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-BARSIC- [3]
3 years ago
7

NEED HELP DESPERATE. A recipe requires 1 cup of milk for every 4 cups of flour. Choose a linear equation that describes the prop

ortional relationship.
A.
B.
C.
D.

Mathematics
1 answer:
Whitepunk [10]3 years ago
3 0

Answer:

A

Step-by-step explanation:

It goes up by 4 for each cup of flour and over 1 for every cup of milk. Please Brainliest

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What is the x-coordinate for the minimum point in the function f(x) = 4 cos(2x − π) from x = 0 to x = π?
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When you are looking at a graph, a minimum point would be where the curve is decreasing, then begins to increase. Right at the point where it switches, the slope is a horizontal line, or 0. We can take the derivative is f(x), then look for all the x values where the slope (which is equal to the first derivative) is equal to zero.

f'(x) = 2 * -4sin(2x - pi)

The 2 comes from the derivative of the inside, 2x-pi.

So now set the derivative equal to 0.

-8sin(2x-pi) = 0

We can drop the -8 by dividing both sides by -8.

sin(2x-pi) = 0

This can be rewritten as arcsin(0) = 2x-pi

So when theta equals 0, what is the value of sin(theta)? At an angle of 0, there is just a horizontal line pointing to the right on the unit circle with length of 1. Sine is y/h, but there is no y value so it is just 0. If arcsin(0) = 0, we can now set 2x-pi = 0

2x = pi

x = pi/2

This is a critical number. To find the minimum value between 0 and pi, we need to find the y values for the endpoints and the critical number.

f(0) = -4

f(pi/2) = 4

f(pi) = -4

So the minimum points are at x=0 and x=pi




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4 years ago
Lines r and a are parallel. what is m/1?
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Answer:

m/1 is parallel.

Step-by-step explanation:

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3 years ago
Find the area of the figure. (Sides meet at right angles.)
Lubov Fominskaja [6]

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the area is 68 feet

Step-by-step explanation:

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I think it's B.

Step-by-step explanation:

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The line equation in slope-intercept form is y=mx+b

You have one line with a y-intercept at 1 and a slope of -3 -> y=-3x+1

and another with a y-intercept at -1 and a slope of \frac{1}{2} -> y=\frac{1}{2}x-1


The area marked is below the first line and above the second one -> replace = with < and >:

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