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Gelneren [198K]

3 years ago

6

Is this a parallelogram and why?

2 answers:

FinnZ [79.3K]3 years ago

6 0

Yes because it has equal parallel sides that are not perpendicular to each other

oksano4ka [1.4K]3 years ago

3 0

the rectangle is but the line is not because the line has to have another side !

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Daniela and Jack are hiking a steady incline. They use their GPS device to determine their elevation every 15 minutes. At 15 min

kow [346]

Answer:

$h=40t+9700$

where the elevation, h, is in feet and time, t, is in minutes.

Step-by-step explanation:

At the time, $t_1=15$ min, the elevation, $h_1= 10,300$ feet and

at the time $t_2= 30$ min, the elevation, $h_2=10,900$ feet.

As they are hiking a steady incline, so the change in the elevation with respect to time will be constant.

So, there will be a linear relationship between the elevation and the time.

Let $h$ be the elevation at any time instant $t$ , so the linear relation among these quantities is

$h=mt+C_0\;\cdots(i)$

where $m$ is the rate of change of elevation with respect to time and $C_0$ is constant.

The change in the elevation, $\Delta h=h_2-h_1= 10,900-10,300=600$ feet.

and the change in time, $\Delta t=t_2-1_1=30-15=15$ min.

So, change in the elevation in unit time,

$m=\frac{\Delat h}{\Delta t}=\frac{600}{15}=40$ feet/min.

Now, from equation (i)

$h=40t+C_0$

As the elevation, $h=h_1$ at time $t=t_1$ , so

$10,300=40\times15+C_0$

$\Rightarrow C_0=9700$

Hence, the required equation is

$h=40t+9700$

where the elevation, $h$ , is in feet and time, $t$ , is in minutes.

3 0

3 years ago

Melanie buys a carrying case for her new laptop computer. The retail price is $24.50 and the sales tax is 7%. What is the amount

Stella [2.4K]

The answer $1.72. you divide $24.50 by .07 and the answer comes out to $1.715 and then you round up and have 1.72

4 0

3 years ago

What number a is 70% of 70?<br> 70<br> 100

crimeas [40]

Answer:

49

Step-by-step explanation:

hope this helps!

7 0

3 years ago

Read 2 more answers

What integer values satisfy both inequalities? -1≤x<3 x<2

Margaret [11]

Answer:

okokokokkokkolkkokkk

5 0

3 years ago

Let f (x)=-3x+ determine f (-5)

loris [4]

F(x)=-3x
f(-5)=-3* (-5)
=15

hope ths help u !!!!!!!!!

^_^

6 0

3 years ago