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ohaa [14]
3 years ago
14

How do you simplify this?

Mathematics
1 answer:
levacccp [35]3 years ago
4 0

Answer:

tan x

Step-by-step explanation:

(tan-x)[sec(pi/2)-x] (sin-x)

We know that tan (-x) = - tan (x)  and sin (-x) = - sin (x)

-(tanx)[sec(pi/2)-x] -(sinx)

(tanx)[sec(pi/2)-x] (sinx)

Using the identity sec = 1/ cos

sec ( pi/2 -x) =1/cos ( pi /2 -x)

We know that cos (s-t)=cos (s) cos(t) + sin (s) sin (t)

1/ ( cos  pi/2  cos x + sin pi/2 sin x) = 1/(0 cos x - 1 sinx) = 1 / sinx

Replacing into the equation

(tanx)[1/ sinx] (sinx)

tan x

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WOULD YOU RATHER use a coupon for $20 off 10
tatiyna

Answer:

$20 off 10

Step-by-step explanation

it really depends on how much there is in your order, but if its more than 10 i would use $20 off 10 because its less stuff so the prices would go lower.. if that makes any sense

6 0
3 years ago
Sam and Jeremy have ages that are consecutive odd integers. The product of their ages is 783, which equation could be used to fi
stepladder [879]
(2x+1)=Jeremy´s age
(2x+3)=Sam´s age.
we suggest this equation:
(2x+1)(2x+3)=783
4x²+6x+2x+3=783
4x²+8x-780=0
x²+2x-195=0

We solve this quadratic equation:
x=[-2⁺₋√(4-4*1*(-195))]/2=(-2⁺₋28)/2

x₁=(-2-28)/2=-15 this solution is not valid.
x₂=(-2+28)/2=13

Jeremy´s age=2x+1=2*13+1=27
Sam´s age=2x+3=2*13+3=29



7 0
3 years ago
Can you help me solve this problem please and thank you ?
d1i1m1o1n [39]

Answer:

70%

Step-by-step explanation:

35:50*100 =

( 35*100):50 =

3500:50 = 70

Hope it helps!

3 0
4 years ago
Read 2 more answers
A system of equations is graphed on a coordinate plane.
lys-0071 [83]
The answer is (1,4) because it is closer to those numbers
6 0
3 years ago
. Choose the method of pay that would result in the most earnings for one month on sales of $73,620. A. Straight commission of 6
stich3 [128]
For option A: Earning = 0.06 x $73,620 = $4,417.20
For option B: Earning = $3,000 + 0.02 x $73,620 = $3,000 + $1,472.40 = $4,472.40
For option C: Earning = 0.04 x $50,000 + 0.09 x ($73,620 - $50,000) = $2,000 + 0.09 x $23,620 = $2,000 + $2,125.80 = $4,125.80
For option D: Earning = 0.05 x $35,000 + 0.07 x $(73,620 - 35,000) = $1,750 + 0.07 x $38,620 = $1,750 + $2,703.4 = $4,453.40

Therefore, the method that yeilds the most earning is m<span>onthly salary of $3,000 plus 2% commission on all sales</span> .
3 0
3 years ago
Read 2 more answers
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