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iris [78.8K]
3 years ago
10

I need Answer Immediately!!!!!!

Mathematics
1 answer:
Zanzabum3 years ago
6 0
Y=-3x-6 that’s the answer
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Can someone please help me.
Art [367]

I will give you everything I can do:

11)

Lets say Car A travels at x mph. That means Car B travels at x+2 mph.

Both of them are traveling towards each others, so we can say the total speed is 2x+2.

Now i takes 3 hrs and we know the distance.

Since R*T=D

Then 3(2x+2)=270

So 2x+2=90

2x=88

x=44

12)

To find perpendicular we want to find the opposite reciprocal of the original slope. Therefore the slope is 3/2.

Now we must find the equation of the line with the given variable.

First find b.

5=3/2*4+b

b = -1

So the equation of this line is:

y=3/2x-1

13) All work will be shown below.

6-3(-2-4x)=2(3(x-4)+7)

6+6+12x=2(3x-12+7)

12+12x=2(3x-5)

12+12x=6x-10

6x=-2

x = -1/3

14)

First we must find the amount each train traveled.

The speed of F train(Freight train)=x

The speed of P train(passenger train)=x+6

Their combined speed is 2x+6

It takes 2 hrs to cover 100 miles

So 2(2x+6)=100

2x+6=50

2x=44

x=22

So the freight train covered 44 miles and the passenger train covered 56 miles.

To find average speed you must do Total Distance/Total Time.

44/2 and 56/2

Which are 22 and 28.

The average speed of F train is 22 mph and average speed of P train is 28 mph.

15) Again opposite reciprocal.

3/5 -> -5/3

Work:

-4=-3*-5/3+b

-4=5+b

b=-9

y = -5/3x-9

16)

F=kx-kx0

First kx0 = 0

So F=kx

So x=F/k

4 0
3 years ago
What is the least common multiple of 420 and 196?
maks197457 [2]

2940. To find LCM, listing the multiples may help. Then you will easily be able to view them and circle when you find a common one. :)
4 0
3 years ago
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Which polynomial does this sum of tiles represent?
Goryan [66]
U need to show an example of the tiles in order for people to answer this
8 0
3 years ago
Two trains leave stations 374 miles apart at the same time and travel toward each other. One train travels at 95 miles per hour
sveta [45]

2 hrs and 12 min or 2.2 hrs

5 0
3 years ago
Jack has a pin number that he uses to access his bank account. his code consists of 4 different numbers from 0 to 9. what is the
Tamiku [17]
For each choice of the first two digits you have 10<span> choices for the third digit. Thus you have 10x10x10 = 1000 choices for the first three digits. Finally you have </span>10<span>choices for the fourth digit and thus there are 10x10x10x10 = </span>10 000<span> possible 4 digit combinations from </span>0-9<span>.</span>
5 0
3 years ago
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