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Lisa [10]
2 years ago
13

If 4.2km is 42cm on a map, what was the scale of the map?

Mathematics
2 answers:
Inessa05 [86]2 years ago
8 0

Answer: I need da points

Step-by-step explanation: I’m just like that sry

serious [3.7K]2 years ago
6 0

Answer:

Step-by-step explanation:

njjvsiljsdkjgklsnmxl kcml;kfjms;lf

hope this helped

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What is the value of Y
Keith_Richards [23]
76 degrees. Angle y is supplementary to angle “2x+20”.
4 0
3 years ago
Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge
PIT_PIT [208]

Answer:

42.69% of information is acquired by the student in two weeks.

Step-by-step explanation:

We are given the following in the question:

p = (100 -a)e^{-bt} + a

where a and b are constants.

a = 18\\b = 0.6

p tells us about the percentage of acquired knowledge that a person retains after t weeks.

We have to find the percentage of knowledge acquired in two week.

We put t = 2

p = (100 -18)e^{-(0.6)(2)} + 18\\p = 42.69

Thus, 42.69% of information is acquired by the student in two weeks.

5 0
3 years ago
I’m slow help me please
Vlada [557]
10 will be your answer because 4 x 5 divided by 2 is 10
8 0
3 years ago
What is the interquartile range of 45,60,40,90,60,50,75,120,90
puteri [66]
IQR = 40

1) Put the numbers in order: 40, 45, 50, 60, 60, 75, 90, 90, 120
2) Find the median: Median is 60 (the 2nd one)
3) Place parentheses around the numbers above and below the median. For easy identification of Q1 and Q3. (40, 45, 50, 60,) 60, (75, 90, 90, 120)
4) Find the Q1 and Q3. Q1 = median of the lower half of the data; Q3 = median of the higher half of the data. Q1 and Q3 have even sets so its median cannot be defined.
5) Had both sets contain odd sets, the median of Q1 is subtracted from the median of Q3 to get the IQR.

We can then use the Alternative definition of IQR.
IQR is the difference between the largest and smallest values in the middle 50% of a set data.

40, 45, 50, 60, 60, 75, 90, 90, 120

Middle 50% is 50, 60, 60, 75, 90; IQR = Largest value - smallest value;

IQR = 90 - 50 = 40



5 0
2 years ago
1/2x - 7 = 1/3(x-12) what is x?
sashaice [31]

Answer:

x = 18

Step-by-step explanation:

took test!!

7 0
3 years ago
Read 2 more answers
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