Please help me with this problem 3.14 = 22/7 and r = 7/4

Dairy farmers are aware there is often a linear relationship between the age, in years, of a dairy cow and the amount of milk pr

Jobisdone [24]

Answer:

B. A cow of 5 years is predicted to produce 5.5 more gallons per week.

Step-by-step explanation:

Let $M(a) = 40.8-1.1\cdot a$ , where $a$ is the age of the dairy cow, measured in years, and $M(a)$ is the predicted milk production, measured in gallons per week.

Besides, we consider $a_{1}$ and $a_{2}$ , such that $a_{1}\ne a_{2}$ , we define the difference between predicted milk productions ( $\Delta M$ ) below:

$\Delta M = -1.1\cdot (a_{2}-a_{1})$ (1)

If we know that $a_{1} = 5\,yr$ and $a_{2} = 10\,yr$ , then the difference between predicted milk productions is:

$\Delta M = -1.1\cdot (10-5)$

$\Delta M = -5.5\,\frac{gal}{week}$

That is, a cow of 5 years is predicted to produce 5.5 more gallons per week than a cow of 10 years. Hence, the right answer is B.

6 0

2 years ago

Find the value of x in the rectangle ABCD.

attashe74 [19]

Answer:

52°

Step-by-step explanation:

here's your solution

=> we know that the measure of angle of rectangle is 90°

=> 38° + X = 90°

=> X = 90° - 38°

=> X = 52°

hope it helps

3 0

3 years ago

Read 2 more answers

Describe the key features of the graph of the quadratic function f(x) = x2 - 8x - 20

Zolol [24]

If f(x)=x^2-8x-20 then

dy/dx=2x-8 and d2y/dx2=2

A) Since acceleration is a constant positive the parabola opens upward.

B) Since acceleration is a constant positive the parabola will have a vertex at an absolute minimum

C) The vertex will occur when dy/dx=0, 2x-8=0, 2x=8, x=4

So the axis of symmetry is the vertical line x=4.

The vertex is y(4)=-36, corresponding to the vertex point (4,-36)

The y-intercept occurs when x=0, y(0)=-20, so the y-intercept is the point (0,-20)

7 0

3 years ago

3(x-2)=2(x-3) please help

svlad2 [7]

Answer:

x=0

Step-by-step explanation:

Since no value can be given to fit the inequality, it would be zero

3 0

3 years ago

For what values of x and y is PQRS a parallelogram? P 2y + 2 y + 4 2x + 3 S R y + 5 X = y= 0

MaRussiya [10]

Answer:

x = 2 and y = 3

Step-by-step explanation:

For us to have a parallelogram, the opposite sides must be equal in length

Thus, we have it that;

2y + 2 = y + 5

2y - y = 5-2

y = 3

To get the value of x

y + 4 = 2x + 3

Recall y = 3: substitute this value

3 + 4 = 2x + 3

3+ 4 - 3 = 2x

2x = 4

x = 4/2

x = 2

8 0

3 years ago