The exact value of cos(-120) equals

Mathematics

2 answers:

Svetach [21]3 years ago

8 0

Answer:

0.81418097052

Step-by-step explanation:

just put it in a calculator?

ludmilkaskok [199]3 years ago

3 0

cos(-120)= -1/2

nsbnxnn

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Isabella buys a computer that is on sale for 30% off the original price. The original price is $216 more than the sale price.

kakasveta [241]

Answer:

$720$

Step-by-step explanation:

Set the problem up as a proportion

$\frac{216}{x}= \frac{30}{100}$

cross multiply

$21600=30x$

divide both sides by 30

$720=x$

plz mark me brainliest. :)

7 0

3 years ago

What is m∠RST? I need help on this please thank youuu

kkurt [141]

It’s an isoceles triangle so 180-64=116degrees = the sum of the other two equal angles in the triangle QRP and so angle QRP is 116÷2=58degrees, angles QRP and SRT are vertically opposite so they’re equal. The triangle SRT is also isosceles so 180-58= 122degrees = the sum of the last two equal base angles (including RST that you want to find) So lastly do 122÷2= 61degrees = angle RST

5 0

3 years ago

What’s the probability?

son4ous [18]

Answer:

$\frac{1}{8}$