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Rom4ik [11]
3 years ago
14

Blueberries are on sale for $2.80 per pint. The regular price is $3.50 per pint. What is the percent of decrease?

Mathematics
1 answer:
maks197457 [2]3 years ago
3 0
The answer is 7% because the sale amount was .70 cents.
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Rewrite the function, differentiate, and then simplify<br><br> y= 3/√x
Anit [1.1K]

Answer:

\frac{dy}{dx} = - \frac{3}{2x^{\frac{3}{2} } }

Step-by-step explanation:

Differentiate using the power rule

\frac{d}{dx} (ax^{n} ) = nax^{n-1}

Given

y = \frac{3}{\sqrt{x} } = 3x^{-\frac{1}{2} } , then

\frac{dy}{dx} = - \frac{3}{2} x^{-\frac{3}{2} } = - \frac{3}{2x^{\frac{3}{2} } }

6 0
3 years ago
You are hiking and are trying to determine how far away the nearest cabin is, which happens to be due north from your current po
Natali [406]

Answer:

101.98 yards.

Step-by-step explanation:

Please refer to the diagram that I drew (sorry for the messiness; I do not own a stylus and so I was using my mouse to try to draw it).

Since the triangle is a right triangle, you can use SOH CAH TOA. In this case, you are trying to figure out the opposite length, but you are given the adjacent. So, we will use tangent to solve this (TOA = Tangent, Opposite over Adjacent).

The angle is 22.6 degrees, and the tangent of the angle is equivalent to the opposite length, x, divided by the adjacent length, 245 yards.

tan(22.6) = x / 245

x / 245 = tan(22.6)

x = tan(22.6) * 245

x = 0.4162598242 * 245

x = 101.9836569

So, you are about 101.98 yards from the cabin.

Hope this helps!

6 0
4 years ago
Julie used 1-centimeter cubes to make the figure below.
masya89 [10]

Answer:

12

Step-by-step explanation:

4 x 3

6 0
3 years ago
Find the domain, range and if it’s a function.
Marta_Voda [28]
Domain: {-1}
Range: {0, 4, 9, 15}
Function? No

Explanation:
The domain is the x value in the given points. The only x value is -1.
The range is the y value in the given points.
You can tell if this is a function if it has repeating x values or not. Since the x value of -1 repeats, it is not a function.

Hope this helps, and please mark brainliest :)
6 0
3 years ago
A piano has 88 keys. Fifty-two of the keys are white.
Tcecarenko [31]

Answer:

36

Step-by-step explanation:

88 - 52

=36

8 0
3 years ago
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