2 years ago

In this equation you have to solve for x

Mathematics

1 answer:

lidiya [134]2 years ago

6 0

Answer:

Step-by-step explanation:

tan 36° = x/40

x = 40 * tan 36°

x ≈ 29.1

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Simplify the expression ?

melomori [17]

Answer:

The answer is cscx(cscx - 1) ⇒ the second answer

Step-by-step explanation:

∵ csc²x = cot²x + 1

∴ $\frac{cot^{2}x+1-1 }{1+sinx}=\frac{cot^{2}x }{1+sinx}$

Multiply the fraction by its conjugate 1 - sinx (up and down)

∴ $\frac{cot^{2}x }{1+sinx}*\frac{1-sinx}{1-sinx}=\frac{cot^{2}x(1-sinx) }{1-sin^{2}x}$

∵ 1 - sin²x = cox²x

∴ $\frac{cot^{2}x(1-sinx) }{cos^{2}x }$

∵ cot²x = cos²x/sin²x

∴ $\frac{1-sinx}{sin^{x}}=\frac{1}{sin^{2}x}-\frac{sinx}{sin^{2}x}=csc^{2}x-cscx$

Take cscx as a common factor

∴ cscx(cscx - 1)

7 0

3 years ago

Water coming out from a fountain is modeled by the function f(x) = −x2 + 8x + 2 where f(x) represents the height, in feet, of th

andrew-mc [135]

$f(x)=-x^{2} +8x+2$
Average rate of change from x = 1 to x = 4 = $\frac{f(4)-f(1)}{4-1}= \frac{( -4^{2}+8(4)+2)-(- 1^{2}+8(1)+2)}{3}= \frac{(-16+32+2)-(-1+8+2)}{3}= \frac{18-9}{3}=$ $\frac{9}{3}=3$

This means that the water rises up with an average speed of 3 feet per second from 1 second to 4 seconds

6 0

4 years ago

5/2 = d-2/4 what does d equal?????? include work.

bezimeni [28]

2/4 also equals 1/2
5/2=d-1/2
Add 1/2 to both sides
5/2+1/2= d
6/2=d
3=d
Hope this helps

7 0

3 years ago

victoria decorates 36 cookies eqch day. Thispast week,she decorated cookies for 5 days What is the best estimate for the total n

almond37 [142]