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My name is Ann [436]
2 years ago
9

On friday, 84% of the people who went to a cafe and ordered coffee. there were 325 people who went to the cafe. how many of thes

e 325 customers bought coffee?​
Mathematics
2 answers:
alekssr [168]2 years ago
8 0
273 of the customer bough coffee because 84% of 325 is 273.
bonufazy [111]2 years ago
3 0
273 >3 hopefully this helps you, stay safe !
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2. Determine the sum of the first 400 ODD numbers.<br><br>​
il63 [147K]

Odd numbers take the form 2n-1, where n\ge1 is an integer. When n=400, the last odd number would be 799. So we're adding

S=1+3+5+\cdots+795+797+799

By reversing the order of terms, we have

S=799+797+795+\cdots+5+3+1

and we can pair up terms in both sums at the same position to write

2S=(1+799)+(3+797)+(5+795)+\cdots(795+5)+(797+3)+(799+1)

so that we are basically adding 400 copies of 800, and from there we can find the value of the sum right away:

2S=400\cdot800\implies S=160,000

###

We could also make use of the formulas,

\displaystyle\sum_{i=1}^n1=n

\displaystyle\sum_{i=1}^ni=\dfrac{n(n+1)}2

We have

S=\displaystyle\sum_{i=1}^{400}(2i-1)=2\sum_{i=1}^{400}i-\sum_{i=1}^{400}1=400(400+1)-400=400^2=160,000

3 0
3 years ago
Please help!!!! Select the correct location on the graph.
Ludmilka [50]

Answer:

Its the one on the left

Step-by-step explanation:

7 0
2 years ago
Which of the following is equivalent to - 2 + 3y = -6?
scZoUnD [109]

Answer:

Can you explain to me what x is?

6 0
3 years ago
Please answer! These are due tmr and it's 12:53 rn!
SashulF [63]
1.D
2.D
3.C
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6.2160
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You really shouldn't be waiting untill 1 AM to do your homework!
5 0
3 years ago
If 13m=156 then m=12
zheka24 [161]
Take 156, divide by 13 and the multiply by 12. It is 144
4 0
3 years ago
Read 2 more answers
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