2 years ago

There are 32 fishes in a tank. 25% of them are gold fish. How many of yhem are gold fish? Write and solve a proportion.

1 answer:

5 0

25%of 32 should be written as 32•25%.then you convert 25%to a decimal wich is 25/100=0.25,last you multiply 32• .25=8 . 8 of them aregoldfish

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Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

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3 years ago

The Revenue for the week is $2000, and labor cost consists of two workers earning $8 per hour who work 40 hours each, what is la

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2 years ago

1000 was invested at 5.5% interest, compounded annually. After sometime the amount had grown to 1550. How long was the money inv

scZoUnD [109]

compound interest equation for annually compounded

$A=P(1+r)^t$

A=final amount

P=principal

r=rate in decimal

t=time in years

given that

A=1550

P=1000

r=5.5%=0.055

find t

$1550=1000(1+0.055)^t$

divide both sides by 1000

$1.55=1.055^t$

take ln of both sides

$ln(1.55)=ln(1.055^t)$

use ln rule $ln(a^b)=b(ln(a))$

$ln(1.55)=t(ln(1.055))$

divide both sides by ln(1.055)

$\frac{ln(1.55)}{ln(1.055)}=t$

using a calculator, we get that t=8.18544 yrs

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4 0

2 years ago