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olga_2 [115]
3 years ago
8

240 is 75% of what number?

Mathematics
2 answers:
kramer3 years ago
5 0

Answer:

<h2>320</h2>

Step-by-step explanation:

Let the unknown number be x

75 \% \times x = 240 \\  \frac{75x}{100}  = 240

Cross Multiply

75x \times 1 = 100 \times 240 \\ 75x = 24000

Divide both sides of the equation by 75

\frac{75x}{75}  =  \frac{24000}{75}

Simplify

x = 320

Nina [5.8K]3 years ago
4 0

Answer:

320

Step-by-step explanation:

you would do \frac{75}{100}*x=240

then you would multiply both sides by 100 and then divide both sides by 75 which woud give you x=240*\frac{100}{75}

which would give you \frac{24000}{75}=x

which then simplifies down to 320

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The area of the kite can be found as follows;
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3 years ago
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the point slope form of the equation of a line that passes through (8,4) and (0,2) is y-4=1/4(×-8) what is the slope intercept f
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Answer:

\large\boxed{y=\dfrac{1}{4}x+2}

Step-by-step explanation:

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The point-slope form of the equation of a line:

y-y_1=m(x-x_1)

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Answer:

The estimated age of the skull is 39118 years.

Step-by-step explanation:

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A(t) = A(0)(1-r)^t

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This means that A(5600) = 0.5A(0). We use this to find r, or 1 - r, to replace in the equation. So

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1 - r = (0.5)^{\frac{1}{5600}}

1 - r = 0.9999

So

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Only 2% of the original amount of carbon-14 remains in the burnt wood of the campfire.

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\log{(0.9999)^t} = \log{0.02}

t\log{0.9999} = \log{0.02}

t = \frac{\log{0.02}}{\log{0.9999}}

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The estimated age of the skull is 39118 years.

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