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3 years ago

A survey indicated that 3 out of 5 doctors use brand X aspirin. If 2000 doctors were surveyed, how many used brand X?

Mathematics

1 answer:

Blizzard [7]3 years ago

8 0

2000(3/5)

6000/5

1200

So 1200 doctors used brand X

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The length of a rectangle is four times its width.

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I think it would be 324 divided by 4 = 81 in.

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3 years ago

(x-4)2 + 3x at the value x = 7

Volgvan

Answer:

Step-by-step explanation:

x = 7

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= ( 7 - 4 )^2 + 3 ( 7 )

= 3^2 + 21

= 9 + 21

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2 years ago

Read 2 more answers

Rewrite e^-5=x in logarithmic form

Agata [3.3K]

Answer:

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2 years ago

(10.02)

melisa1 [442]

Answer:

$sin O=\dfrac{3\sqrt{13}}{13}\\cos O=\dfrac{2\sqrt{13}}{13}\\tan O=\dfrac{3}{2}$

Step-by-step explanation:

If the point (2,3) is on the terminal side of an angle in standard position.

Adjacent of O, x=2,

Opposite of O, y=3

Next, we determine the hypotenuse, r using Pythagoras Theorem.

$Hypotenuse =\sqrt{Opposite^2+Adjacent^2} \\r=\sqrt{3^2+2^2} \\r=\sqrt{13}$

Therefore:

$sin O=\dfrac{Opposite}{Hypotenuse} \\sin O=\dfrac{3}{\sqrt{13}} \\$Rationalizing\\sin O=\dfrac{3\sqrt{13}}{13}$

$cos O=\dfrac{Adjacent}{Hypotenuse} \\cos O=\dfrac{2}{\sqrt{13}} \\$Rationalizing\\cos O=\dfrac{2\sqrt{13}}{13}$

$Tan O=\dfrac{Opposite}{Adjacent} \\tan O=\dfrac{3}{2}$

4 0

2 years ago

What is the value of n where 131 is the nth term of the sequence -2, 5, 12…..?

Inessa [10]

D means common difference which is the last term minus second last term .
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