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densk [106]
3 years ago
10

9 – 2k = 25 what is k

Mathematics
2 answers:
worty [1.4K]3 years ago
8 0

Answer:

k = - 8

Step-by-step explanation:

Subtract 9 from both sides to get the constants on one side and the variables on the other

9 - 2k = 25

- 2k = 25 - 9

Simplify

- 2k = 16

Divide by -2 on both sides to isolate the variable, then simplify once more.

- 2k/ -2 = 16/ -2

k = 16/ -2

k = -8

Gnom [1K]3 years ago
7 0

Answer:

      k = -8

Step-by-step explanation:

9 – 2k = 25

   - 2k  = 25 - 9

    -2k = 16

         k = 16 / -2

         k = -8

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Lorico [155]
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3 years ago
Find the unit vector in the direction of (4,-4). Write your answer in component form. Do not approximate any numbers in your ans
aniked [119]

Answer:

(\frac{1}{\sqrt{2} }, \frac{-1}{\sqrt{2} }  )

Step-by-step explanation:

The unit vector for a nonzero vector, say u, in the direction of u is given by:

û = \frac{u}{|u|}             ---------------(i)

Where;

|u| = magnitude of vector u

From the question;

u = (4, -4)

First let's calculate the magnitude of u as follows;

|u| = \sqrt{(4)^2 + (-4)^2}

|u| = \sqrt{16 + 16}

|u| = \sqrt{32} = 4\sqrt{2}

Now, substitute u and |u| into equation (i) as follows;

û = \frac{(4, -4)}{4\sqrt{2} }

û = (\frac{4}{4\sqrt{2} }, \frac{-4}{4\sqrt{2} }  )

û = (\frac{1}{\sqrt{2} }, \frac{-1}{\sqrt{2} }  )

Therefore, the unit vector is (\frac{1}{\sqrt{2} }, \frac{-1}{\sqrt{2} }  )

7 0
3 years ago
Does anybody know how to do this?
s344n2d4d5 [400]
I'm not sure what the question is.  It looks like some of it may have been cut off or there is information missing?
8 0
3 years ago
FRACTIONS
Vladimir79 [104]

The complete fraction is 24/30=4/5

<h3>How to create an equivalent fraction?</h3>

The expression is given as:

blank over 30=4/5

Represent the blank with x.

So, we have:

x/30=4/5

Multiply both sides by 30

x = 30 * 4/5

Evaluate

x = 24

Substitute x = 24 in x/30=4/5

24/30=4/5

Hence, the complete fraction is 24/30=4/5

Read more about fractions at:

brainly.com/question/10354322

#SPJ1

3 0
2 years ago
HELPPPPP MEEEEE I WIIILLLLL GIVVVEEE BBRRRAIINNNNNLLLLIEEESTTTT!!!!! I pay $2.25 per gallon of gasIf I get a drink they take $.5
kondor19780726 [428]

Answer:

$17

Step-by-step explanation:

10 x 2.25 = 22.5

10 x .50 = 5

22.5 -5 = 17

I think this is correct.  Sorry if it isn't though!!!!!!

3 0
3 years ago
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