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Sholpan [36]
3 years ago
11

PLZZZZZZZZZZZZZZZZZZZZZZ HELP! -3x+4=-2 show your work!!!

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
5 0

Answer:

x=2

Step-by-step explanation:

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Paul drove 225 miles to visit his parents. The graph below shows the distance traveled and the total time of the trip. Write and
ziro4ka [17]

50mph

Step-by-step explanation:

The image of the motion of Paul's derive is attached already.

From the line graph we can obtain a lot of information that will help us unravel the average speed of Paul within the given time frame.

What is average speed?

 Average speed is the rate of change of total distance covered with time taken .

Average speed = \frac{total distance }{time}

To find the total distance covered;

 Distance at time 1 = 75miles

  Distance at time 4 = 225miles

Distance covered between 1 - 4 = 225 - 75 = 150miles

Time taken for the journey = 4 - 1 = 3hrs

Input the values in the equation;

   Average speed = \frac{150}{3} = 50mph

learn more:

Speed and motion brainly.com/question/10048445

#learnwithBrainly

5 0
3 years ago
Arrange the parabolas represented by the equations in increasing order with respect to the y-values of their directrixes.
Alexus [3.1K]
(x-h)^2=4P(y-k), vertex is (h,k)
P is distance from vertex to directix
remember to subtract P from the y value of the vertex (p-k) and that y value is the directix, y=p-k

nut
ok so one way is to just graph them on a graphing utility
remember if the graph opens up, then the directix is below that
or we can convert to 4P(y-k)=(x-h)^2 form where P is distance from directix

I will only convert the 1st one fully, you should be able to do the rest

1. y=-x^2+3x+8
multiply both sides by -1 since we don't like the x^2 term negative
-y=x^2-3x-8
add8 to both sides
-y+8=x^2-3x
take 1/2 of linear coeficient and square it and add to both sides
-3/2=-1.5
 (-1.5)^2=2.25
-y+10.25=x^2-3x+2.25
factor perfect square
-y+10.25=(x-1.5)^2
force undistribute -1 in left side
(-1)(y-10.25)=something, we don't care anymore for now
factor out a 4 in -1
4(-1/4)(y-10.25)

k=10.25
p=-1/4=-0.25
directix=k-p=10.25-(-0.25)=10.5
directix is y=10.5

basically completee the square with x and find P by force factoring a 4 out

2.  directix: y=-1.75

3. directix: y=1.5

4. directix: y=17.25

5. d: -37.5

6. d: 9.25

7. d=2.625

order them yourself

7 0
3 years ago
The first term of a sequence is13<br> The term to term is take away 5<br> work out the 4th term
stepladder [879]

Answer:

-2

Step-by-step explanation:

13

8

3

-2

5 0
3 years ago
Read 2 more answers
Which of the following is equivalent to (2x+3)(x-7)?
maw [93]
I’m pretty sure it’s it’s between f and g. Sorry if I’m not exact but hope this helps
8 0
3 years ago
Mary rolls two dice. She adds the numbers on the two dice. What is the chance of this sum being twelve?
jonny [76]

Answer:

10%

Step-by-step explanation:

sorry if u fail yeahh

5 0
3 years ago
Read 2 more answers
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