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IceJOKER [234]
3 years ago
10

Cd can also be called dc

Mathematics
1 answer:
Montano1993 [528]3 years ago
4 0
Yes it can be , in this case it doesn't matter which way it goes
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Which of the following results in the difference of two squares? (answer choices below)
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Answer:

A

Step-by-step explanation:

Use signs inside the brackets as a guide

16×^2 - 25y^2

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The answer to this should be 101!
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2 years ago
Hey:) please help me on this one: Evaluate the function f(x) = 0.4x^2 - 3x - 8 for the value x = -2​
Ksivusya [100]

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Step-by-step explanation:

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3 years ago
Simplify 2 √3 times 3 √15<br> Also simplify 3 √5 times √5 <br> Please help
stira [4]

answer one would be 18 square root of 5

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Step-by-step explanation:

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3 years ago
Write one sine and one cosine equation for each graph below.
pychu [463]

Answer:

Q13. y = sin(2x – π/2); y = - 2cos2x  

Q14. y = 2sin2x -1; y = -2cos(2x – π/2) -1

Step-by-step explanation:

Question 13

(A) Sine function

y = a sin[b(x - h)] + k

y = a sin(bx - bh) + k; bh = phase shift

(1) Amp = 1; a = 1

(2) The graph is symmetrical about the x-axis. k = 0.

(3) Per = π. b = 2

(4) Phase shift = π/2.  

2h =π/2

h = π/4

The equation is

y = sin[2(x – π/4)} or

y = sin(2x – π/2)

B. Cosine function

y = a cos[b(x - h)] + k

y = a cos(bx - bh) + k; bh = phase shift

(1) Amp = 1; a = 1

(2) The graph is symmetrical about the x-axis. k = 0.

(3) Per = π. b = 2

(4) Reflected across x-axis, y ⟶ -y

The equation is y = - 2cos2x  

Question 14

(A) Sine function

(1) Amp = 2; a = 2

(2) Shifted down 1; k = -1

(3) Per = π; b = 2

(4) Phase shift = 0; h = 0

The equation is y = 2sin2x -1

(B) Cosine function

a = 2, b = -1; b = 2

Phase shift = π/2; h = π/4

The equation is

y = -2cos[2(x – π/4)] – 1 or

y = -2cos(2x – π/2) - 1

6 0
3 years ago
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