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katovenus [111]

3 years ago

13

T^3-9t^2+15t use the equation to find t

1 answer:

andreev551 [17]3 years ago

4 0

Answer:

DONT CARE I WISH u GET FAILED

MNMCZ JHJFSDFHDGFJCXBH

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How to solve this :') please help

blsea [12.9K]

Answer:

3/2

Step-by-step explanation:

sin(3π/4 - β) = sin(3π/4)cosβ - cos(3π/4)sinπ =

$\sin(\frac{3\pi}{4}-\beta)=\sin(\frac{3\pi}{4})\cos\beta-\cos\frac{3\pi}{4}\sin\beta\\=\frac{1}{\sqrt{2}}\cos\beta-(-\frac{1}{\sqrt{2}})\sin\beta\\\\=\frac{1}{\sqrt{2}}(\cos\beta +\sin\beta)\\\\\sin^2(\frac{3\pi}{4}-\beta)=\frac{1}{2}\cos\beta +\sin\beta)^2=\frac{1}{2}(\cos^2\beta +\sin^2\beta+2\sin\beta\cos\beta\\=\frac{1}{2}(1+\sin2\beta)=\frac{1}{2}(1-\frac{1}{5}) = \frac{2}{5}\\$

Use $\cot^2x=\csc^2x-1=\frac{1}{\sin^2x}-1$

so

$\cot^2(\frac{3\pi}{4}-\beta)=\frac{1}{\sin^2(\frac{3\pi}{4}-\beta)}-1 = \frac{1}{\frac{2}{5}}-1=\frac{5}{2}-1=\frac{3}{2}$

7 0

2 years ago

Solve for j. -1j+1>2<br> Please help.

prohojiy [21]

You can use photomath for this

6 0

3 years ago

Factor completely: 16x2 − 81 A. (4x + 9) (4x − 9) B. 16x2 − 81 C. (4x + 9) (4x + 9) D. (4x2 + 9) (4x2 − 9)

ch4aika [34]

Answer:

A. (4x + 9) (4x − 9) is the correct answer.

6 0

3 years ago

Word Problem 3 Priscilla works 43 hours a week for eight weeks. If she makes $14.73 per hour, how much money did she make in the

VLD [36.1K]

Answer:

$5067,12

Step-by-step explanation:

14,73*43*8

4 0

2 years ago

Please help look at the screenshot

Tpy6a [65]

Answer:

Step-by-step explanation: 40 newtons to the right

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3 years ago

Read 2 more answers