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cupoosta [38]
3 years ago
10

Determine the amplitude or period as requested. Amplitude of y=3 cos 1 2

Mathematics
1 answer:
tatiyna3 years ago
5 0

Answer:

The amplitude is 3

Step-by-step explanation:

Given

The right function is:

y = 3 \cos(\frac{1}{2}x)

Required

The amplitude

A sine function is represented as:

y =A \cos(Bx + C) + D

Where

Amplitude = |A|

By comparing:

y = 3 \cos(\frac{1}{2}x) and y =A \cos(Bx + C) + D

A= 3

So:

Amplitude = |3|

Amplitude = 3

<em>Hence, the amplitude is 3</em>

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A student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answer corre
Nikolay [14]

Answer: 16 questions

Step-by-step explanation:

To find how many problems the student correctly answered on the test, we can turn 80% into a fraction.

\frac{80}{100} =\frac{16}{20}

The student answered 16 questions correctly.

The value of (0.3)^4 is 0.0081.

Unless you mean 0.3*4, then it is 1.2.

3 0
3 years ago
Given that abcd ~Jklm. Find the value of x, y, and z​
Minchanka [31]

Answer:

x = 7.2

y = 10

z = 6

Step-by-step explanation:

Since ABCD ~ JKLM, therefore, the ratio of their corresponding sides would be equal. Thus:

JK/AB = KL/BC = LM/CD = JM/AD

Substitute

12/x = y/6 = 15/9 = 10/z

✔️Find x:

12/x = 15/9

12/x = 5/3

Cross multiply

x*5 = 3*12

5x = 36

x = 36/5

x = 7.2

✔️Find y:

y/6 = 15/9

y/6 = 5/3

Cross multiply

y*3 = 5*6

3y = 30

y = 30/3

y = 10

✔️Find z:

15/9 = 10/z

5/3 = 10/z

Cross multiply

5*z = 10*3

5z = 30

z = 30/5

z = 6

4 0
3 years ago
Bashir was out at a restaurant for dinner when the bill came. His dinner came to $32.
Vladimir [108]

Answer:

23%

Step-by-step explanation:

39.36-32=7.36

7.36/32=.23

23 percent

4 0
2 years ago
Evaluate -3x-7<br> When x = -3
mr_godi [17]

Answer:

2

Step-by-step explanation:

-3x-7(x=-3)

(-3)(-3)-7

Rewrite:

(-3*-3)-7

Now solve:

(-3*-3)=9\\9-7=2

2 is your answer.

6 0
3 years ago
4 What are the values of x that would cause the relation {(2,5), (x,8),
prohojiy [21]
U can use that order pair and it was make it not a function (2,8)
7 0
3 years ago
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