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zhannawk [14.2K]
3 years ago
5

if the rat moves through the maze randomly how many out of 100 attempts would you expect Romeo to end up in room A​

Mathematics
1 answer:
DochEvi [55]3 years ago
5 0
How many rooms are there ?
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Simplify 5(9+3) - 4x3 =
kiruha [24]

Answer:

48

Step-by-step explanation:

5(9) + 5(3) - 4(3)

45+15-12

60-12

=48

7 0
3 years ago
Read 2 more answers
Chris runs 6 miles in 50 minutes. At the same rate, how many miles would he run in 35 minutes?
Nataly_w [17]
You could either find how far Chris can run in 60 minutes, or write an equation of ratios:

    x            35 min
--------- = --------------
 6 mi          50 min

Solving for x:  50x = 210;     x = 4.2 miles (answer)
4 0
3 years ago
A study was recently conducted to estimate the mean cholesterol for adult males over the age of 55 years. From a random sample o
Komok [63]

Answer:  Correct critical value = 2.2622

Step-by-step explanation:

Confidence interval for population mean when population standard deviation is unknown:

\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}} , where \overline{x} = sample mean, n= sample size, s= sample standard deviation, t_{\alpha/2} = two-tailed t value.

As per given: n= 10

degree of freedom : df = n-1=9

\overline{x}=242.6\\\\s=73.33\\\\\alpha=5\%=0.05

Critical t-value : t_{\alpha/2,df}=t_{0.05/2,9}=t_{0.025,9}=2.2622

So, the 95 percent confidence interval estimate for the​ mean :

242.6\pm (2.2622)\dfrac{73.33}{\sqrt{10}}\\\\=242.6\pm (2.2622)(23.19)\\\\\approx242.6\pm52.46\\\\=(242.6-52.46,\ 242.6+52.46)\\\\=(190.14,\ 295.06)

The 95 percent confidence interval estimate for the​ mean:(190.14, 295.06)

8 0
3 years ago
Can someone help me with this problem pls
Talja [164]
A. Slope = 2
b. Slope = 2/3 or 0.66

(Slope = change in y / change in x)
8 0
3 years ago
Please help me I’ll mark brainliest:)
Archy [21]

Answer:

x = 4

Step-by-step explanation:

6 0
3 years ago
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