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tensa zangetsu [6.8K]
3 years ago
9

Y2 – 3y + 2 = 0 solve buy factoring

Mathematics
1 answer:
ivolga24 [154]3 years ago
7 0

Answer:

y²-3y+2=0

=> y²-(2+1)y +2=0

=> y²-2y-y+2=0

=> y(y-2)-1(y-2)=0

=> (y-2)(y-1)=0

=> y = 2 or y= 1

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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:

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13) All work will be shown below.

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

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12+12x=6x-10

6x=-2

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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

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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

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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

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4 0
3 years ago
Write a cosine equation with the following properties:
Brums [2.3K]

Answer:

Write a cosine equation with the following properties: Amplitude: 3. Period: 2pi. Midline: 2. Phase shift: 4 units shifted left. In the form of: y=a cos b(x-h) +k.

4 0
3 years ago
There are
rusak2 [61]

Answer:

14,000 decigrams

Step-by-step explanation:

Hope this helps

(nice porygon-z pfp lol)

5 0
3 years ago
A line passes through the points (7, 10) and (7,20). Which statement is true about the line?
wariber [46]

Answer:The answer is It has no slope because x2 - x1 in the formula m=y2-y1-x2-x1 is zero, and the denominator of a fraction cannot be zero

Step-by-step explanation:

I did the quiz

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3 years ago
5. If Seca = 8/3, COSP<br> A.318<br> B.5/3<br> C. 8/3<br> D"/3
Shtirlitz [24]

Answer:

Cos a = 3/8.

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8 0
3 years ago
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