All categories

3 years ago

Am doing some free pts give away today... so be the first to ans ok

SAT

2 answers:

MAVERICK [17]3 years ago

5 0

Aw thx! Have an awesome day and weekend of thanksgiving!

Mnenie [13.5K]3 years ago

3 0

Answer:

thanks

Explanation:

You might be interested in

Which of the following did not cause the reduction in sulfur dioxide emissions from Sudbury's smelters?

Crazy boy [7]

Hi. :)

I think the answer is B. Passing regulations requiring reductions in sulfur dioxide emissions.

4 0

3 years ago

What is the value of X?

nevsk [136]

Answer:

x = 7

Explanation:

Because 25 is a perfect square of 5, we can turn

$5^{3x - 5}$ = $25^{x + 1}$

into

$5^{3x - 5}$ = $5^{2x + 2}$

Since the bases are now both equal, we can completely ignore them, as we are only trying to find x. This leaves us with:

3x - 5 = 2x + 2

All we have to do now is solve for x:

x - 5 = 2 Subtract 2x from both sides.

x = 7 Add 5 to both sides.

Hope this helps! :)

6 0

3 years ago

Read 2 more answers

1) What percent of 440 is 369?

zimovet [89]

Answer:

119.24

Explanation:

Step 1: We make the assumption that 369 is 100% since it is our output value.

Step 2: We next represent the value we seek with x.

Step 3: From step 1, it follows that 100%=36.

Step 4: In the same vein, x% = 440.

Step 5: This gives us a pair of simple equations:100%=369(1) 440(2) = x%

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS(left hand side) of both equations have the same unit (%); we have 100%/x% = 369/440

Step 7: Taking the inverse (or reciprocal) of both sides yields x%/100% = 440/369

Therefore, 440 is 119.24% of 369.

4 0

2 years ago

To compare the average amount of time that canadians and americans spend commuting, a researcher collects a sample of canadians

yKpoI14uk [10]

The standard error of the difference of sample means is 0.444

From the complete question, we have the following parameters

Canadians

Sample size = 50
Mean = 4.6
Standard deviation = 2.9

Americans

Sample size = 60
Mean = 5.2
Standard deviation = 1.3

The standard error of a sample is the quotient of the standard deviation and the square root of the sample size.

This is represented as:

$SE = \frac{\sigma}{\sqrt n}$

The standard error of the Canadian sample is:

$SE_1 = \frac{2.9}{\sqrt{50}}$

So, we have:

$SE_1 = 0.41$

The standard error of the American sample is:

$SE_2 = \frac{1.3}{\sqrt{60}}$

So, we have:

$SE_2 = 0.17$

The standard error of the difference of sample means is then calculated as:

$SE= \sqrt{SE_1^2 + SE_2^2}$

This gives

$SE= \sqrt{0.41^2 + 0.17^2}$

$SE= \sqrt{0.197}$

Take square roots

$SE= 0.444$

Hence, the standard error of the difference of sample means is 0.444