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3 years ago

True/False: 2(10x - 5) + 8 is an expression.

Mathematics

1 answer:

natka813 [3]3 years ago

8 0

Answer:

True

Step-by-step explanation:

Itis true because you don't have an equal sign. Expressions don't have an equal sign, equations have an equal sign.

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How much water and how much drink mix should Jerome use to make enough energy drink for all the runners? Create a table to show

kogti [31]

Answer:

Step-by-step explanation:

go to ur table

6 0

3 years ago

Read 2 more answers

Trains headed for destination A arrive at the train station at 15-minute intervals starting at 7:00 am, whereas trains headed fo

maks197457 [2]

Answer:

The answer to the question is 0.43. Let's explain why.

Step-by-step explanation:

A train arrives at the station at 15-minute intervals starting from 7:00 am which makes the train arrives at;

7:00

7:15

7:30

7:45

8:00

B train arrive at 12-minute intervals starting at 7:07 means B train arrives at;

7:07

7:19

7:31

7:43

7:55

Now, let's review the chances of a passenger arrives at the station any time between 7:00 am and 8:00 am

If the passenger arrives between 7:00 - 7:07 the passenger will get into B train which gives us the $\frac{7}{60}\\$ chance since an hour is 60 minutes and the passenger waited for 7 minutes.
If the passanger arrives between 7:07 - 7:15 passenger will get into A train which gives $\frac{8}{60}$ chance. If we apply this to the time limits it goes by;
Between 7:15 - 7:19 passenger will go to B destination which gives $\frac{4}{60}$ chance
Between 7:19 - 7:30 passenger will go to A destination means $\frac{11}{60}$ chance
Between 7:30 - 7:43 passenger will go to B destination means $\frac{13}{60}$ chance
Between 7:43 - 7:45 passenger will go to A destination which gives $\frac{2}{60}$ chance
Between 7:45 - 7:55 passenger will go to B destination means $\frac{10}{60}$ chance
An lastly between 7:55 - 8:00 passenger will go to A destination which gives us $\frac{5}{60}$ chance

Now for passenger to go to A destination the total chances are:

$\frac{8}{60} + \frac{11}{60} + \frac{2}{60} + \frac{5}{60} = \frac{26}{60}$ = 0.43

6 0

3 years ago

Which graph best represents the feasibility region for the system shown above? ( pics are in this)

zalisa [80]

Consider the system of inequalities

$\left\{ \begin{array}{l} y\ge 2 \\ x\le 6 \\ y\le 3x+2 \\ y\le -x+10. \end{array}\right.$

1. Plot all lines that are determined by equalities (see attached diagram)

$\left\{ \begin{array}{l} y=2 \text{ (red line)} \\ x= 6 \text{ (blue line)}\\ y=3x+2 \text{ (green line)} \\ y= -x+10 \text{ (orange line)}. \end{array}\right.$

2. Determine which bounded part of the plane you should select:

$y\ge 2$ means that you should take points with y-coordinates greater than or equal to 2 (top part of the coordinate plane that was formed by the red line);
$x\le 6$ means that you should take points with x-coordinates less than or equal to 6 (left part of the coordinate plane that was formed by the blue line);
for $y\le 3x+2$ you can check where the origin is placed. Since $0\le 3\cdot 0+2$ , the origin belongs to the needed part and you have to take the right part of the coordinate plane that was formed by green line.
for $y\le -x+10$ you can check where the origin is placed. Since $0\le -1\cdot 0+10$ , the origin belongs to the needed part and you have to take the bottom part of the coordinate plane that was formed by orange line.