QUESTION 2

Mathematics

1 answer:

stiv31 [10]3 years ago

3 0

The first quartile would be 48.5

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Use the arithmetic sequence of numbers 1, 3, 5, 7, 9,.to find the following:

Rasek [7]

$a)\\\\
a_{n+1}-a_n=d\\
for\ n=1\\
a_2-a_1=d\\
d=3-1=2\ - difference\ between\ two\ consecutive\ terms\\\\
b)\\
a_n=a_1+(n-1)d\\
n=101\\
a_{101}=1+(101-1)*2\\
a_{101}=1+100*2=200+1=201\\\\
c)\\
Sn=\frac{a_1+a_n}{2}*n\\
n=20\\
a_n=a_{20}=1+(20-1)*2=1+38=39\\
Sn=\frac{1+39}{2}*20=400\ \ Sum\ of\ the\ first\ 20 \ numbers.$

6 0

3 years ago

1+10,000+10+100,000in word form is

Kaylis [27]

Answer:

Step-by-step explanation:

one-hundred and ten-thousand and eleven

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3 years ago

What is the ordered pair for <br> X+y= 4<br> X-y=10

vazorg [7]

1) y=?x+4

2) y=?x+10

Use the formula y= mx+b to simply convert.

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4 years ago

Evan purchases a board game that is regularly priced at $19.95. It is on sale for 40% off. What is the sale price of the board g

stiv31 [10]

19.95 × 0.40 = $7.98.

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3 years ago

What does x equal? Dpsewbskdye

Mice21 [21]

Answer:

x = 7

Step-by-step explanation:

27 = 7x + 6 - 4x (Given)

27 = 3x + 6 (Simplify)

27 - 6 = 3x + 6 - 6 (Subtract 6 on both sides)

21 = 3x (Simplify)

21/3 = 3x/3 (Divide 3 on both sides)

7 = x (Simplify)

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3 years ago