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3 years ago

10

A chess club with 80 members is electing a new president. Elsa received 64 votes. What percentage of the club members voted for

Elsa?

1 answer:

hjlf3 years ago

5 0

Answer:

80%

Step-by-step explanation:

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Find all solutions of the equation in the interval [0, 2pi).

mina [271]

Answer:

x = 0 , π

Step-by-step explanation:

$-4 \sin x = 1 - cos^2 x$

Rewrite it by using the identity $\sin^2x + \cos^2x = 1$

$=> -4\sin x = \sin^2x$

Add 4sin x to both the sides.

$=> -4\sin x + 4\sin x = sin^2x + 4\sin x$

$=> \sin^2x + 4\sin x = 0$

Take sin x common from the expression in L.H.S.

$=> \sin x(\sin x + 4)=0$

Here , we can get two more equations to find x.

1) $\sin x(\sin x + 4)=0$

Divide both the sides by sin x

$=> \frac{\sin x(\sin x + 4)}{\sin x} = \frac{0}{\sin x}$

$=> \sin x + 4 = 0$

Substract 4 from both the sides.

$=> \sin x + 4 - 4 = 0 - 4$

$=> \sin x = -4$

$=> x = No \; Solution$

2) $\sin x(\sin x + 4)=0$

Divide both the sides by (sin x + 4)

$=> \frac{\sin x(\sin x + 4)}{\sin x + 4} = \frac{0}{\sin x + 4}$

$=> \sin x = 0$

$=> x = 0 \; , \pi$ over interval [0 , 2π).

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3 years ago

Line Plots 4th grade

ollegr [7]

Answer:

4. 10

5. B

6. False, true, true, false, and true.

7. 3 1/2 and 7 1/2

Step-by-step explanation:

I hope this helps ^-^

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Insert a rational number between 3 and 3.5

lorasvet [3.4K]

A rational number is any number that can be made into a fraction and is either repeating or stops when in decimal form.

Rational numbers between 3 and 3.5 would be 10/3 (3.33 repeating), and 13/4 (3.25).

Hope this helps!! :)

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3 years ago

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Please help me with this problem worth 30 point

Rzqust [24]

$215, $107.5, $322.50

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Please help solve ASAP (40 points)

Angelina_Jolie [31]

Answer:

Maximum value is 10 at (0,10) Minimum value is -2 at (5,-2)

Step-by-step explanation:

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3 years ago