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LUCKY_DIMON [66]
3 years ago
8

Tell whether each statement is a proportion:

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
6 0

Answer:

1. Yes

2. No

3. No

4. No

5. Yes

Step-by-step explanation:

Do you mean equal proportion?

1. 3 : 9 = 6 : 18 TRUE because 3 : 9 = 1 : 3 and 6 : 18 = 1 : 3

2. 28 : 7 = 64 : 16 FALSE because they are just not related.

3. 95 : 100 = 17 : 20 FALSE because the closest they get are 19 : 20 ≠ 17 : 20

4. 60 : 80 = 14 : 16 FALSE because the closest they get are 60 : 80 = 6 : 8 and 14 : 16 = 7 : 8

5. 200 : 300 = 24 : 36 TRUE because 200 : 300 = 2 : 3 and 24 : 36 = 2 : 3

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44+88= __ (2+4)<br><br> 11<br> 6<br> 2<br> 22
DENIUS [597]
Dang I was just about to say 22
8 0
3 years ago
Read 2 more answers
A sample of size 20 from a normal distribution has sample mean 3.5 and sample variance 14.75. Find 90% confidence intervals for
aleksley [76]

Answer:

Variance =9.2983, 27.6927

Standard deviation = 3.0493, 5.2624

Step-by-step explanation:

n = 20

S = 14.75

X² = chisquare

N-1 = degree of freedom

Alpha = 0.1

Alpha/2 = 0.1/2 = 0.05

1-0.1/2 = 0.95

Using statistics table

X² 19,0.05 = 30.14

X² 19, 0.95 = 10.12

A. 19(14.75)/30.14 , 19(14 75)/10.12

= 9.2983, 27.6927 for the variance of the population

B. Standard deviation = square root of variance

= √9.2983, √27.6927

= 3.0493, 5.2624

Please use attachment for better understanding

5 0
3 years ago
Explain your answer !! <br> Have a nice day <br><br> Will give braisnlt
Stels [109]
The answer is B because in total you there are 15 bicycles and tricycles so b +t =15
Bicycles have 2 wheels and tricycles have 3 wheels so 2b + 3t = 45
6 0
3 years ago
What is an equation of the line that passes through the points (3,4) and (5,8)
algol [13]

Answer:

i think 5

Step-by-step explanation:

6 0
3 years ago
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Finish this 3,9,4,12,7,21,16
steposvetlana [31]
The pattern is that every 2 numbers are a pair, the first being any selected number, and the second number next to is the number times 3.

3 x 3 = 9
4 x 3 =12
7 x 3 = 21
Therefor we type 16 x 3 = 48

48 is your next number.
5 0
3 years ago
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