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madam [21]
3 years ago
13

The sum of the first natural number and 0 is 1, the sum of the first two natural numbers and 0 is 3, the sum of the first three

natural numbers and 0 is 6, and the sum of the first four natural numbers and 0 is 10. Which explicit formula generates the sum of the first n natural numbers and 0?
Mathematics
2 answers:
Kitty [74]3 years ago
8 0
The sum of the first n natural numbers and 0=
n*(n+1)/2
lesantik [10]3 years ago
3 0

Answer:

A

Step-by-step explanation:

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The drama club sold bags of candy and cookies to raise money for the spring show. Bags of candy cost $5.50 and bags of cookies c
vaieri [72.5K]

Let's assume

the number of bags of candy =x

the number of bags of cookies =y

There were 5 more bags of cookies sold than candy

so, we get

y=x+5

Bags of candy cost $5.50

so, total cost of candy is

=5.50x

bags of cookies cost $3.50

so, total cost of cookies is

=3.50y

so,

total cost = (total cost of candy)+(total cost of cookies)

we get

total cost =5.50x+3.50y

so, we can plug

5.50x+3.50y=53.50

now, we can plug y

5.50x+3.50(x+5)=53.50

5.5x\cdot \:10+3.5\left(x+5\right)\cdot \:10=53.5\cdot \:10

55x+35\left(x+5\right)=535

55x+35x+175=535

90x+175=535

90x+175-175=535-175

90x=360

x=4

now, we can find y

y=x+5

y=4+5

y=9

so,

the number of bags of candy =4

the number of bags of cookies =9............Answer


5 0
3 years ago
Can you guys help again
dangina [55]

Answer:

Step-by-step explanation:

1 = 27

2 = 36

2 = 1,000

3 0
3 years ago
Read 2 more answers
Sweet T has 2 orange picks for every 5 green. If there are 21 picks In all, how many picks are orange?
r-ruslan [8.4K]

Answer:

6 orange picks

5 0
3 years ago
3.
steposvetlana [31]

Answer:

Step-by-step explanation:

range?

6 0
4 years ago
A student in the Construction Trades program at the Cecil County School of Technology has 4 1/2gallons of paint. If he uses 2.75
Andrew [12]

Answer:

1.75 gallons of paint

Step-by-step explanation:

A student in the construction trades program has 4 1/2 gallons of paint

If the student uses 2.75 gallons in one room then the gallons of paint that are left can be calculated as follows

= 4 1/2 - 2.75

= 9/2 - 2.75

= 4.5 - 2.75

= 1.75

Hence 1.75 gallons of paint are left

3 0
3 years ago
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