3 years ago

What is the exact value of sin(345degree)?

Mathematics

1 answer:

stich3 [128]3 years ago

4 0

Answer:

Step by-step explanation:

cos(90-345)

cos(-255)

I know it doesnt match exactly, but it should give you what you need in toder to get the right answer. Hope this helps!

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If y varies directly as x and y = 3 when x = - 9, then find x when y = 5.

Rus_ich [418]

Answer:

d. - 15

Step-by-step explanation:

The equation for direct variation is

y = kx

We know y =3 when x = -9

3 = k(-9)

Divide by -9

3/-9 = -9k/-9

-1/3 = k

The equation is then

y = -1/3 x

We know y = 5

5 = -1/3 x

Multiply each side by -3

-3*5 = -3*-1/3x

-15 = x

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How do you solve the equation by factoring or square roots<br> Ex: x^2-4x=0

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$x^2-4x=0\\
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$3x^2=48\\
x^2=16\\
x=-4 \vee x=4\\\\
\hbox{or}\\\\
3x^2-48=0\\
3(x^2-16)=0\\
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4 years ago

A number x less than 3 is negative 10

vivado [14]

Answer: Yes

Step-by-step explanation:

negative numbers count as less than 3

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Answer:

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(t)-120-75-60

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