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fomenos
3 years ago
14

Carisa predicted she answered 9 questions correctly out of 10 on a test. She actually got 8 answers correct. By what percent was

Carisa​'s prediction​ off?
Mathematics
1 answer:
iren [92.7K]3 years ago
7 0
The prediction was 10% off
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If x / 3 equals 6 then x equals
sleet_krkn [62]

Answer: X = 18

Step-by-step explanation:

Crossmultiply

8 0
3 years ago
The number of bacteria growing in an incubation culture increases with time according to n left parenthesis t right parenthesis
Anon25 [30]
For this case we have the following function:
 n (t) = 2400 * (5) ^ t 
 For n (t) = 60000 we have:
 60000 = 2400 * (5) ^ t
 We clear the value of t.
 For this we use the logarithm:
 (5) ^ t = 60000/2400
 log5 ((5) ^ t) = log5 (60000/2400)
 t = log5 (60000/2400)
 t = 2 days
 Answer:
 
the number of bacteria in the culture will be 60 comma 000 after:
 
t = 2 days
5 0
3 years ago
Alexandra paid $7 to park her car for 3 hours at the parking garage. The garage charges an hourly parking rate.
soldi70 [24.7K]
2.333p=c
i am not sure really what you want but
8 0
3 years ago
Read 2 more answers
Sue drank 2/5 of her water bottle and sally drank 4/10 of her water bottle how much water did both girls drank?
stealth61 [152]

well, clearly the LCD from the denominators of 5 and 10 is just 10, thus

\bf \stackrel{\textit{Sue}}{\cfrac{2}{5}}+\stackrel{\textit{Sally}}{\cfrac{4}{10}}\implies \stackrel{\textit{LCD of 10}}{\cfrac{(2)2~~+~~(1)4}{10}}\implies \cfrac{2+4}{10}\implies \cfrac{6}{10}\implies \stackrel{\textit{simplified}}{\cfrac{3}{5}}

3 0
3 years ago
What is the solution for <br> 10+2w&gt;=22 or 5w-8&gt;-12
Marina CMI [18]

Answer:

no solution

Step-by-step explanation:

10+2w>=22 or 5w-8>-12

10-2w>=22 or (5w-2w)-8>-12

10>=22 or 3w+8>12

18>=22 or 3w>12

18/3>=22 or 3w/3>12

6>=22 or w>12

3 0
2 years ago
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