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poizon [28]
3 years ago
10

5(9-4)2-32 the random 2s are supposed to be squared thank you

Mathematics
1 answer:
Elden [556K]3 years ago
4 0
5(9-4)2-3^2                -3^2=9
5(9-4)2+9                   9-4=5
5(5)2+9                       5(5)=25
(25)2+9                       (25)2=50
9+50=59

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Answer:

y=MX+c

2y=3x-7

y=3/2x-7/2

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Please help with math
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I did some research, and I think it's the first one. PLEASE CORRECT ME IF I'M WRONG!!
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5 0
3 years ago
Barbara made a bad investment. Rather than earning interest, her money is decreasing in value by 11% each week! After just one w
pochemuha

Answer: She started with $160.

It will take 6 weeks before she has less than half of what she originally invested.

Step-by-step explanation:

If her money is decreasing in value by 11% each week, it means that the rate at which it is decreasing is exponential.

We would apply the formula for exponential decay which is expressed as

A = P(1 - r)^t

Where

A represents the value of the investment after t weeks.

t represents the number of weeks.

P represents the initial value of the investment.

r represents rate of depreciation.

From the information given,

A = $142.40

r = 11% = 11/100 = 0.11

t = 1

Therefore

142.40 = P(1 - 0.11)^1

142.40 = P(0.89)

P = 142.4/0.89

P = 160

For her to have half of what she invested originally, then

80 = 160(0.89)^t

80/160 = (0.89)^t

0.5 = (0.89)^t

Taking log of both sides to base 10

Log 0.5 = log0.89^t = tlog0.89

- 0.3010 = - 0.051t

t = - 0.3010/- 0.051

t = 5.9

Approximately 6 weeks

5 0
3 years ago
It takes a groundskeeper 40 minutes to prepare a little league baseball field for a game. it takes his assistant 50 minutes to p
Elena L [17]
1/40+1/50=1/n
5/200+4/200=1/n
9/200=1/n
9n=200
n=200/9 minutes for both of them to prepare the field
☺☺☺☺
7 0
3 years ago
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