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attashe74 [19]
3 years ago
12

Pls help! TIMED test!​

Mathematics
2 answers:
Ivenika [448]3 years ago
5 0

Answer:

y=-4

Step-by-step explanation:

f(-1)=3(-1)-1

f(-1)=-3-1

f(-1)=-4

enyata [817]3 years ago
4 0

Answer:

2

Step-by-step explanation:

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Nana76 [90]

Answer: x = -1, -13

Step-by-step explanation:

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If y=a sin 3x+ b cos 3x and <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bd%5E%7B2%7D%20y%20%7D%7Bdx%5E%7B2%7D%20%7D" id="TexFormu
Black_prince [1.1K]

Step-by-step explanation:

You have to do first and second derivatives :

y = a sin 3x + b cos 3x

dy/dx = 3a cos 3x - 3b sin 3x

d²y/dx² = - 9a sin 3x - 9b cos 3x

Next, you have to compare it :

let d²y/dx² = ky,

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Therefore, k is equals to 9.

3 0
2 years ago
Jamal and Sean plan to make T-shirts to sell at a fair. Jamal plans to make 6 T-shirts
Butoxors [25]

Answer:

Jamal will have made 12 more T-shirts than Sean on the 6th day.

Step-by-step explanation:

1 day for Jamal - 6 T-shirts.                                                                                        1 day for Sean - 4 T-shirts.                                                                                               2 day for Jamal - 12 T-shirts.                                                                                                  2 day for Sean - 8 T-shirts.                                                                                                     3 day for Jamal - 18 T-shirts.                                                                                              3 day for Sean - 12 T-shirts.                                                                                               4 day for Jamal - 24 T-shirts.                                                                                                  4 day for Sean - 16 T-shirts.                                                                                                   5 day for Jamal - 30 T-shirts.                                                                                                5 day for Sean - 20 T-shirts.                                                                                             6 day for Jamal - 36 T-shirts.                                                                                                   6 day for Sean - 24 T-shirts.                                                                                           Number between 24 and 36 = 12.

3 0
2 years ago
What is 39% of 200?<br> i already know it’s 78, i just need a explanation of how i got it.
spayn [35]

Answer:

200 x .39

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200 x .39= 78

6 0
3 years ago
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Solve the system of linear equations in two variables by elimination or substitution.
taurus [48]

Answer:

( \frac{1}{2}, 0 )

Step-by-step explanation:

Given the 2 equations

4x + 3y = 2 → (1)

2x - 3y = 1 → (2)

Adding (1) and (2) term by term will eliminate the y- term, that is

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3y = 0 ⇒ y = 0

Solution is ( \frac{1}{2}, 0 )

8 0
3 years ago
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