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Vikentia [17]
2 years ago
5

10x+2=9x3 what is the answer

Mathematics
1 answer:
yKpoI14uk [10]2 years ago
6 0

Answer:

8.5

Step-by-step explanation:

10x+2=9x(3)

10x+2=27x

2=17x

x=8.5

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X^2+36y^2. What is answer
const2013 [10]
The answer is already in its simplest form. You can not add the two because the have different variables. Hope this helps ;)))
3 0
3 years ago
The quantities x and y are proportional.
irga5000 [103]

Answer:

r=1/4

Step-by-step explanation:

y=1/4*x

2=1/4*8

1/4*8=2

8 0
3 years ago
Read 2 more answers
A geologist examines 14 geological samples for iron concentration. The mean iron concentration for the sample data is 0.181 cc/c
kykrilka [37]

Answer:

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*\frac{0.0318}{\sqrt{14}} = 0.0140

The lower end of the interval is the sample mean subtracted by M. So it is 0.181 - 0.0140 = 0.167 cc/m³.

The upper end of the interval is the sample mean added to M. So it is 0.181 + 0.0140 = 0.195 cc/m³.

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

3 0
3 years ago
Jim gets a weekly allowance he keeps $8 for spending money saves $5 and gives $2 to charity how much is Jim's weekly allowance
olga55 [171]

Step-by-step explanation:

$15

He keeps 8. He saves 5 so 8+5=13

He also gives $2 to charity.

8+5+2= $15

3 0
3 years ago
Graph the following pair of quadratic functions and describe any similarities/differences observed in the graphs.
horsena [70]

Answer:

The answer is a. both open upward; h is wider than f

7 0
2 years ago
Read 2 more answers
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