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jenyasd209 [6]
3 years ago
6

Which of the following show an element of the sample space for first tossing a coin and a die

Mathematics
1 answer:
gulaghasi [49]3 years ago
7 0

Answer:

Its B

Step-by-step explanation:

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Last month, Katie started training for the swim team. She swam 20 laps every day for 18 training days. This month, Katie wants t
nasty-shy [4]

She swim 20 laps every day for 18 training days

so total laps done last month = 20*18 = 360 laps

She will swim 3 more laps per training day and add more training days to her monthly schedule.

20 laps + 3 laps = 23 laps

(a)If Katie adds 5 training days to her schedule this month, will she swim 215 more laps?

18 days + 5 days more = 23 days

23 laps every day for 23 training days

so total laps = 23*23 = 529 laps. That is 169 more laps than 360 laps done last month. Hence she cannot swim 215 more laps

If Katie adds 10 more training days to her schedule this month, will she swim 215 more laps?

18 days + 10 days more = 28 days

23 laps every day for 28 training days

so total laps = 23*28 =644 laps. That is 284 more laps than 360 laps done last month. Hence she can swim 215 more laps

(c)If Katie adds 6 more training days to her schedule this month, will she swim 215 more laps?

18 days + 6 days more = 24 days

23 laps every day for 24 training days

so total laps = 23*24 =552 laps. That is 192 more laps than 360 laps done last month. Hence she cannot swim 215 more laps

Build an equation for finding the number of additional training days she needs to swim 215 more laps

Let x be the number of days more

So training days = 18 + x

215 more laps , so total laps = 360 + 215 = 575

3 more laps per training day so 20 + 3 = 23 laps per day

laps * training days = total laps

so equation becomes

23 * (18+x) = 575

Now solve for x

414 + 23x = 575

Subtract 414 from both sides

23x = 161

x= 7

so she needs 7 training days to swim 215 more laps

3 0
3 years ago
3.4 is what percent of 4.25?<br><br> Enter your answer in the box.
Masteriza [31]

Step-by-step explanation:

100% = 4.25

1% = 100%/100 = 4.25/100 = 0.0425

how many % are 3.4 ?

we find this by calculating how often 1% (0.0425) fits into 3.4.

3.4 / 0.0425 = 80 %

6 0
2 years ago
-6x^2+96 factor completely
sleet_krkn [62]

Answer:

-6x^98

Step-by-step explanation:

-6x^2+96

add the numbers: 2+96=98

= -6x^98

7 0
3 years ago
Need help how do I Solve a=2x+6xz for x.
Ipatiy [6.2K]

Answer:

x=4

Step-by-step explanation:

7 0
3 years ago
Students at Bruce's school are allowed to play more than one sport. So, Brent polled a large sample of students to find how many
masha68 [24]

Answer:

A. Bar graph

Step-by-step explanation:

A bar graph is also known to be a bar chart. It is used to represent data such as quantities and numbers graphically. These data are represented in bars or strip.

The bar graph is best answer because, from the question a student could play more than a sport, therefore a student could belong to about two or more sports categories. This makes a bar graph more appropriate. Using pie chart would be misleading as students can belong to more than one category

5 0
3 years ago
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