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3 years ago

Which expression is equivalent to C^2-4/c+3 divided by c+2/3(c^2-9)

Mathematics

1 answer:

faltersainse [42]3 years ago

8 0

$\frac{ {c}^{2} - 4 }{c + 3} \times \frac{3( {c}^{2} - 9 )}{c + 2}$

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The president of Doerman Distributors, Inc., believes that 30% of the firm's orders come from first-time customers. A random sam

Tanzania [10]

Answer:

Step-by-step explanation:

p = .3

n = 150

p(bar ) = 1 - p = .7

$\sigma_p=\sqrt\frac{p(1-p) }{n} }$

$\sigma_p=\sqrt\frac{.3(1-.3) }{150} }$

=.037

b )

P ( .2 <p<.4 ) = P [ (.2 - .3) / .037 < z < ( .4 - .3 ) / .037 ]

= P [ (-2.7 < z < +2.7 ]

= .9965-.0035

= .993

c )

P ( .25 <p<.35 ) = P [ (.25 - .3) / .037 < z < ( .35 - .3 ) / .037 ]

= P [ (-1.35 < z < +1.35 ]

= .9115 - .0885

= .823

4 0

3 years ago

Help ! The answer is given but I need to explain how I got it

horsena [70]

Area ( If you know the circumference) :
C^2 / (4×3.14) Brackets are important!
So you have to type :
53.38^2/(4×3.14)
= 226.865

6 0

3 years ago

15 points work out ratio for x

BlackZzzverrR [31]

Answer:

x = 25

Step-by-step explanation:

x : (x+10) = 5:7

Fractional form

x / x+10 = 5/7

Cross multiply:

x * 7 = (x+10) * 5

7x = 5x + 50

7x - 5x = 5x + 50 - 5x

2x = 50

x = 25

Check:

25 : 25 + 10

25 : 35

25/35 = 5/7

If my answer is incorrect, pls correct me!

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-Chetan K

7 0

3 years ago

R 2x-6+3=6x-5 please help

frozen [14]

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$2x - 6 + 3 = 6x - 5$

$2x - 3 = 6x - 5$

$6x - 5 = 2x - 3$

Add sides 5

$6x - 5 + 5 = 2x - 3 + 5$

$6x = 2x + 2$

Subtract sides 2x

$- 2x + 6x = - 2x + 2x + 2$

$4x = 2$

Divide sides by 4

$\frac{4x}{4} = \frac{2}{4} \\$

$x = \frac{1}{2} \\$

_________________________________

CHECK :

$2( \frac{1}{2} ) - 3 = 6( \frac{1}{2} ) - 5 \\$

$1 - 3 = 3 - 5$

$- 2 = - 2$

Thus the solution is correct....

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3 0

3 years ago

Read 2 more answers

2x2-3x-5=0 using quadratic formula

saveliy_v [14]

This formula solve by discriminant (D=b^2-4ac)

4 0

3 years ago