80% of the doctors surveyed believed exercising 30 minutes a day can help you live a healthier life. If 240 doctors believe in exercising, how many doctors were surveyed?

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

The question you should be asking yourself is, "80% of how many doctors is 240?" Algebraically, 80% is .8, "of" is multiplying, "how many doctors" is our unknown, and "is" means equals. Putting that all together:

.8x = 240 so

x = 300

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If A(1/3.5, 5) and B(10,39)..Find the slope

13 over 16 minus 3 over 8

Answers

Answer:

$(7)/(16)$

Step-by-step explanation:

=> $(13)/(16)-(3)/(8)$

LCM = 16

=> $(13-6)/(16)$

=> $(7)/(16)$

Answer:

7/16

Step-by-step explanation:

13/16 - 3/8

Lowest common multiple is 16.

= 13/16 - 6/16

Subtract the fractions.

= (13-6)/16

= 7/16

The formula for a volume of a cylinder is V= pi r squared h/3. solve the equation for h, or height. PLZ help ASAP

Answers

Answer:

h=3V/πr²

Step-by-step explanation:

V= πr²h/3
πr²h=3V
h=3V/πr²

Answer:

3V / (pi r^2) = h

Step-by-step explanation:

V= pi r squared h/3

Multiply each side by 3

3V = pi r^2 h /3 * 3

3V = pi r^2 h

Divide each side by pi r^2

3V / (pi r^2) = pi r^2 h /( pi r^2)

3V / (pi r^2) = h

Find the area of the following parallelogram

Answers

Answer:

6 cm^2

Step-by-step explanation:

The area of a parallelogram is

A = bh where b is the base and h is the height

A = 3 *2 = 6 cm^2

Select the proper order from least to greatest for 1/2 ,5/6 , 2/7 , 4/2a) 4/2 , 5/6, 1/2, 2/7

b) 4/2, 2/7, /6, 1/2

c) 2/7, 1/2, 5/6, 4/2

d) 2/7, 5/6, 1/2, 4/2

Answers

C. 2/7, 1/2, 5/6, 4/2

23% of a number is 46 what is the number?

Answers

Every percent is 2. so if you do 2 multiplied by 100 then the answer is 200 so 200 is the number.

Please see the pic, I's solved in it.

When factored completely, the expression p^4-81 is equivalent to what?

Answers

differnce of 2 pefect squares
a^2-b^2=(a-b)(a+b)
(p^2)^2-9^2=(p^2-9)(p^2+9)

p^2-9=(p-3)(p+3)

factored is
(p-3)(p+3)(p^2+9)

Hello,

p^4-3^4=(p²+9)(p²-9)=(p-3)(p+3)(p²+9) [in R]
[(maybe (p-3)(p+3)(p-3i)(p+3i) in C]

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