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UkoKoshka [18]
3 years ago
12

( g(x)= 3 x²–2x-15 Find the domain of each function

Mathematics
1 answer:
iogann1982 [59]3 years ago
8 0

Answer:

the domain is infinite or all real numbers

Step-by-step explanation:

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Write an equation for the translation of x^2+y^2=25 by 7 units left and 2 units down
soldi70 [24.7K]
Your equation is a circle where the center is the origin (0, 0) and the radius is 5. With the translation, the new center is (- 7, - 2). Radius stays the same. 

Your new equation is:

(x + 7)² + (y + 2)² = 25
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2 years ago
WILL GIVE BRAINLIEST <br> PLEASE HELP!
Sindrei [870]

Answer:

1 2/18

Step-by-step explanation:

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2 years ago
Of all of the individuals who develop a certain rash, suppose the mean recovery time for individuals who do not use any form of
VashaNatasha [74]

Answer:

z(s) is in the rejection  region. We reject  H₀. We dont have enought evidence to support that the cream has effect over the recovery time

Step-by-step explanation:

Sample information:

Size     n = 100

mean   x = 28,5

Population information

μ₀  =  30

Standard deviation  σ   = 8

Test Hypothesis

Null Hypothesis          H₀                x =  μ₀

Alternative Hypothesis   Hₐ           x <  μ₀

We assume CI = 95 %   then α = 5 %    α = 0,05

As the alternative hypothesis suggest we should develop a one tail-test on the left ( we need to find out if the cream have any effect on the rash), effects on the rash could be measured as days of recovery

A z(c) for 0,05 from z-table is:  z(c) = - 1,64

z(s) = ( x - μ₀ ) / σ/√n

z(s) = ( 28,5 - 30 ) / 8/√100

z(s) = - 1,5 * 10 / 8

z(s) =  - 1,875

Comparing z(s)  and z(c)

|z(s)| < |z(c)|        1,875  > 1,64

z(s) is in the rejection  region. We reject  H₀. We dont have enought evidence to support that the cream has effect over the recovery time

3 0
3 years ago
Find last​ year's salary​ if, after a 4% pay​ raise, this​ year's salary is 31,720
adoni [48]

Answer:

30500.

Step-by-step explanation:

104%=31,720

100%=  x

\frac{(31720)(100)}{104}=30500

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1 year ago
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