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Tanzania [10]
3 years ago
14

Find the solution of 4(x+3)=2(2x+9)

Mathematics
2 answers:
blagie [28]3 years ago
7 0

Answer:

0=6       so there is no solution

Step-by-step explanation:

4(x+3)=2(2x+9)

expand the brackets

4x+12=4x+18

-12 on both sides

4x=4x+6

-4x on both sides

0=6

Phoenix [80]3 years ago
5 0

Answer:

There are no solutions to this question.

Step-by-step explanation:

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michael has 40 coins worth 8.20. consisting of 10 cents and 25 cents . how many of each coins does he have ?
devlian [24]

Answer:

2 dollars I guess l d k

Step-by-step explanation:

pay subcription to get good answer k :)

5 0
3 years ago
Wind farm configuration is a significant issue as the upwind turbines generate maximal energy while creating wakes for downwind
lord [1]

Answer:

a) [24.114,29.2858]

b) Since 30 is not in the 95% confidence interval, there is a 95% probability that 30 is not the true mean WEP

Step-by-step explanation:

a)

The 95% confidence interval is given by the interval

\bf [ \bar x-z^*\frac{s}{\sqrt n}, \bar x+t^*\frac{s}{\sqrt n}]

where

\bf \bar x= 26.7 is the sample mean  

s = 17.7 is the sample standard deviation  

n = 180 is the sample size

Since the sample size is big enough, we can use the Normal N(0,1) to compute \bf z^* and it would be 1.96(*) (a value such that the area under the Normal curve outside the interval [-z, z] is 5% (0.05))

and our 95% confidence interval is

\bf [26.7-1.96*\frac{17.7}{\sqrt{180}}, 26.7+1.96*\frac{17.7}{\sqrt{180}}]=\boxed{[24.114,29.2858]}

(*)

This value can be computed in Excel with

<em>NORMINV(1-0.025,0,1)</em>

and in OpenOffice Calc with

<em>NORMINV(1-0.025;0;1)</em>

b)

Since 30 is not in the 95% confidence interval, there is a 95% probability that 30 is not the true mean WEP

7 0
3 years ago
Rex, Lassie, and Beethoven eat their dog foods at different rates, though each gets the same amount. Rex can finish his bowl in
sergij07 [2.7K]
So in the answer here beethoven ate 10000
7 0
3 years ago
What is the range of the function y=1+2 sin (x-pi)
Step2247 [10]

The sine has a range -1 to +1 so y goes from 1+2(-1) to 1+2(1) = -1 to 3

Range: -1 ≤ y ≤ 3


3 0
3 years ago
What is the degree of each polynomial?
GREYUIT [131]

Answer:

A- 4

B- 5

C- 8

D- 4

E- 2

F- 7

I'm 99% sure these are right!! I hope this helps :(

3 0
3 years ago
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