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matrenka [14]
3 years ago
13

How do you solve 75.25-11.92?

Mathematics
1 answer:
slamgirl [31]3 years ago
8 0
Your answer would be 63.33. ((: ❤️
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Suppose that the exchange rate from U.S. dollars to Canadian dollar is 1 U.S. dollar per 1.0028 Canadian dollars. Joey exchanges
Svetradugi [14.3K]

Answer:

373,952 dollars

Step-by-step explanation:

375/1,0028

4 0
3 years ago
Given: cos θ=-4/5, sin x = -12/13, θ is in the third quadrant, 
USPshnik [31]

By definition of tangent,

tan(2<em>θ</em>) = sin(2<em>θ</em>) / cos(2<em>θ</em>)

Recall the double angle identities:

sin(2<em>θ</em>) = 2 sin(<em>θ</em>) cos(<em>θ</em>)

cos(2<em>θ</em>) = cos²(<em>θ</em>) - sin²(<em>θ</em>) = 2 cos²(<em>θ</em>) - 1

where the latter equality follows from the Pythagorean identity, cos²(<em>θ</em>) + sin²(<em>θ</em>) = 1. From this identity we can solve for the unknown value of sin(<em>θ</em>):

sin(<em>θ</em>) = ± √(1 - cos²(<em>θ</em>))

and the sign of sin(<em>θ</em>) is determined by the quadrant in which the angle terminates.

<em />

We're given that <em>θ</em> belongs to the third quadrant, for which both sin(<em>θ</em>) and cos(<em>θ</em>) are negative. So if cos(<em>θ</em>) = -4/5, we get

sin(<em>θ</em>) = - √(1 - (-4/5)²) = -3/5

Then

tan(2<em>θ</em>) = sin(2<em>θ</em>) / cos(2<em>θ</em>)

tan(2<em>θ</em>) = (2 sin(<em>θ</em>) cos(<em>θ</em>)) / (2 cos²(<em>θ</em>) - 1)

tan(2<em>θ</em>) = (2 (-3/5) (-4/5)) / (2 (-4/5)² - 1)

tan(2<em>θ</em>) = 24/7

4 0
3 years ago
What is the area of the shaded region?<br> 3 cm
stiks02 [169]

Answer:

7.74cm ^2

Step-by-step explanation:

a=pie * r ^2

3.14*3^2=3.14*9=28.26  then you know all sides of a square are equal and 3 is half of 1 side so 6*6-=36 36-28.26=7.74

3 0
3 years ago
A photograph in a catalog has a scale of 2 in: 5 ft. A tent in the photograph is 3 inches long.
VladimirAG [237]

Answer:

7.5 ft

Step-by-step explanation:

divide 5 by 2 -- 5 ÷ 2 = 2.5

now multiply 2.5 by 3 -- 2.5 × 3 = 7.5

7 0
3 years ago
A botanist is working with a sample of algae cells in a petri dish. The change in the population of algae cells can be modeled b
Sophie [7]

Answer:

The population is decaying at a rate of 11% per minute.

Step-by-step explanation:

We have that € is the inicial sample of algae cells, and f(t) shows the sample after t minutes.

As € is multiplied by a number between 0 and 1, that means the sample will decrease it's size as the time passes.

The inicial sample is €, and after 1 minute the sample will be 0.89€, that is, it will decrease by 0.11€ or 11% of the previous sample.

So the correct option is:

The population is decaying at a rate of 11% per minute.

6 0
3 years ago
Read 2 more answers
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