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3 years ago

Which function has the domain x>or= -11

1 answer:

iogann1982 [59]3 years ago

6 0

I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:
$y = \sqrt{x + 11}$
Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.

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The fraction models below represent two fractions of the same whole. How much of the Fraction 5 over 8 is in the Fraction 1 over

IrinaVladis [17]

To find how much of 5/8 is you would need to divide 1/2 by 5/8:

X = (1/2) / (5/8)

When dividing fractions, you reverse the second fraction and multiply:

X = (1/2) x (8/5)

X = 8/10

Simplify:

X = 4/5

5 0

3 years ago

Read 2 more answers

Least to greatest 0.94,9.40,0.094,94.0,94.0

sertanlavr [38]

Here's an example number:
123.456
The place values are, from greatest to least:
The 1 is in the hundreds place
The 2 is in the tens place
The 3 is in the ones place
The 4 is in the tenths place
The 5 is in the hundredths place

If you have some number like 9.40 with no decimal point, shifting it will change the value. Moving the decimal one place to the right multiplies the value by ten. (94)
Moving it one place to the rigt divides it by ten. (0.94)

Here's our list from least to greatest:
94.0
9.40
0.94
0.094

5 0

3 years ago

A thermometer is taken from an inside room to the outside, where the air temperature is 20° f. after 1 minute the thermometer re

fomenos

The change in the temperature is proportional to the difference in temperatures. Let's call the initial temperature of the room and the thermometer $E_0$ and the current temperature $E(t)$ where $t$ is the elapsed time in minutes. The outside temperature is 20 F.

Newton's Law of Cooling:

$E(t) - 20 = (E_0 - 20) e^{- k t}$

We're given $E(1)=70 \textrm{ and } E(5)=45$

$70-20 = (E_0 - 20) e^{-k}$

$45-20 =(E_0 - 20) e^{-5k}$

Dividing,

$\dfrac{50}{25}=e^{4k}$

$k = \dfrac 1 4 \ln 2$

Now,

$E(t) - 20 = (E_0 - 20) e^{- k t}$

$E_0 = 20 + (E(t) - 20)e^{k t}$

$E_0 = 20 + (E(1) - 20)e^{k}$

$E_0 = 20 + (70 - 20)e^{\ln 2/4}$

$E_0 = 20 + 50 \cdot 2^{1/4} \approx 79.46 \textrm{ degrees F}$

3 0

4 years ago

What is the unit ratio of miles per gallon if a car drives 75 miles and uses 3 gallons of gas?

aliya0001 [1]

Answer:

75:3 is the original one. 3 goes into both numbers, so simplify by dividing/3

25:1 is the unit or 25 miles per gallon

3 0

3 years ago

Find the value of 49^-1/2 find the value of (27/125)^2/3

olasank [31]

Answer:

sex

Step-by-step explanation:

3 0

3 years ago