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Marat540 [252]
3 years ago
12

−k−(−8k) Combining like terms im confused!

Mathematics
2 answers:
Grace [21]3 years ago
8 0

<em>ANSWER:</em>

<h2>7k</h2>

<em>STEP:</em>

Add -k and 8k. If you don't know why, since there is two "-". Two of those sign mean to add. And negative plus a positive is negative or positive. Or, you can just do 8k-1k. That is the same. You'll get 7k.

melisa1 [442]3 years ago
5 0

-k-(-8k)

= -k + 8k (two negatives equal one positive)

= 8k-k (flip it around because of the commutative property)

=7k (basic subtraction)

I really hope that helped :)

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Sellus
igor_vitrenko [27]

Answer:

3.9

Step-by-step explanation:

Given the data:

Payout ($) (x) : 0 2 4 8 10

Probability p(x) : 0.35 0.2 0.1 0.2 0.15

The expected winning ; E(X) = Σ(x * p(x))

Σ(x * p(x)) = (0*0.35)+(2*0.2)+(4*0.1)+(8*0.2)+(10*0.15)

= 0 + 0.4 + 0.4 + 1.6 + 1.5

= 3.9

8 0
3 years ago
Whats 20,000,000x - 3 =
Amiraneli [1.4K]

Answer:

6666666.667 equals x

Step-by-step explanation:

take the 3 to the other side- doin that is became positive

them you divide to find x

4 0
3 years ago
Simplify to create an equivalent expression. 2(−n−3)−7(5+2n)
scoray [572]
First you distribute...
-2n - 6 - 35 - 14n
Then you simplify...
-16n - 41
Done
5 0
3 years ago
What is the slope of a line that is perpendicular to the line whose equation is 7x−3y=10?
Sonja [21]

Since this equation is already in standard form, there is no need to convert it. Standard form is Ax + By = C. In this equation, 7 = A, 3 = B, and 10 = C. From standard form, Ax + By = C equals negative A over B.

7x + 3y = 10

↓

\displaystyle\ m= \frac{-7}{-3}

Then you'd simplify.

\displaystyle\ m=\frac{7}{3}

The slope cannot be simplified any more, so this would be the final answer.

|

|

<em>- Marlon Nunez</em>

7 0
3 years ago
Find the distance between the points (4,3) and (0,6)
lidiya [134]

Answer:

y

=

m

x

+

b

in order to solve for  

b

. Then, plug in known values.

y

=

0.6

x

+

0.6

Step-by-step explanation:

is this the answer u were looking for?

5 0
2 years ago
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