-pushkina [17]

Answer:

44.000000001 (exact) or rounded up 44

Step-by-step explanation:

14.666666667*3 because 1 yard= 3 feet

5 0
2 years ago
Read 2 more answers
Evaluate 7[45÷(19-10)]+2<br>​
mr Goodwill [35]

Answer:37

Step-by-step explanation:

5 0
3 years ago
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