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3 years ago

Cos130° = _____ -cos50° cos50° cos(-50°)

Mathematics

2 answers:

klemol [59]3 years ago

6 0

Answer:

cos(-50°)

Step-by-step explanation:

Alinara [238K]3 years ago

6 0

Answer:

-cos50

Step-by-step explanation:

cos 130

cos pi-50

-cos 50

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3 years ago

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Find the midpoint of the line segment.

zheka24 [161]

Answer:

(2,-2)

Step-by-step explanation:

the midpoint formula is M( $\frac{x_{1} +x_{2} }{2}$ , $\frac{y_{1} +y_{2} }{2}$ )

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ANSWER (2,-2)

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4 years ago

please help me evaluate this. the answer is B but im not sure how to get the answer without using a calculator. please show step

iragen [17]

Answer:

b. 9/100

Step-by-step explanation:

It helps if you have memorized the cubes of small integers. Of course, the ones needed here are ...

3³ = 27

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The desired value can be simplified to ...

$\left(-\dfrac{1000}{27}\right)^{-2/3}=\left(-\sqrt[3]{\dfrac{3^3}{10^3}}\right)^2=\dfrac{(-3)^2}{10^2}=\dfrac{9}{100}$

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3 years ago

Jack recieved $600 for his birthday. If he saves it in a bank account with 8% interest compounded yearly, how much money will he

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so 21 - 13, the money will be invested for 8 years.

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