3 years ago

One hundred fifty people were surveyed and asked if they believed in UFOs, ghosts, and Bigfoot.

Mathematics

1 answer:

Ilya [14]3 years ago

5 0

Answer:

this ven diagram is 4 u lol

Step-by-step explanation:

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Solve the proportions using cross products. Round to the nearest hundredth is necessary. 21miles/49hours = 15miles h hours

SSSSS [86.1K]

$\dfrac{21}{49}=\dfrac{21:7}{49:7}=\dfrac{3}{7}\\\\\dfrac{21}{49}=\dfrac{15}{h}\to\dfrac{3}{7}=\dfrac{15}{h}\qquad\text{cross multiply}\\\\3h=(7)(15)\\\\3h=105\qquad\text{divide both sides by 3}\\\\\boxed{h=35}\\\\Answer:\ 35\ hours$

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4 years ago

The figures are similar. 15:18 or 5:6. Find the ratio of their perimeters and the ratio of their areas.

Reil [10]

Ratio of perimeter (linear measure) is the same as the scale factor (5:6).
Ratio of area (unit squared) is the square of the ratio, namely 5^2:6^2=25:36
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3 years ago

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Katen [24]

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1 year ago

Simplify the square root (Picture provided)

Elodia [21]

For this case we must find the value of the following expression:

$\sqrt {8 ^ {17}}$