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NikAS [45]
3 years ago
6

Roses sell for $3 each and carnations for$1.50 each. If a mixed bouquet of 20 flowers consisting of roses and carnations cost $3

9 how many of each type of flower is in the bouquet?
Mathematics
2 answers:
astra-53 [7]3 years ago
8 0
3x + 1.50y = 39

12 Roses     2 Carnations

3(12) + 1.50(2) = 39
36 + 3 = 39
39=39
Elden [556K]3 years ago
6 0
x-number\ od\ roses\\20-x-number\ of\ carnations\\\\3x+1.5(20-x)=39\\3x+30-1.5x=39\\1.5x=39-30\\1.5x=9\ \ \ \ \ |:1.5\\x=6\\\\20-6=14\\\\There\ was\ 6\ roses\ and\ 14\ carnations.
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Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at 95 miles per
irinina [24]

Answer:

2.6 hr

Step-by-step explanation:

distance / rate = time

rate = 75 + 95 = 170  mile/hr

distance = 442 miles

442 miles / 170 mile/hr  = 2.6 hr

7 0
2 years ago
How does the digit 5 in the number 357 compare with the digit 5 in the number 465​
OleMash [197]

Answer:

Since the 5 in 357 is in the tens digit, it is 5*10=50, and the 5 in 465 is in the ones digit, so it is 5*1=5. 5≠50

5 0
3 years ago
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Tickets for a play at the community theater cost $8 for children and $20 for adults. A total of 300 tickets have been sold for $
salantis [7]

Answer:

125 adults

175 children

Step-by-step explanation:

3900=8c+20a

300=c+a

c=300-a

substitute

3900=8(300-a)+20a

reduce

3900=2400-8a+20a

1500=12a

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substitute for a

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8 0
3 years ago
Factor -22 out of 15.4b -6.6
valina [46]

Answer:

-7b+3

Step-by-step explanation:

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7 0
3 years ago
The most recent poll of 50 randomly-selected members of a school club with a total of 80 members showed that 38 are planning to
melisa1 [442]

Answer with Explanation:

Total number of members in School Club = 80 members

Number of member randomly Selected,that is sample size used  (P) = 50 members

Number of members who are planning to vote for Talia = 38 members

Z Score for 95% confidence interval =1.96

it is given that Margin of Error ,E,of the poll using a 95% confidence interval=12%

E=\frac{Z*\sigma}{\sqrt{P}}\\\\ \frac{12}{100}=\frac{1.96 * \sigma}{\sqrt{50}}\\\\ \sigma=4.32890

Standard Deviation=4.3 (approx)

→95% confidence level for students who are planning to vote for Talia as president of the club lie between → 38 + 4.3 = 42.3 to 38 -4.3=33.7.

→So, members which will vote for Talia as president of the club lies between minimum of 33 members and maximum of 42 members.

5 0
3 years ago
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