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Masja [62]
3 years ago
7

PLEASE EXPLAIN! Please explain this. Not just give answer. Solve each exponential equation using Logarithms.

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
5 0
3. Im pretty sure hold on 14^ =69 x-9
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What expression is not equivalent to this expression: 75a + 50b
nadya68 [22]
25(3a+2b)
Factor out 25 from the expression
4 0
2 years ago
It is assumed that the mean weight of a Labrador retriever is 70 pounds. A breeder claims that the average weight of an adult ma
Sindrei [870]

Answer:

z(s) is in the acceptance region we accept H₀. We don´t have enough evidence to support the breeder´s claim

Step-by-step explanation:

We will test the breeder´s claim at 95% ( CI) or significance level

α = 5 %   α = 0,05    α /2 = 0,025

Sample Information:

sample size   n  = 45

sample mean   x  = 72,5 pounds

Sample standard deviation  s = 16,1

1.-Hypothesis Test:

Null Hypothesis                              H₀        x  =  70

Alternative Hypothesis                  Hₐ        x  ≠  70

Alternative hypothesis contains the information about what kind of test has  to be developed ( in this case it will be a two-tail tets)

2.-z (c) is from z-table     z(c) = 1,96

3.- z(s)  =  ( x - 70 ) / 16,1 / √45

z(s)  =  (72,5 -70 ) *√45 / 16,1

z(s)  = 2,5 * 6,71 / 16,1

z(s)  = 1,04

4.-Comparing  z(s) and z(c)

z(s)  <  z(c)

Then z(s) is in the acceptance region we accept H₀. We don´t have enough evidence to support the breeder´s claim

7 0
3 years ago
Read 2 more answers
Kimberly and Johannesburg are 460km/hour apart. A train covers the distance in 5 hours and 45 minutes. Determine the speed of th
FromTheMoon [43]

Answer: speed v= s/t = (460 / 5,75 )km/h

Step-by-step explanation: s= 460 km, t= 5h 45 min = 5,75 h

7 0
2 years ago
14.4% of what number is 10.4
Helga [31]
First, convert "of" to x and put this info into an equation:

Let n represent the unknown number.  

14.4 % x n= 10.4
              n = 10.4 / 14.4%
              n = 72.22222
              n = ~72

Hope this helps!
8 0
3 years ago
HELP ASAP!!!!!!<br> Which ratio is equivalent to this one?<br> 9/10<br> 16:20<br> 18:20
kvasek [131]

Answer:

18/20

Step-by-step explanation:

You just have to multiply by 2

8 0
3 years ago
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