3 years ago

-1 + 2x - x = x - 8 + (-x)

Mathematics

1 answer:

CaHeK987 [17]3 years ago

6 0

Answer:

x = -7

Step-by-step explanation:

-1 + x = -8

x = -7

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one hose can fill a goldfish pond in 14 minutes, and the two hoses can fill the same pond in 10 minutes, find how long it takes

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Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

Let

x-----> the amount invested at 5%

50,000-x -----> the amount invested at 7%

$t=1\ year\\ I=\$2,720\\r_1=0.05\\r_2=0.07\\P_1=\$x\\P_2=\$(50,000-x)$

substitute in the formula above

$2,720=x(0.05*1)+(50,000-x)(0.07*1)$

solve for x

$2,720=0.05x+3,500-0.07x$

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$(50,000-x)=\$11,000$

therefore

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