.8

All percents are out of 100, so to figure out the answer you must make the denominator, or bottom number in your fraction, 100.

To get to 100, you would multiply 5x20, because that equals 100. Because you multiplied the denominator, which is 5, you must multiply the top number by 20 as well.

4x20 = 80

So therefore, the answer is 80/100, so .8

5 0

3 years ago

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Shana is climbing a mountain at a constant pace. She rises in elevation by 17.5 feet per minute. After hiking for 30 minutes, a

Mnenie [13.5K]

Answer:

The linear equation for Shana's elevation is $E = 17.5\cdot t+1640$ .

Step-by-step explanation:

According to the statement, we find that Shana is climbing at constant rate in time and height as a function of time can be represented by linear function:

$E = h_{o}+\dot h\cdot t$ (Eq. 1)

Where:

$h_{o}$ - Initial height above sea level, measured in feet.

$E$ - Elevation above sea level, measured in feet.

$\dot h$ - Climbing rate, measured in feet per minute.

$t$ - Time, measured in minutes.

If we know that $E = 2165\,ft$ , $\dot h = 17.5\,\frac{ft}{min}$ and $t = 30\,s$ . the initial height above sea level is:

$h_{o} = E - \dot h\cdot t$

$h_{o} = 2165\,ft-\left(17.5\,\frac{ft}{min} \right)\cdot (30\,min)$

$h_{o} = 1640\,ft$

The linear equation for Shana's elevation is $E = 17.5\cdot t+1640$ .

7 0

3 years ago

The difference between an expression and an_________ is that an expression does not contain an equal sign.

kvv77 [185]

Fill in the blank with equation.

An equation is nearly the same thing as an expression. However, the dofference is that equations have an = sign while expression do not.

8 0

3 years ago