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2 years ago

Factor x2 − 8x + 9. (x − 9)(x − 1) (x + 9)(x + 1) Prime (x + 9)(x − 1)

Mathematics

1 answer:

kicyunya [14]2 years ago

3 0

Answer:

x²-8x+9

Step-by-step explanation:

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What is 7% of 300000000 and how do you work it out?

ArbitrLikvidat [17]

Answer:

21,000,000

Step-by-step explanation:

Divide 7 into 300000000

If you could subscribe to my friend penny_pg3d on yt that would be great

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2 years ago

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Kate wants to build a fence around her yard. The width of the yard is one-third the length. The perimeter of the yard is 80 feet

liq [111]

P = 2(L + W)
P = 80
W = 1/3L

80 = 2(L + 1/3L)
80 = 2(3/3L + 1/3L)
80 = 2(4/3L)
80 = 8/3L
80 * 3/8 = L
240/8 = L
30 = L .... length (L) is 30 ft

W = 1/3L
W = 1/3(30)
W = 30/3
W = 10 <== width (W) = 10 ft

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2 years ago

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Which symbol would make the number sentence true 8/11 ? 0.73

Nikitich [7]

Answer:

0.73 is greater than 8/11 so the answer is B

Step-by-step explanation:

if you make 8/11 into a decimal its 0.727273 which is less than 0.73

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2 years ago

A tiling company completes two jobs. The first job has $1200 in labor expenses for 40 hours worked, while the second job has $15

artcher [175]

The closest i can think of that makes since is 1560=30(52)+b, mainly because
30 x 52 = 1560 so that's what i think it is and if im wrong sry.

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2 years ago

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When the effective interest rate is 9% per annum, what is the present value of a series of 50 annual payments that start at $100

ser-zykov [4K]

Answer:

$1,109.62

Step-by-step explanation:

Let's first compute the future value FV.

In order to see the rule of formation, let's see the value (in $) for the first few years

End of year 0

1,000

End of year 1(capital + interest + new deposit)

1,000*(1.09)+10

End of year 2 (capital + interest + new deposit)

(1,000*(1.09)+10)*1.09 +10 =

$\bf 1,000*(1.09)^2+10(1+1.09)$

End of year 3 (capital + interest + new deposit)

$\bf (1,000*(1.09)^2+10(1+1.09))(1.09)+10=\\1,000*(1.09)^3+10(1+1.09+1.09^2)$

and we can see that at the end of year 50, the future value is

$\bf FV=1,000*(1.09)^{50}+10(1+1.09+(1.09)^2+...+(1.09)^{49}$

The sum

$\bf 1+1.09+(1.09)^2+...+(1.09)^{49}$

is the sum of a geometric sequence with common ratio 1.09 and is equal to

$\bf \frac{(1.09)^{50}-1}{1.09-1}=815.08356$

and the future value is then

$\bf FV=1,000*(1.09)^{50}+10*815.08356=82,508.35564$

The present value PV is

$\bf PV=\frac{FV}{(1.09)^{50}}=\frac{82508.35564}{74.35572}=1,109.616829\approx \$1,109.62$

rounded to the nearest hundredth.

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2 years ago