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3 years ago

Given the equation: 3x^2-12=0

Mathematics

1 answer:

cluponka [151]3 years ago

7 0

Step-by-step explanation:

3x²-12=0

3(x²-4)=0

3(x²-2²)=0

3(x+2)(x-2)=0

hope it helps.

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the probability would be 100% if your smart

Step-by-step explanation:

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2 years ago

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UNO [17]

Answer:

$\frac{225}{16} cm/s$

Step-by-step explanation:

We are given that

$\frac{dV}{dt}=25cm^3/s$

Side of base=4 cm

l=w=4 cm

Height,h=12 cm

We have to find the rate at which the water level rising when the water level is 4 cm.

Volume of pyramid= $\frac{1}{3}lwh=\frac{1}{3}l^2h$

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$l=\frac{1}{3}h$

Substitute the value

$V=\frac{1}{27}h^3$

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$\frac{dV}{dt}=\frac{3}{27}h^2\frac{dh}{dt}$

Substitute the values

$25=\frac{1}{9}(4^2)\frac{dh}{dt}$

$\frac{dh}{dt}=\frac{25\times 9}{16}=\frac{225}{16} cm/s$

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3 years ago

23 A racing car used 255 litres of fuel to complete a 340 km race. On average, how many litres of fuel did the car use every 100

stealth61 [152]

255 litres for 340 km
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3 years ago

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emmainna [20.7K]

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lukranit [14]

Answer:

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Step-by-step explanation:

Rule of exponents means that you can subtract when they are divided

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7.8*10^2/3.1

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2 years ago