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LenaWriter [7]
2 years ago
11

9.Which of the following are used to represent unknown quantities in algebra? A) Upper case letters B) Lower case letters C) Onl

y letters a and x D)None of the above​
Mathematics
2 answers:
3241004551 [841]2 years ago
6 0
Abgshsbshebsvjsbajjabshajanbsjsbsbnajajajs
bearhunter [10]2 years ago
3 0

Answer:

B - Lower case letters

Step-by-step explanation:

In algebra, unknown quantities are usually represented as lower-case letters like x, y, i, j, k etc.

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Answer: 0.125 mg per half minute

Step-by-step explanation:

15mg per hour can be written as 15mg/h

To find out how many mg of medication are delivered per half minute you can convert from hour to minutes

There are 60 minutes in 1 hour, so you can use the conversion factor (1h/60 min) and multiply the expression by it

15 mg/h (1h/60min) = 0.25 mg/min

But the question is per half minute so you have to multiply and divide the previous expression by 0.5 (To obtain 0.5 min in the denominator, which is half minute)

Then,

(0.25 mg/min ) (0.5/0.5) = 0.125 mg/ 0.5 min (0.125 mg per half minute)

8 0
3 years ago
I need help pls asap
lilavasa [31]

Answer:

Step-by-step explanation:

first we are told that side and ae and a f are the same

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3 years ago
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