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Natali5045456 [20]
3 years ago
14

I don't understand #9

Mathematics
1 answer:
Margarita [4]3 years ago
4 0
They are not that large. (?)
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7j + 5 - 8k when j = 0.5 and k = 0.25
tekilochka [14]

Answer:

I have no clue

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which expression is equivalent to 3(4m - 5)?
77julia77 [94]

Answer:

D. 12m-15

Step-by-step explanation:

3(4m-5)=3*4m-3*5=12m-15

4 0
3 years ago
Which is the equation of the parabola?
Umnica [9.8K]

Answer: y=-\dfrac{1}{8}(x - 2)^2 - 3

<u>Step-by-step explanation:</u>

The vertex form of a parabola is: y = a(x - h)² + k    where

  • (h, k) is the vertex
  • a=\dfrac{1}{4p}  

NOTE: p is the distance from the vertex to the focus

The vertex (h, k) is (2, -3)

p=-2\quad \implies\quad a = \dfrac{1}{4(-2)}=-\dfrac{1}{8}

Insert those values into the vertex formula to get:

y=-\dfrac{1}{8}(x - 2)^2 - 3

4 0
3 years ago
Calculate the total with 6% sales tax and 18% tip for a dinner that costs $27.58
beks73 [17]
Do $27.58 x .06 (for the sales tax) which equals in total $1.65.
Then do $27.58 x .18 (for the tip) which equals $4.96 in total.
Later add the tip and tax together which you get $6.61,add that to $27.58 and you'll get $34.19 total adding the tax and tip
3 0
3 years ago
Can someone please tell me how to do these problems
kow [346]
These are so easy, you won't believe it !

A negative exponent only means

       "Put all of this in the denominator, and make the exponent positive."

So    (any number)^negative power =

                     1 / (the same number)^(the same power but not negative) .

The first few problems on that sheet:

1).  5^-3  =  1 / 5^3

2).  6^-10  =  1 / 6^10

3).  (-2)^-5  =  1 / (-2)^5

Got it ?    You can do the rest of them now in about 2 minutes. 
4 0
3 years ago
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