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Vlad1618 [11]
2 years ago
8

P

Mathematics
1 answer:
coldgirl [10]2 years ago
4 0

Answer:

...

Step-by-step explanation:

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Complete the identity. =( sin (alpha +beta))/ (cos alpha cos beta)=?
dem82 [27]
Hi, We know:

Sin(a + b) = 2.Sin(a).Sin(b)

Then,

= 2Sin(a).Cos(b)/Cos(a).Cos(b)

Canceling Cos(b)

= 2Sin(a)/Cos(a)

As Tan(a) = Sin(a)/Cos(a)

Then we will stay:

= 2Tan(a)

Or

= Tan(a) + Tan(a)

There is anything wrong on the alternatives
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3 years ago
The graph of the piecewise function f(x) is shown what is the domain of f(x)
Rom4ik [11]

The domain of a function is where we have a value for x.

Since that's the case the domain of f(x) = {x e R / 1 ≤ x < 5}

We see that we have a value for x = 1 cuz we have a filled circle, but we don't have a value for x = 5, look at the unfilled circle

So, our x can vary between 1 and 5, but can't be 5.

8 0
3 years ago
In September, a greeting card company's total profit was 22% less than it was in august. The total profit for the two months was
Trava [24]
Profit for August: x
Profit for September: x - 22%x
Total Profit for August & September: $689,000

x + x - 22% x = 689,000

2x - .22x = 689,000
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x = 689,000/1.78
x = 387,078.65

August Profits: $387,078.65
September Profits: 387,078.65 - (22%)(387,078.65) = 387,078.65 - 85,157.30 = 301,921.35

August Profits: $387,078.65

September Profits
$301,921.35
5 0
3 years ago
A school purchased 45 tote trays for
Alexeev081 [22]

Answer:

6.75

Step-by-step explanation:

Simply MULTIPLY.

4 0
3 years ago
Sally sells strawberries at the farmer's market
rusak2 [61]

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thats cool so does Susan

Step-by-step explanation:

4 0
2 years ago
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