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3 years ago

11

the sequence 15,30,45,60 look like 1,2,3,4...except each term is 15 times as large. so, the formula is 15n, where n represents t

he position of a term in the sequence. check the first four terms

1 answer:

DerKrebs [107]3 years ago

5 0

15*1=15
15*2=30
15*3=45
15*4=60

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15. Sofie bought a desk for $45 that was

Alchen [17]

Answer:

10%

Step-by-step explanation:

50+50=100

45+45=90

100-90=10

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3 years ago

The class sizes of the introductory psychology courses at a college are shown below 121,134,106,93,149,130,119,128 the college a

frozen [14]

Center : Mean Before the introduction of the new course, center = average(121,134,106,93,149,130,119,128) = 122.5 After the introduction of the new course, center = average(121,134,106,93,149,130,119,128,45) = 113.9 The center has moved to the left (if plotted in a graph) because of the low intake for the new course. Spread before introduction of the new course : Arrange the numbers in ascending order: (93, 106,119, 121), (128, 130,134, 149) Q1=median(93,106,119,121) = 112.5 Q3=median(128,130,134,149) = 132 Spread = Interquartile range = Q3-Q1 = 19.5 After addition of the new course,

(45,93, 106,119,) 121, (128, 130,134, 149)
Q1=median(45,93,106,119)=99.5
Q3=median (128, 130,134, 149)= 132
Spread = Interquartile range = 132-99.5 =32.5
We see that the spread has increased after the addition of the new course.

3 0

3 years ago

Read 2 more answers

If y varies inversely as x, when y=20 and x=2 find the equation for y. then, find y when x=4

Tema [17]

Answer:

the equation for y=20=1/2

Step-by-step explanation:

y=1/4

y=0.25

3 0

3 years ago

Which of these is usually true of a convenience sample?

Sav [38]

I think is d that what i tink

8 0

3 years ago

Three even numbers sum up to 252. the smallest is half the largest and the middle number is 3/4 the largest. what are the three

Mnenie [13.5K]

Let the largest number be x:
smallest number=1/2x
middle number=3/4x
total sum of the numbers is:
x+1/2x+3/4x=252
9/4x=252
solving for x we get
x=252×4/9
x=112
thus the largest number is 112
middle number=3/4*112=84
smallest number=1/2×112=56
Answer: 56,84,112

3 0

4 years ago