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3 years ago

Cos 4A - cos 4B = 8(cos A - cos B) (cos A +cos B) (cos A - sin B) (cos A + sin B)

Mathematics

1 answer:

sveta [45]3 years ago

3 0

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Help me solve C=AB+D for B.

Mars2501 [29]

C=AB+D
C-D=AB
C/A-D/A=B

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3 years ago

Mason randomly chooses a card from a standard deck of playing cards. What is the probability that it is not an ace, given it is

bogdanovich [222]

Answer:

there are 52 cards in a deck so the chance is a red card (or not a red card) is 26 out of 52.

Step-by-step explanation:

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2 years ago

Tommy has 5 jars of marbles. Each jar is 2/3 filled with marbles. If Tommy decided to combine the marbles completely fill the ja

antoniya [11.8K]

Answer:

Step-by-step explanation:

to find this answer we will then have to do 5 x 2/3

since we our multiplying by a fraction we will then have to change the fraction to a decimal.

2/3 = 0.6

this will then give us the equation of 5 x 0.6

this will give us the sum of 3 jars that had were able to be filled woth marbles.

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3 years ago

Find m angle QSRIf m angle TSQ=15x , m angle TSR=173^ , and m angle QSR=10x-2

Serggg [28]

${\color{red}{\huge{\underbrace{\overbrace{\mathfrak{\:\:\:\:\:\:\:꧁"Answer"꧂\:\:\: }}}}}}$

$\small\color{blak}{{\underline{\bold{ Find \:a X } } } }$

$\small\color{black}{{\underline{\bold{173°=15z+10x-2 } } } } \\ = 173 = 25x - 2 \\ = - 25x = - 2 - 173 \\ = - 25x - 175 \\ = \small\color{blue}{{{\boxed{\tt\red{} \:\:\:\:\:\:\:\:\:\: x=7\:\:\:\: }}}}$

$\small\color{blak}{{\underline{\bold{ Find\:a\:m$

$\small\color{blak}{{\underline{\bold{ 10(7)-2 } } } }\\=70-2\\=\small\color{red}{{{\boxed{\tt\red{} \:\:\:\:\:\:\:\:\:\: m$

$\Large\color{red}{{\underline{\mathfrak {{꧁"Carry\:on\: learning"꧂ }}}}}$

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3 years ago

The length of a rectangle is equal to three times it’s widt. If the perimeter is equal to 96 feet, what is the length of the rec

exis [7]

Answer:

12 feet

Step-by-step explanation:

If we use a rectangle. there would be 4 sides the length we can represent as x and the width would result as 3x. If we use the perimeter formula, we would get 8x. 8x would equal 96, the perimeter.

8x= 96

x= 12

The length would be 12

Hope this helped!! :D

4 0

3 years ago