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Aloiza [94]
3 years ago
10

What is the difference between –11x – 2 and 13x + 5?

Mathematics
1 answer:
Charra [1.4K]3 years ago
5 0
<h2><u>Answer:</u></h2><h2><u></u>\boxed{-24x-7}<u></u></h2><h2><u></u></h2><h2><u>Solution Steps:</u></h2>

____________________________

<h3>1.) Find the opposite of 13x + 5:</h3>
  • To find the opposite of 13x+5, find the opposite of each term.
  • 13x=-13x
  • 5=-5

<em>  - We do this because when solving this they are in parenthesis, so you must get rid of the parenthesis by turning them negative. </em>

<u>Equation at the end of Step 1: </u>

  • <u />-11x-2-13x-5<u />
<h3><em /></h3><h3>2.) Combine −11x and −13x:</h3>
  • -11x+-13x=-24x

<em>  - We do this since we can only have on variable at the end of the problem, so you just combine them if they have the same variable base. </em>

<u>Equation at the end of Step 2: </u>

  • <u />-24x-2-5<u />
<h3><em /></h3><h3>3.) Subtract 5 from −2:</h3>
  • -2-5=-7

<em>  - We do this because we need one number left over to get a simplified version of this equation. </em>

<u>Equation at the end of Step 3: </u>

  • <u />-24x-7<u />
<h3 />

____________________________

<h3 />
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Is the following a function? (plz help ;-;)
pogonyaev

Answer:

Yes this is a function

Step-by-step explanation:

For every inout there is one output

4 0
3 years ago
| 9. The distance between Town A and Town B was 108 km. A car and a van left Town A at 12 00 for Town B. On reaching Town B, the
Westkost [7]

Answer:

a)  Time until both vehicles meet is 1.5 hours after starting at noon.  That makes it 1:30PM.

b)  Average speed of car is 84 km/h

Step-by-step explanation:

A -----------------------z------------B

          <u>Left</u>      <u>Speed(km/h)</u>      <u>Time</u>

Car:   12PM            X  

Van:   12PM           60

Car/Van

DistanceCar        AB + z

DistanceVan       Az

Ratio:                  (AB+z)/Az  = 7/5

Time until both meet = T (in hours)

Distance Car:            xT

Distance Van:           60T

====

  xT = AB + z

  60T = Az

---

(xT/60T)= (7/5)

x = 60(7/5)

x = 84 km/h

=====

Time for car to reach B is:    time (hr) = 108 km/(84 km/h)

                                                 time = 1.286 hours

Distance for at 1.289 hours is:    distance (km) = (60 km/h)*(1.286 h)

                                                   distance = 77.14 km

At 1.286 hours, the car reverses direction.  The van is (108 km - 77.14 km) or 30.86 km away.

Add the distances travelled by both vehicles after the car reverses direction at 1.286 hours.  The sum will be 30.86 km when they meet, at time of T.

Car Distance + Van Distance = 30.86 km

T(84 km/h) + t(60 km)

They meet when they are 0 km apart, which can be modeled with the following equation:

Van travel Distance - Car Travel Distance = 0 starting at 1.286 hr.

Let <u>t</u> be the time <u>after</u> 1.286 hours that both vehicles meet/collide.

t*(60 km/h)  +  t(84 km/h) = 30.86 km

t(60+84) = 30.86 km

t(144 km/h) = 30.86 km

t = 0.2143 hr

Total time until the car and van meet is 1.286 hr + 0.2143 hr for a total of 1.50 hours.

=================

a)  Time until both vehicles meet is 1.5 hours after starting at noon.  That makes it 1:30PM.

b)  Average speed of car is 84 km/h

==============

<u>CHECK</u>

Is the ratio of the distance travelled by the car and the van until they meet in the ratio of 7/5?

Car distance is (1.5 hr)(84 km/h) = 126 km

Van distance is (1.5 hr)(60 km/h) = 90.0 km

Ratio is 126/90 or 1.4

Ratio of 7/5 is 1.4

<u><em>YES</em></u>

     

3 0
3 years ago
A hummingbird eggs’ mass is approximately 0.374 milligram. What is the mass of 4 Hummingbird eggs?
antoniya [11.8K]

it would be 1.496 milligrams. i hope this helps and i used a calculator

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3 years ago
Read 2 more answers
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zubka84 [21]

Answer:I’m going to say it’s A I apologize if it’s wrong

Step-by-step explanation:

Magnets are magnetic fields that compares together when attracted close to one another so that’s Why I’m choosing A because it’s close to what I think

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4 years ago
on a average saturday, 15/100 of tickets sold are child tickits. if there were 460tickits sold saturday, how many were sold to c
liraira [26]
The answer is 69, because 15% of 460 is 69

Hope this helps!
6 0
3 years ago
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