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3 years ago

Which of thses is our number system based on A. 2s B. 10s C. 20s D. 100s

Mathematics

1 answer:

Nikitich [7]3 years ago

7 0

C. 20s!!!!!!!!!!!!!!!!!!!

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I really need help.

Harman [31]

Answer:

an equivalent fraction for 1/2 is 5/10 an equivalent fraction for 1/3 is 3/9 hope this helps

Step-by-step explanation:

6 0

4 years ago

Read 2 more answers

What are 3 examples or area

Tamiku [17]

1) L×W=A

2) 6×3=24

3) 8×8=64

4) 2×90 =180

8 0

3 years ago

Most dermatologists recommend using sunscreens that have a Sun Protection Factor (SPF) of at least 30. One of the authors wanted

Vikentia [17]

Answer:

95% confidence interval = ( 28.9485, 40.1515 )

Step-by-step explanation:

sample size( n ) = 52

mean value ( x )= 34.55

std ( б ) = 20.12

H0 : <em>u </em>≤ 30

Ha : u > 30 ( claim )

95% confidence interval for mean SPF level ( df = 51 )

= mean value ± $(2.0076 + \frac{20.12}{\sqrt{52} } )$

95% confidence interval = ( 28.9485, 40.1515 )

we cannot reject H0

4 0

3 years ago

Change 33/4 to a mixed number

BaLLatris [955]

Answer:

Step-by-step explanation:

33/4 already reduced (simplified) Improper fraction, rewrite it as a mixed number: 33 ÷ 4 = 8 and remainder = 1 => 33/4 = (8 × 4 + 1)/4 = 8 + 1/4 = 8 1/4

5 0

3 years ago

Read 2 more answers

*** WILL MARK BRAINLIEST

Helen [10]

The common ratio (R) is -3.

-2 times -3 is 6.
6 times -3 is -18.
-18 times -3 is 54.

R=-3.
This is a geometric sequence.

6 0

4 years ago