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vazorg [7]
3 years ago
13

(5.42x10^2)—(2.1x10^-1) simplify and solve in scientific notation and please show work

Mathematics
1 answer:
stich3 [128]3 years ago
5 0

542÷100×100-(21÷10)÷10

=542-0.21=541.79=5.4179×10²

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In order to conduct an experiment five subjects are randomly selected from a group of 48 subjects how many different groups of f
exis [7]

Answer:

1,712,304 ways

Step-by-step explanation:

This problem bothers on combination

Since we are to select 5 subjects from a pool of 48 subjects, the number of ways this can be done is expressed as;

48C5 = 48!/(48-5)!5!

48C5 = 48!/43!5!

48C5 = 48×47×46×45×44×43!/43!5!

48C5 = 48×47×46×45×44/5!

48C5 = 205,476,480/120

48C5 = 1,712,304

Hence this can be done in 1,712,304ways

3 0
3 years ago
Select the correct answer from each drop-down menu. Complete the statements about these similar pyramids. Two square pyramids A
Scrat [10]

The ratio of the heights of these pyramids is 3 : 1, the ratio of the base areas is 9 : 1 and the ratio of the volumes is 27 : 1.

<h3>What is ratio?</h3>

Ratio can be defined as a mathematical expression which denotes the proportion of two (2) or more physical quantities to one another and the total quantities.

The ratio of the heights of these pyramids is given by:

Ratio = Height of pyramid A : Height of pyramid B

Ratio = (3V/lw) : (V/lw)

Ratio = 3 : 1.

The ratio of the base areas of these pyramids is given by:

Ratio = Base area of pyramid A : Base area of pyramid B

Ratio = (3a)² : a²

Ratio = 9a : a

Ratio = 9 : 1.

The ratio of the volumes of these pyramids is given by:

Ratio = Volume of pyramid A : Volume of pyramid B

Ratio = (3l × 3w × 3h)/3 : (l × w × h)/3

Ratio = 27 : 1.

Read more on pyramid here: brainly.com/question/16315790

#SPJ1

8 0
2 years ago
If point E is between points D and F and DE = 27 and EF = 34, find DF.
Elenna [48]
It's 61 (Free points for me)
7 0
4 years ago
Read 2 more answers
Task 4:
Zarrin [17]

B i think i am sorry if it is not right but i am pretty sure i am right tho

6 0
3 years ago
1. What is the opposite of 6.87?
Mila [183]

Answer:

-6.87

Consider the opposite symbol

(Negative and Positive)

7 0
3 years ago
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