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Vlada [557]
3 years ago
9

Cot^2(alpha)csc(alpha)+2cot(alpha)csc(alpha)-3csc(alpha)

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
4 0

Answer:

Step-by-step explanation:

cot²α csc α+2 cot α csc α-3 csc α

=csc α (cot²α+2cot α-3)

=csc α (cot² α+3cot α- cot α-3)

=csc α[cot α(cot α+3)-1(cot α+3)]

=csc α (cot α+3)(cot α-1)

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Solve the linear equation 2x+2/4=189.5
seraphim [82]
Change 2/4 to 1/2
<span><span>2x+<span>1/2</span>=189.5</span></span>
Subtract <span>1/2</span> from both sides(1/2 = .5)
2x=189
Divide both sides by <span>2</span>
2x/2 = x
189/2= 94.5
x=94.5


6 0
3 years ago
Lisa collected leaves from different trees for a science project. Every day for a week (7 days), she collected 7 leaves. How man
tangare [24]

Answer:

49 leaves

Step-by-step explanation:

7 days x 7 leaves per day = 49 leaves in total

6 0
1 year ago
Solve the system of equations.<br> 12x - 5y = –20<br> y=x+4<br> 2 =<br> Y=
VARVARA [1.3K]

Answer:

Solution :

{x,y} = {0/14261512,4}

Step-by-step explanation:

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = x + 4

// Plug this in for variable y in equation [1]

[1] 12x - 5•(x +4) = -20

[1] 7x = 0

// Solve equation [1] for the variable x

[1] 7x = 0

[1] x = 0

// By now we know this much :

x = 0

y = x+4

// Use the x value to solve for y

y = (-0/14261512)+4 = 4

4 0
3 years ago
Read 2 more answers
A 21 inch piece of steel is cut into three pieces so that the second piece is twice as long as the first, the third piece is 3 i
mestny [16]
3f+3=t
s=2f
21=f+s+t                       

21=f+(2f)+(3f+3)
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8 0
3 years ago
A promoter buys advertising in units of $30,000 each. If he buys two units of broadcast TV, one unit of cable TV, and two units
andriy [413]

Answer:

$150,000

Step-by-step explanation:

The first step is to calculate the total number of units

= 2 +1 +2

= 5

If he buys at the rate of $30,000 for one unit then the total money spent on advertising can be calculated as follows

= 30,000 × 5

= 150,000

Hence the promoter spends $150,000 on advertising

4 0
3 years ago
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