3 years ago

Which list shows the following numbers in order from least to greatest?

Mathematics

1 answer:

Lunna [17]3 years ago

7 0

Answer:

Step-by-step explanation:

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Peter has money in two savings accounts. One rate is 6% and the other is 14%. If he has $900 more in the 14% account and the tot

-BARSIC- [3]

Answer:

$1375 at 14%
$475 at 6%

Step-by-step explanation:

Let x represent the amount Peter invested at 14%. Then (x-900) is the amount he invested at 6%. His total interest earned is ...

0.14x + 0.06(x -900) = 221

0.20x = 275 . . . . . . . . . . . . . . . . add 54, simplify

x = 1375 . . . . . . . . . . . . . . . . . . . .divide by 0.2; amount invested at 14%

(x-900) = 475 . . . . . . . . . . . . . . . amount invested at 6%

Peter invested $475 in the 6% account and $1375 in the 14% account.

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3 years ago

What is the coeffieent of (x^4)(y^4) in the expansion of (x+y)^8

kap26 [50]

ANSWER

The coefficient is 70.

EXPLANATION

The given binomial expression is

$(x+y)^8$

The specific term of a binomial expansion can be determined using the formula,

$T_{r+1}= nC_ra^{n-r}b^r$
where

$n=8,r=4,a=x,b=y$

We substitute these values into the formula to get,

$T_{4+1}= 8C_4x^{8-4}y^4$

We simplify to get,

$T_{5}= 70x^{4}y^4$

Hence the coefficient is 70.

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3 years ago

Can someone help me with these two

Leviafan [203]

Answer: I believe it is D..

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3 years ago

In the past you paid $800 per month to rent your apartment. You now pay $900 per month for your rent. What is the percent increa

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3 years ago

Laine reads 25 pages in 30 minutes. If Laine reads 200 pages at this same rate, how long will it take her?

irinina [24]

Well think about it

50 pages = 1 hour (60 mins)

so it would take laine 4 hours in total to read 200 pages at the rate

hope that helps :)

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3 years ago