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4 years ago

Choose the value for which 2/a+8 is undefined

1 answer:

3 0

If the value is:

$\sf{\frac{2}{a+8}}$

Then it will be undefined when the denominator is equal to 0.

So set the denominator equal to 0

a + 8 = 0
a = -8

So when

$\huge{\boxed{\bf{a=-8}}}$

then the value will be undefined.

Just a note:

$\sf{\frac{x}{0}=}$ undefined

$\sf{\frac{0}{x}=0}$

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Cant find the answer

dedylja [7]

Answer:

Carter family = 25 hours

Davis family = 31 hours

Step-by-step explanation:

Let's say the number of hours the Carter family used their sprinkler is x and the number of hours the Davis family used their sprinkler for is y.

So combined:

x + y = 45 hours

and we are also told that:

40x + 15y = 1300 L

So we can do simultaneous equations to solve the problem.

With some rearranging, we can figure out that:

y= 45 - x

and by substituting that into the second equation:

40x + 15 (45 -x) = 40x + 675 - 15x = 1300L

25x = 1300 - 675

25x = 625

x = 25 = hours that the Carter family used their sprinkler

and we can substitute that back into the original equation to find how many hours the Davis family used their sprinkler so:

25 + y = 56

y = 31

The Davis family used their sprinkler for 31 hours whilst the Carter family used their sprinkler for 25 hours.

7 0

2 years ago

One year, there were about 3,000 institutions of higher learning in the U.S. (including junior colleges and community colleges).

olganol [36]

Thus an approximate 95% confidence interval for the average enrollment of all 60,000 faculty members in the two years prior to the survey. which implies that the given statement is true.

According to the statement

Average sample =3700

SD sample =6500

Sample size =400

EV average =3700

SE average =325

Population size =3000

The boundaries of the 68% confidence interval are then 1 standard error from the estimated average:

EV average+1⋅SE average =3700+1⋅325=3700+325=4025

EV average−1⋅SE average =3700−1⋅325=3700−325=3375

Thus an approximate 95% confidence interval for the average enrollment of all 60,000 faculty members in the two years prior to the survey. which implies that the given statement is true.

Learn more about PROBABILITY here brainly.com/question/24756209

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7 0

2 years ago

Write the function for the graph

lions [1.4K]

Answer:

f(x)=3 x (4)^x

Im pretty sure the answer is A.

Hope this is right .-. Sorry if its not

8 0

4 years ago