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steposvetlana [31]
3 years ago
15

Which option is an example of an experiment?

Mathematics
1 answer:
son4ous [18]3 years ago
7 0

option D recording the reaction time of participants in a study who were asked to press a button age as soon as they see a certain picture on a screen ASAP please

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Simplify (−4k4+14+3k2)+(−3k4−14k2−8). Write answer in standard form.
marissa [1.9K]

Answer:

−7k^4−11k^2+6

Step-by-step explanation:

−4k^4+14+3k^2−3k^4−14k^2−8

(−4k^4+−3k^4)+(3k^2+−14k^2)+(14+−8)

−7k^4−11k^2+6

...

8 0
3 years ago
Elvira is comparing prices between two different suppliers of fresh lettuce. Val’s Veggies charges $250 for delivery plus $1.50
ad-work [718]

Answer:

61 bags of lettuce

Step-by-step explanation:

Let's create two equations representing the cost of bags of lettuce:

Val's Veggies: 250 + 1.50x = V

Sally's Salads: 100 + 4.00x = S

If you buy 60 bags of lettuce from either store, the answers will be equivalent:

If x = 60

250 + 1.50x = V

250 + 90 = V

340 = V

100 + 4.00x = S

100 + 240 = S

340 = S

Now that both equations are equivalent, all we need to do to tip the balance and make Val's Veggies cheaper is purchase one more bag of lettuce:

x = 61

250 + 1.50x = V

250 + 91.50 = V

341.50 = V

100 + 4.00x = S

100 + 244 = S

344 = S

Since V represents the price of a bag of lettuce at Val's Veggies and V is now less than S (Sally's Salads), Val's Veggies is now the cheaper option.

Therefore, 61 bags of lettuce must be purchased in order for Val's Veggies to be the cheaper option.

7 0
3 years ago
Please helpppp!!!!!!!!!
AnnZ [28]

Answer:

you need to simplify them like 2n+6 simplifird if 2.(n+3)

Step-by-step explanation:

8 0
3 years ago
Find x and y in <br>2x+2y=12<br>4x_4y=13
dlinn [17]
For the first one the answer is y=-1x+6 which means x=-1 and y=6
6 0
3 years ago
Read 2 more answers
I’m pretty confused so a 15 pointer
Bingel [31]
I don’t think f would have any value in this equation and f would represent 1 zero??
4 0
3 years ago
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