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3 years ago

13

Choose the correct answer. Distance between 2 airports = 1,450 miles. Average speed of airplane = 350 mph. Travel time by bus af

ter arrival at airport = 20 minutes. Total travel time = _____ hours.
Please do not round

1 answer:

lukranit [14]3 years ago

3 0

The answer would be 4 hours 29 minutes (Total travelling time) 4.48 hours.

Hope this helps. :)

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Mary eats 5 bananas and an additional 2 bananas when she works out for 2 hours. Represent the number of bananas that she eats wh

ElenaW [278]

For this item, we let x be the number of hours she works out and y be the total number of bananas that she will be eating after the workout. The expression that best described the given above is,
y = 5 + 2x
5 is given as the y-intercept because of the initial condition.

8 0

3 years ago

At a bird-rescue compound, the American white pelican has a wingspan of

7nadin3 [17]

Answer:

25 inches

Step-by-step explanation:

To find the difference you need to substract one from another

110-85=25 inches

5 0

3 years ago

5x + 4y = 11<br> 2x + 6y = -7

olga55 [171]

$\left\{\begin{array}{ccc}5x+4y=11&|\cdot2\\2x+6y=-7&|\cdot(-5)\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+8y=22\\-10x-30y=35\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ \ \ \ \ \ -22y=57\ \ \ \ |:(-22)\\.\ \ \ \ \ \ \ \ \ \ \ y=-\dfrac{57}{22}\\\\substitute\ the\ value\ of\ y\ to\ the\ first\ equation\\\\5x+4\left(-\dfrac{57}{22}\right)=11\\\\5x-2\cdot\dfrac{57}{11}=11\ \ \ \ |\cdot11\\\\55x-114=121\ \ \ \ |+114\\\\55x=135\ \ \ \ |:55$

$x=\dfrac{135}{55}\\\\x=\dfrac{27}{11}\\\\Answer:\ x=\dfrac{27}{11}\ and\ y=-\dfrac{57}{22}\to\left(\dfrac{27}{11},\ -\dfrac{57}{22}\right)$

8 0

3 years ago

Evaluate A + 3B if possible. HELP ASAP!

madreJ [45]

Answer:

Not possible.

Step-by-step explanation:

Addition of Matrix A and Matrix B is possible only if the order of matrix A is same as the order of matrix B.

Order of a matrix with $m$ rows and $n$ columns is $m\times n$ .

Here, matrix A is $\left[\begin{array}{ccc}2&-4\\-4&10\\0&-8\end{array}\right]$

Matrix B is $\left[\begin{array}{ccc}0&-4&6\\2&-10&4\end{array}\right]$ .

Multiplying a matrix by a constant doesn't change its order.

So, order of matrix A is $3\times 2$ as it has 3 rows and 2 columns.

The order of matrix 3B is $2\times 3$ as it has 2 rows and 3 columns.

Therefore, addition is not possible as the order is different.

4 0

3 years ago

So if you went 24 laps, how many minutes would

Licemer1 [7]

Answer:

24 lap of?....

Step-by-step explanation:

probably 2 minz

4 0

3 years ago