3 years ago

__ Given: AD diameter of circle P.

Mathematics

2 answers:

ruslelena [56]3 years ago

6 0

If I'm reading it right it is 15

Brut [27]3 years ago

5 0

Arcs get their angle measurement from the central angle they're in.

in this case the arcAB has a central angle of ∡1, and if ∡1 = 30°, the arcAB is the same.

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A magazine ad states that 4 out of 7 doctors recommend Flash toothpaste. if 1400 doctors were surveyed, how many doctors recomme

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Answer:

The number of doctors recommended flash toothpaste 800.

Step-by-step explanation:

Given:

A magazine ad states that 4 out of 7 doctors recommend Flash toothpaste.

Now, to find the numbers of doctors recommended flash toothpaste if 1400 doctors were surveyed.

Let the number of doctors recommended be $x$ .

And the total number of doctors surveyed were 1400.

So, as given 4 out of 7 doctors recommend flash toothpaste.

So, 4 equivalent to 7 = $\frac{4}{7}$ .

And, $x$ equivalent to 1400 = $\frac{x}{1400}$ .

Thus, we set the proportion and solve by cross multiplication method:

$\frac{4}{7} =\frac{x}{1400}$

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$x=800.$

Therefore, the number of doctors recommended flash toothpaste 800.

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