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spayn [35]
4 years ago
12

There are ten kids in a class. When any two meet, each says “hi” to the other and the answer “hi” follows. Before the class star

ts, how many times would one hear the word “hi”?
Mathematics
1 answer:
kogti [31]4 years ago
7 0

Answer: 20

Step-by-step explanation:

From the question, there are ten kids in a class and when any two meet, each kid says “hi” to the other kid and the answer “hi” follows.

The number hi one would hear before the class starts would be 10 multiplied by 2 because there are 10kids and 2 hi whenever the kids greet.

= 10 × 2

= 20hi

There will be 20 times the word hi would be heard

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Which graph represents y = RootIndex 3 StartRoot x EndRoot + 2?
mojhsa [17]

Answer:

see attachment

Step-by-step explanation:

We want to choose the graph that represents:

y =  \sqrt[3]{x}  + 2

We know the parent function will be:

y =  \sqrt[3]{x}

There has been a vertical shift upward by 2 units.

Therefore the graph of

y =  \sqrt[3]{x}  + 2

is obtained by shifting the parent function up 2 units.

Its y-intercept will move from 0 to 2.

The graph is shown in attachment.

6 0
3 years ago
Read 2 more answers
Mulder and Scully are driving to the same town. Mulder leaves the office at 9​:30a.m. averaging 57mph. Scully leaves at 10​:00​a
koban [17]

Answer:

Scully will catch up with Mulder by 7:30 PM.

Step-by-step explanation:

Consider the provided information.

Mulder leaves the office at 9​:30a.m. averaging 57mph.

Scully leaves at 10​:00​a.m., following the same path and averaging 60 mph.

Distance covered by Mulder between 9:30 AM and 10:00 AM:

\frac{57}{2}= 28.5 miles

Let t is the time taken by Scully to catch up with​ Mulder.

After leaving office Scully needs to cover extra distance of 28.5 miles because Mulder leaves the office earlier.

Therefore total distance cover by them is:

28.5+57t=60t

28.5=60t-57t

28.5=3t\\t=9.5

Hence, it would take 9 hours 30 minutes to catch up Mulder.

10 am + 9 hours 30 minutes = 7:30 pm

Therefore, Scully will catch up with Mulder by 7:30 PM.

6 0
3 years ago
A manager has 2500 kg of sand delivered to a construction site everyday.
Lilit [14]
2500 kg x 4 weeks =10000kg 
<span>1 ton = 907.2 kg
     ??=10000kg
1 x 10000 divided by 907.2
answer=11 tones </span>
3 0
3 years ago
Evaluate the expression3(7+4)2-14/7
adoni [48]

Answer:

64

Step-by-step explanation:

3(7+4)2-14/7

3(11)2-14/7

(33)2-14/7

66-14/7

66-2

64

3 0
3 years ago
The shoe store has twice as many black shoes as it does brown shoes. The total number of shoes is 66. How many brown shoes are t
katrin2010 [14]
Black=2\times\ Brown
Black\ +\ Brown=66
2Brown+Brown=66
3Brown=66
Brown=22
Black=2Brown
Black=2(22)
Black=44

There are 22 Brown shoes and 44 Black shoes. 
3 0
3 years ago
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