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2 years ago

Which transformation causes the described change in the graph of the function y = cos x?

Mathematics

2 answers:

Gala2k [10]2 years ago

5 0

Answer:

See image.

Step-by-step explanation:

If there is a whole number multiplied by the x, its a horizontal shrink.

If there is a whole number multiplied by the whole function, its a vertical stretch.

If there is a fraction multiplied by the x, its a horizontal stretch.

If there is a fraction multiplied by the whole function, its a vertical shrink.

tia_tia [17]2 years ago

4 0

A: a horizontal shrink would be caused by cos 3x.
B: a vertical stretch would be caused by 3 cos x
C: a horizontal stretch would be caused by cos (1/3)x
D: a vertical shrink would be caused by 1/3 cos x.

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a store sells 2 pounds of tomatoes for $7. Write an equation that represents the cost, c, for t pounds of tomatoes

algol13

Answer:

t pounds = 3.5 (or just t = 3.5c)

Step-by-step explanation:

2 pounds of tomatos for 7$ means that one pound of tomatos for 3.5$. Therefore, t pounds = 3.5 c

5 0

2 years ago

Francesca spent 25 minutes on the internet yesterday if this is 5/6 of the time she spent on the computer,how long did she spend

disa [49]

All together Francesca spent 30 mins on the computer.

25/5=5.

If you add another 5 then you get the whole. So, 25+5=30.

Only 5 minutes of the time she spent on the computer was off the internet.

6 0

2 years ago

A video game randomly chooses your car color and type. The probability of getting a red car is 0.20, and the probability of gett

pishuonlain [190]

Answer: Option 'D' is correct.

Step-by-step explanation:

Since we have given that

Event A: You get a red car

and

$P(A)=0.20$

Similarly,

Event B: You get a convertible

and

$P(B)=0.40$

So, if A and B are independent , then they must satisfy,

$P(A).P(B)=P(A\cap B)$

So,

$P(A\cap B)=0.4\times 0.2=0.08$

Hence, Option 'D' is correct, which states that the probability of getting a red convertible is 0.08.

7 0

2 years ago

Luke is planning to lay two decorative pieces of wood across the 12-inch by 24-inch rectangular glass centerpiece of a cabinet.

Snowcat [4.5K]

What you are looking for is the hypotenuse of a right triangle.
If you have a 12 x 24 rectangle, these would be the sides of the triangle and we would use Pythagorean Theorem to find the hypotenuse.
a^2 + b^2 = c^2
12^2 + 24^2 = c^2
144 + 576 = c^2
720 = c^2
take the square root of both sides
c = sqrt(720)
c = 26.8 inches is the approximate answer.
I don't know what your choices are but one should be close to this answer.

6 0

1 year ago

Read 2 more answers

Triangle PQR is dilated by a scale factor of 1.5 to form triangle P′Q′R′. This triangle is then dilated by a scale factor of 2 t

Ghella [55]

Answer: The correct option is (D) P″(9, -12) and Q″(15, -3).

Step-by-step explanation: Given that triangle PQR is dilated by a scale factor of 1.5 to form triangle P′Q′R′. This triangle is then dilated by a scale factor of 2 to form triangle P″Q″R″.

The co-ordinates of vertices P and Q are (3, -4) and (5, -1) respectively.

We are to find the co-ordinates of the vertices P″ and Q″.

Case I : ΔPQR dilated to ΔP'Q'R'

The co-ordinates of P' and Q' are given by

$P'(3\times 1.5, -4\times 1.5)=P'(4.5, -6),\\\\Q'(5\times 1.5, -1\times 1.5)=Q'(7.5, -1.5).$