3 years ago

Fine the class width

Mathematics

1 answer:

WITCHER [35]3 years ago

8 0

Answer:

class width is 5

Step-by-step explanation:

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there are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council? What

madam [21]

Out of every 11 students 7 were girls. Set up the following proportion.

11/7 = 77/x Cross multiply
11x = 7*77
x = 7*77/11
x = 49

49 of the student council members were girls.

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3 years ago

Q7Which statement is incorrect for the graph of thefunction y = -5 cosGcos( 3 (x – 3)) +62The period is 4.The amplitude is 3.The

guajiro [1.7K]

The given function is,

$y=-5\cos (\frac{\pi}{2}(x-3))+6$

The graph can be drawn as,

The period will be distance between two consequetive maximas,

$\text{Period}=1-(-3)=4$

Thus, period is correct.

The amplitude can be determined as,

$\begin{gathered} Amplitude=\frac{\max -\min }{2} \\ =\frac{11-1}{2} \\ =5 \end{gathered}$

Thus, amplitue is incorrect.

The range is,

$y\in\lbrack1,11\rbrack$

Thus, the range is correct.

The midline is,

$\begin{gathered} \text{midline}=\frac{\max +\min }{2} \\ =\frac{1+11}{2} \\ =6 \end{gathered}$

Thus, the midline is correct.

Thus, option (b) is the solution.

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1 year ago

Y=-4x y=x^2-12 solve the system of equations

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Answer:(-6,24) and (2,c8)

Step-by-step explanation:

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3 years ago

Can someone tell me What is 10% of 20

Andrej [43]

Answer:

Step-by-step explanation:

skskskskskskkskskskskskskksksks

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2 years ago

3a+a+2a-5a? Can someone give me the answer please? Ty

Shkiper50 [21]

Answer:

Step-by-step explanation:

=3a + a + 2a - 5a

=4a - 3a

= a

hope it helps u tate!

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3 years ago

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Fine the class width ​

Fine the class width