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aliya0001 [1]
3 years ago
8

The function f(x)=-3cos(3x+Pi/4) has ___ .

Mathematics
1 answer:
Furkat [3]3 years ago
3 0

Answer:

amplitude = 3

period = \frac{2\pi }{3}

Step-by-step explanation:

Comparing the equation with the general equation :

f(x) = A cos(Bx + c ) + D

Where :

A = amplitude

period = \frac{2\pi }{B}

D = vertical shift

Therefore : with the comparison :

amplitude = /-3/ = 3

period = \frac{2\pi }{3}

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Lisa sold 11 shirts for every 7 shirts Becky sold. If the girls sold 72 shirts in all, how many shirts did Becky sell?
Eva8 [605]

Answer: 28 shirts

Step-by-step explanation:

From the question, we are informed that Lisa sold 11 shirts for every 7 shirts Becky sold. This can be expressed in a fraction as:

Lisa = 11/(11 + 7) = 11/18

Becky = 7/(11 + 7) = 7/18

If the girls sold 72 shirts in all, the number of shirts sold by Becky will be:

= 7/18 × 72

= 7 × 4

= 28

8 0
3 years ago
Help guys I only have 18 minutes left!!!!!!
harkovskaia [24]

Given:

The equation of a circle is:

(x-3)^2+y^2=32

To find:

Center and the circumference of the circle.

Solution:

The standard form of a circle is:

(x-h)^2+(y-k)^2=r^2         ...(i)

Where, (h,k) is center and r is the radius.

We have,

(x-3)^2+y^2=32           ...(ii)

On comparing (i) and (ii), we get

h=3,y=0,r=\sqrt{32}

So, the center of the circle is (3,0) and the radius of the circle is \sqrt{32}.

Now, the circumference of the circle is:

C=2\pi r

C=2(3.14)(\sqrt{32})

C=35.525045

C\approx 35.5

Therefore, the circumference of the circle is about 35.5 units.

3 0
3 years ago
A number y is 3 times greater than a number x. Which equation shows this relationship
vladimir1956 [14]

Answer:

y = 3x

Step-by-step explanation:

y is 3 times greater than x. So to get Y you would have multiply x 3 times. 3x = 3 * x.

6 0
3 years ago
Please help me happy new years
vodka [1.7K]

1) The quotient is 6.

2) The quotient is 9/10.

Hope it helps!

4 0
3 years ago
Read 2 more answers
PLEASE HELP ME WITH THIS!!!
IrinaVladis [17]

Answer:

I think h is 20 I am not sure

8 0
3 years ago
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