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Marta_Voda [28]
3 years ago
13

Laura fills a bucket at a rate 6L/min . At the same time Sarah empties a bucket holding 30 L of water at a rate of 9L/min . Let

L repeats the number of liters of water and let repreasent time or min . The system models this situation.
How many min will it take for the buckets to hold equal amounts of water and how much will that be

L=6t
L=30-9t

It will take ____ min for both buckets to hold equal amounts of water. They will each hold ___liter
Mathematics
1 answer:
seropon [69]3 years ago
7 0
T=2 and L=12 (6*2=12)(30-(9*2=18)=12)
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Lorelle pays someone $35 to clear her driveway when it snows. She wants to buy an electric snow blower for $689 so that she can
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Since 689 / 35 is about 20, it would take around 4 seasons to break even
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Sasha places an online order. In addition to the price of the item she orders, she pays 5% tax and a flat shipping fee of $15. T
natita [175]

Answer:

  • $120

Step-by-step explanation:

Let the price is x.

<u>Set the equation and solve for x:</u>

  • (x + 5%) + 15 = 141
  • 1.05x + 15 = 141
  • 1.05x = 126
  • x = 126/1.05
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Two pumps were required to pump water out of a submerged area after a hurricane. Pump A , the larger if the two pumps, can pump
larisa86 [58]
I would say 100 hours i am not for sure cause i am a bit confused. sorry
7 0
2 years ago
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Two numbers add to 436 and the front is 134 bigger than the second. What are the two numbers?
Ugo [173]

Lets say x is the smaller number and y is the bigger number.


x + y = 436

x + 134 = y


We can substitute the second equation into the first (substitute x + 134 in for y)


x + (x+134) = 436


2x + 134 = 436


2x = 302


x = 151


We can now plug this back into either formula (i use the second)


151 + 134 = b


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The 2 numbers are 151 and 285

4 0
3 years ago
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If f(x)f(x) is an exponential function where f(-0.5)=27f(−0.5)=27 and f(1.5)=21f(1.5)=21, then find the value of f(0.5)f(0.5), t
vovikov84 [41]

Given:

f(x) is an exponential function.

f(-0.5)=27

f(1.5)=21

To find:

The value of f(0.5), to the nearest hundredth.

Solution:

The general exponential function is

f(x)=ab^x

For, x=-0.5,

f(-0.5)=ab^{-0.5}

27=ab^{-0.5}          ...(i)

For, x=1.5,

f(1.5)=ab^{1.5}

21=ab^{1.5}          ...(ii)

Divide (ii) by (i).

\dfrac{21}{27}=\dfrac{ab^{1.5}}{ab^{-0.5}}

\dfrac{7}{9}=b^2

Taking square root on both sides, we get

\dfrac{\sqrt{7}}{3}=b

b\approx 0.882

Putting b=0.882 in (i), we get

27=a(0.882)^{-0.5}

27=a(1.0648)

\dfrac{27}{1.0648}=a

a\approx 25.357

Now, the required function is

f(x)=25.357(0.882)^x

Putting x=0.5, we get

f(0.5)=25.357(0.882)^{0.5}

f(0.5)=23.81399

f(0.5)\approx 23.81

Therefore, the value of f(0.5) is 23.81.

6 0
3 years ago
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