All categories

3 years ago

Assume the situations are proportional. Use the unit rate to write an equation, then solve.

1 answer:

5 0

The car would be 17 gallons of gas, because the unit rate is 34 miles per gallon. Divide 578 by 34, and there you go! You'll get 17, which is the gallons. You, my friend, have just solved for x.

You might be interested in

The pre–image, A, was dilated about the origin. It was then transformed in another way to get A'.

Elenna [48]

Answer:

reflection over the x-axis

Step-by-step explanation:

i hope this helps

6 0

3 years ago

Read 2 more answers

Use the distributive property to answer 9x19

Rus_ich [418]

Answer: 9x19=171

Step-by-step explanation:

Jon has 9times as many mm as lala has 19 more then jon.

6 0

3 years ago

See picture for question and details.

Elis [28]

Answer: 2,000 square feet

Step-by-step explanation: u don't need me cause u already have the answer but its simple :)

8 0

3 years ago

Can someone answer this please<br> Questions 19 and 21

Olegator [25]

Answer:

Wind speed

Another very old approach to measure wind speed is through the use of a pressure tube

Microbars per second

Earthquake intensity

The currently accepted method is the moment magnitude scale, which measures the total amount of energy released by the earthquake.

The Richter scale is used to determine the intensity of earthquakes

Step-by-step explanation:

3 0

2 years ago

Grades on a standardized test are known to have a mean of 1000 for students in the United States. The test is administered to 45

krok68 [10]

Answer:

The 95% confidence interval is $1003 < \mu$

Yes there is statistically significant evidence that students in Florida perform differently from other students in the United States

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 1000$

The sample size is $n = 453$

The sample mean is $\= x = 1013$

The standard deviation is $s = 108$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = 100 - 95$

=> $\alpha = 5\%$

=> $\alpha = 0.05$

The critical value for $\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{s}{\sqrt{n} }$

=> $E = 1.96 * \frac{108}{\sqrt{453} }$

=> $E = 9.946$

Generally the 95% confidence interval is mathematically represented as

$\= x - E < \mu < \= x + E$

=> $1013 - 9.946 < \mu < 1013 + 9.946$

=> $1003 < \mu$

Given that the population mean(1000) is not within the 95% confidence interval for l for the average test score for students in Florida, then it means that there is statistically significant evidence that students in Florida perform differently from other students in the United States

4 0

3 years ago