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docker41 [41]
3 years ago
13

Can some one help me i have no idea how to do this

Mathematics
1 answer:
pashok25 [27]3 years ago
6 0

Answer:

k=-7

Step-by-step explanation:

Okay,

2/7k-3/8=-19/8

       +3/8 +3/8

--------------------------

   2/7k=   -2

   -------    -------

     2/7       2/7

k=-7

To check do 2/7(-7) -3/8

                         -2 -3/8

and u get -2 3/8 but then u do 8*2= -16+3= 19

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I don’t quite understand this problem could someone help me please
ale4655 [162]

Answer:

\frac{7\sqrt{65}}{65}

Step-by-step explanation:

Cosine is the ratio of the side adjacent to the angle and the right triangle hypotenuse.

cos B = \frac{7}{\sqrt{65}} = \frac{7\sqrt{65}}{65}

3 0
2 years ago
What is equivalent <br> to 2x-7(6)
trasher [3.6K]

-40 i think.............. im not positive but i did my best

6 0
3 years ago
Leo has already taken 1 page of notes on his own, and he will take 1 page during each hour
sattari [20]

Answer:

49 Hours

Step-by-step explanation:

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Hope this helps!

8 0
2 years ago
$10,000 at an annual rate of 7%, compounded semi-annually, for 2 years
forsale [732]

Answer:

\$13,107.96

Step-by-step explanation:

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Therefore, we can set up the following equation to find the new balance after 2 years:

\text{New balanace}=10,000\text{ (old balance)}\cdot 1.07\cdot 1.07\cdot 1.07\cdot 1.07,\\\text{New balanace}=10,000\cdot 1.07^4=\boxed{\$13,107.96}

8 0
2 years ago
The discriminant finds the
mafiozo [28]

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4 0
2 years ago
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