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4 years ago

solve each equation below. check for extraneous solutions. please help and show work because i have no idea how to do this

Mathematics

1 answer:

Naya [18.7K]4 years ago

4 0

Hi Pls find attached file for both solutions

Hope i did not do any calculation mistake:)

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Suppose that 10% of adults belong to health clubs, and 40% of these health club members go to the club at least twice a week. Wh

kozerog [31]

Answer:

4% of all adults go to a health club at least twice a week

Step-by-step explanation:

the proportion of adults who belong to health clubs is 10% that is 0.10

the proportion of these adults (health club members) go to the club at least twice a week is 40%, that is 0.40.

Thus, the proportion of all adults go to a health club at least twice a week is

0.10 × 0.40 = 0.04, that is 4%

3 0

3 years ago

Find the exact value of cos 120° in simplest form with a rational<br> denominator.

IRINA_888 [86]

Given:

cos 120°

To find:

The exact value of cos 120° in simplest form with a rational denominator.

Solution:

We have,

$\cos 120^\circ$

It can be written as

$\cos 120^\circ=\cos (90^\circ+30^\circ)$

$\cos 120^\circ=-\sin 30^\circ$ $[\because \cos (90^\circ-\theta)=-\sin \theta]$

$\cos 120^\circ=-\left(\dfrac{1}{2}\right)$ $[\because \sin 30^\circ=\dfrac{1}{2}]$

$\cos 120^\circ=-\dfrac{1}{2}$

Therefore, the exact value of cos 120° is $-\dfrac{1}{2}$ .

7 0

3 years ago

Click on the words to go to the picture

madam [21]

31 is the answer because you would do 5 x 3 an that's 15 and if it's squared u technically add 15 a second time

6 0

3 years ago

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Help please I beg u

MakcuM [25]

Answer:

56 i believe

Step-by-step explanation:

6 0

3 years ago

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a. Compute the gradient of ƒ and evaluate it at P. b. Find the unit vector in the direction of maximum increase of ƒ at P. c. Fi

DiKsa [7]

Answer:

The question has some details missing. Here is the given function ; f(x,y,z) = 1 + 4xyz at point P = (1,-1,-1)

Step-by-step explanation:

The detailed steps and appropriate calculation is as shown in the attached file.

6 0

3 years ago