1 year ago

PLEASE HELP ASAP 30 POINTS!

Mathematics

2 answers:

Zarrin [17]1 year ago

7 0

Answer:-4/3

Step-by-step explanation:

sveta [45]1 year ago

6 0

Answer:

-4/3

Step-by-step explanation:

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A garden needs 100 feet of fencing . The width needs to be 20 feet what is the length of the garden

enot [183]

Answer:

Step-by-step explanation:

100/20=5

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4 years ago

Alex has $8.75 in dimes and quarters in a jar. If he has 65 coins, how many quarters are in his jar?

Ksju [112]

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4 years ago

What is C=6/6+12*180

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C=2161
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3 years ago

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Lilia asked 12 students how many courses they have taken so far at her college. Here is a least of answers.

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50%

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2 years ago

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Find the sum of the first 60 terms of the sequence below a_n=5n+10

ASHA 777 [7]

$\displaystyle{a_n=5n+10$

means that the value of the n'th term of the sequence is 5n+10

for example, the value of the seventh term is $\displaystyle{a_7=5\cdot 7+10=35+10=45$

The sum of the first 60 terms can be calculated as follows:

$\displaystyle{ a_1+a_2+a_3+...+a_{60}=$

$\displaystyle{ (5\cdot1+10)+(5\cdot2+10)+(5\cdot3+10)+...(5\cdot60+10)$

$=5(1+2+3+...59+60)+10\cdot 60$

using the Gauss formula for the addition of the first n natural numbers:

$1+2+3+...59+60= \frac{60\cdot(61)}{2}=30\cdot61=1,830$

thus we have:

$5(1+2+3+...59+60)+10\cdot 60=5\cdot1,830+600$

$=9,150+600=9,750$

Answer: 9,750

5 0

3 years ago