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Nadusha1986 [10]
2 years ago
14

twenty seven out of forty dentists recommended a certain whitener for teeth. if 1080 dentists recommended the whitener in the su

rvey, how many dentists were surveyed?
Mathematics
1 answer:
Anestetic [448]2 years ago
3 0

Answer:

1,600 dentists were surveyed in total.

Step-by-step explanation:

We can set up a proportion for this problem:

\frac{27}{40} = \frac{1080}{x}\\\\\\

Now we can cross multiply:

27*x = 1080*40\\\\27x = 43,200\\\\27x/27 = 43,200/27\\\\x = 1,600

1,600 dentists were surveyed in total.

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Simplify<br> (X+4)+(2x+3)
vfiekz [6]

Answer:

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Step-by-step explanation:

<u>Step 1:  Distribute the plus</u>

(x + 4) + (2x + 3)

x + 4 + 2x + 3

<u>Step 2:  Combine like terms</u>

x <u>+ 4</u> + 2x <u>+ 3</u>

<em>3x + 7</em>

<em />

Answer:  3x + 7

<u>If needed solve</u>

3x + 7 - 7 = 0 - 7

3x / 3 = -7 / 3

<em>x = -7/3</em>

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2 years ago
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hope this helps.
7 0
3 years ago
Find the measurement which is most accurate to 45.76 kg.
svlad2 [7]

Answer:

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Step-by-step explanation:

The measurement with the smallest difference from 45.76 is 45.77 kg.

4 0
3 years ago
Ayúdenme con estos problemas :(
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