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zalisa [80]
3 years ago
6

Hi can anybody tell me the answer please

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
6 0

Answer:

x = 14 cm

Step-by-step explanation:

200 000 cm = 2 km

1 cm ............... 2km

x cm ..............28 km

x = 28*1/2 = 28/2 = 14 cm

Natalka [10]3 years ago
5 0

Answer:

14cm

Step-by-step explanation:

1 : 200000 \\ 1cm : 200000cm \\  \\ 28km = 28000m \\ 28000m = 2800000cm \\  \\ 1 : 200000 \\ x : 2800000 \\ cross \: multiple \\  \\ 200000x = 1 \times 2800000 \\ 200000x = 2800000 \\  \frac{200000x}{200000}  =  \frac{2800000}{200000}  \\ x = 14cm

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7. How many different ways can a class of 22 second graders line up to go to lunch?
pogonyaev

Answer:

The number of different ways are 22! or 1,124,000,727,777,607,680,000.

Step-by-step explanation:

Consider the provided information.

We need to determine the number of different ways can a class of 22 second graders line up.

We need to select 22 second graders while taking 22 at a time.

So use the permutation formula: ^{n}P_{n}

Substitute n=22 and simplify.

^{22}P_{22}=\frac{22!}{(22-22)!}\\22!=1,124,000,727,777,607,680,000

Hence, the number of different ways are 22! or 1,124,000,727,777,607,680,000.

6 0
3 years ago
Please help me answer the question
Veronika [31]

Answer:

fourth option

Step-by-step explanation:

Common difference is given by difference of two consecutive term

d = nth term - (n-1)th term

______________________________________

for all the  series lets take second term as nth term

and first term as (n-1)th term

_________________________________________

for first series

n th term = -3 1/2 = -3.5

(n-1)th term = -5

therefore

d= -3.5 -(-5) = -3.5 +5 = 1.5

______________________________________

for second series

n th term = 4 1/2 = 4.5

(n-1)th term = 2 1/2 = 2.5

therefore

d= 4.5 -(2.5) =2

_________________________

for third series

n th term = 3

(n-1)th term =1.5

therefore

d= 3 - 1.5 = 1.5

__________________________________

for fourth series

n th term = -1.5

(n-1)th term = -4

therefore

d= -1.5 -(-4) = -1.5 + 4 = 2.5 = 2 1/2

___________________________________

Thus, based on above solution option four has common difference of 2 1/2

3 0
3 years ago
4
saul85 [17]
4x10(6)=4,000,000 1x10(4)=3,990,000
5 0
3 years ago
Read 2 more answers
PLEASE HELP. !!!!!!!!!
madam [21]

Answer:

Step-by-step explanation:

The formula for this is:

6(6 + x) = 3(3 + 25) and

6(6 + x) = 3(28) and

36 + 6x = 84 and

6x = 48 so

x = 8

8 0
3 years ago
Write 2.72 as a mixed number and as a improper fraction
saveliy_v [14]

Answer:

your answer to this is 68/25

4 0
3 years ago
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