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3 years ago

11

Help. IM SO LOST ON THIS! ;(

1 answer:

castortr0y [4]3 years ago

3 0

Answer:

1. 4 $\frac{2}{3}$

Step-by-step explanation:

For question 1, you need to know the ratio between the recipe and the amount in question.

So if in the recipe, it says it uses 3/4 cup of diced ham, and the question uses 1 cup of diced ham, you can divide 1 by 3/4 to get 4/3. This is how many times bigger the amount used in the question than the recipe.

Then it asks for how many cups of potatoes, to do this, you look at the recipe and how many potatoes it uses: 3.5 cups

To solve it then, you just do 3.5 x 4/3 to get 4 $\frac{2}{3}$ cups of potatoes

There's your answer.

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Write the equation of a sine or cosine function to describe the graph.

juin [17]

Step-by-step explanation:

The equation of a trigonometric function is

$y = a \sin(bx + c) + d$

or

$y = a \: cos(bx + c) + d$

Let define some variables,

D is the midline, this refers to the midpoint of the highest y value and lowest y value. Some textbooks call it the vertical translations but it is the same thing.

A is the amplitude. The amplitude is the distance from the midline to the highest y value. Some distance is non negative, the formula for the amplitude is

$|a|$

The period is how often the wave repeats itself on a interval.

Period can't be negative so the formula for period is

$\frac{2 \pi}{ |b| }$

To find the period, look at the extreme points.

The phase shift tells us if the sinusoid have been shifted to the right or left. The formula for the phase shift

$bx + c = 0$

Solving for x gives us

$x = \frac{ - c}{b}$

If our x is negative, we have a phase shift to the right

If our x is Positve, we have a phase shift to the left.

Let solve this equation, Let use Sine since sin(0)=0,

The smallest y value here is 0, and the highest is 2, so the amplitude is 1.

$d = 1$

Next, the distance from the max to the midline is 1, as well the min to the midline is also 1.

So

$a = 1$

We have minimum at 0, and 8, so our period is 8.

$\frac{2\pi}{b} = 8$

Solve for b,

$\frac{\pi}{4} = b$

Plug this in the equation.

$1 \sin( \frac{\pi}{4} x) +$

$y = \sin( \frac{\pi}{4} x) + 1$

The graph passes through (4,2) so let see if that holds true for our equation

$2 = \sin( \frac{\pi}{4} (4)) + 1$

$2 = \sin(\pi) + 1$

$2 = 0 + 1$

$2 = 1$

This doesn't hold true, so we must have a phase shift

Notice that

$\sin( \frac{\pi}{2} ) = 1$

So if we shift this pi/2 to the right, we can get our equation to be true.

$y = \sin( \frac{\pi}{4} x - \frac{\pi}{2} ) + 1$

This equation works so our equation is

$y = \sin( \frac{\pi}{4} x - \frac{\pi}{2} ) + 1$

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2 years ago

Please help me with #27 and 28 and explain please

Mama L [17]

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4 0

3 years ago

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Explain how to find the "geometric mean" of two numbers.

Alex73 [517]

<span>First you multiply them: 2 × 18 = 36.
<span>Then (as there are two numbers) take the square root: √36 = 6.</span></span>

5 0

4 years ago

Anne borrowed $600 for 1.5 years. The yearly interest rate was 12%. How much interest did she owe at the end of 1.5 years?

tigry1 [53]

600(1.5)(.12)

Multiply them all together...

=$108

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3 years ago

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Create a word problem that uses rates

Blizzard [7]

Answer:

Ken can walk 404040 dogs in 888 hours.

How many dogs can Ken walk in 121212 hours?

Step-by-step explanation:

answer= 60

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3 years ago

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