A train covered first 120 km at a speed of 20 km an hour and then covered

the remaining 180 km at a speed of 45 km an hour. Find its average speed.​
stap by step explanation

Hello!

[tex]\large\boxed{x = 1}[/tex]

-x - 3 = 2x - 6

Begin by adding x to both sides:

-x + x - 3 = 2x + x - 6

-3 = 3x - 6

Add 6 to both sides:

-3 + 6 = 3x - 6 + 6

3 = 3x

Divide both sides by 3:

3/3 = 3x/3

x = 1.

Answer:

6

Step-by-step explanation:

Answer:

The answer is =22x²+2x

Step-by-step explanation:

2x(11x+1)

=22x²+2x

Answer:

8,3 y=3x+4

Step-by-step explanation:

The y intercept of line AB is 56/5 and the equation of the line CD is y = -7/5 x + 12.

Slope of a line is the ratio of the change in y coordinates to the change in the x coordinates of two points given.

Given A(8, 0) and B(3, 7).

Equation of line in slope intercept form is y = mx + c, where m is the slope and c is the y intercept.

Slope of AB = (7 - 0) / (3 - 8) = -7/5

Substituting in the equation,

y = -7/5 x + c

Substituting a point (8, 0) on the equation,

0 = (-7/5 × 8) + c

c = 56 / 5

Given AB parallel to CD.

Slope of parallel lines are equal.

Slope of CD is -7/5.

Equation of the line CD is y = -7/5 x + c.

Substituting (5, 5),

5 = (-7/5 × 5) + c

c = 12

Equation of CD is y = -7/5 x + 12

Hence the equation of line CD is y = -7/5 x + 12.

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Answer:

The answer is 4.06155281

Step-by-step explanation:

Answer:

Youe answer is (1,1,0)

Step-by-step explanation:

Hope that help.Have a great day!!Also Brainiest will be needed.

Answer:

Step-by-step explanation:

The answer is B. His budget is $250 so it has to be less than or equal to. $60 a crew member (x = the crew members) and $45 to use the forklift, so $60x + $45 is less than or equal to $250

Answer:

B is the correct answer.

Step-by-step explanation:

According to the problem, the contractor can spend AT MOST $250 a day, meaning $250 is the limit. Therefore, that gives you less than or equal too, or ≤. Next, it costs $45 a day, including $60, which you would add to get the final amount, or +.

Therefore, 60x + 45 ≤ 250

Step-by-step explanation:

Since 6 Pazzo dog food cost $25.50,

5 Pazzo dog food would cost $25.50 * 5/6 = $21.25.

Hence Michael would spend $21.25.

Answer:

$21.25

Step-by-step explanation: $4.25 for each bag so $4.25 x 5= $21.25

Answer:

18 gallons

Step-by-step explanation:

1/6 of container is 3 gallons

so 6/6 is 18 gallons

Hope this helps. Pls give brainliest.

Answer:

x = - 216

Step-by-step explanation:

x + 7 = -209

x = -209-7

x = -216

hope you got it.

Answer:

-216

Step-by-step explanation:

ur welcome

Answer:

2x - 9 = -5

2x = 4

x = 2

Answer:

The question makes no sense in my opinion

Answer:

y = - 2x

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = [tex]\frac{1}{2}[/tex] x + 3 ← is in slope- intercept form

with slope m = [tex]\frac{1}{2}[/tex]

Given a line with slope m then the slope of a line perpendicular to it is

[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{\frac{1}{2} }[/tex] = - 2

The perpendicular line passes through the origin ⇒ c = 0

The equation of line L₂ is

y = - 2x + 0 , that is

y = - 2x

Answer: 5 up 10 over

Step-by-step explanation:

I had this on my quiz

Answer:

-t-9

Step-by-step explanation:

=-5t+4t-12+3

=-t-9

Answer:

slope = 0

Step-by-step explanation:

Answer:

Slope:  0

Step-by-step explanation:

Slope:  0

y-intercept:  

( 0 , 3 )

Answer:

One hour after  starting

Step-by-step explanation:

Let Teri walk at a rate of 2 miles per hour in time , t + 0.5, since it is 30 minutes ahead and 30 minutes = 0.5 hours, the distance he moves is d = 2(t + 0.5). Also, since Cindy moves at a rate of 3 miles per hour, and starts at time t, the distance d' she moves is d' = 3t.

Now, when they catch each other, the distance moved is the same.

So, d = d'

2(t + 0.5) = 3t

expanding the brackets, we have

2t + 2 × 0.5 = 3t

2t + 1 = 3t

collecting like terms, we have

3t - 2t = 1

simplifying, we have

t = 1

So, Cindy will catch Teri one hour after starting.

Answer:

2.8

Step-by-step explanation:

this is my best guess

Answer:

because 25/100 = 1/4

0.20 = 20/100

Step-by-step explanation:

because 25/100 = 1/4

0.20 = 20/100

because 0.20 means 20 tenths 0.23 > 1/2

because 0.23 = 23

0.4 = 1/4

because they are on the same place on a number lin

9514 1404 393

Answer:

  Bob

Step-by-step explanation:

The "steepness," or slope, of the mountain is the ratio of height to horizontal distance to the base:

  Joe's mountain slope = 1200/1500 = 0.8

  Bob's mountain slope = 900/1000 = 0.9

Bob's mountain has a greater slope than Joe's. Bob climbed the steeper mountain.

Answer:

I'm not able to do it but I can tell you how

Step-by-step explanation:

make the 10a-9 equal 14a-25 solve for that a then use the answer to a to then plug in thst number in all of them and that would be your answer

The perimeter of the isosceles triangle is 88.

A triangle is a polygon with three sides and three angles. There are different types of triangles such as scalene, equilateral, isosceles and so on.

From the diagram, two sides of the triangle are equal, hence it is an isosceles triangle, hence:

10a - 9 = 14a - 25

4a = 16

a = 4

10a - 9 = 10(4) - 9 = 31

6a + 2 = 6(4) + 2 = 26

Hence the perimeter of the triangle = 31 + 31 + 26 = 88

Hence the perimeter of the triangle is 88.

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Answer:

B

Step-by-step explanation:

The range means y so it has to be b or d

and you see that it is -2 as lowest, 2 as highest value it can reach/cutoff at

please give thanks :)

Answer:

(a)SSS congruence of two triangles

Step-by-step explanation:

Congruence is a relationship that expresses the similarity between two triangles. The relationship between two triangles with their three sides being congruent is termed as the side-side-side (SSS) congruence property of the triangles. This implies that the two triangles are similar with respect to their three sides.

In corollary, since the three sides of the two triangles are congruent, then the three angles respectively would be congruent.

first you combine like terms

25m + 43,200 = 45,675 - 200m

then you add 200m to both sides

225m + 43,200 = 45,675

then you subtract 43,200 from both sides

225m = 2,475

then you divide both sides by 225

m = 11

Answer:

1 and four

Step-by-step explanation:

Answer:

1 and 4

Step-by-step explanation:

A vertical angle is one of two opposite and equal angles formed by the intersection of two lines.

1 and 4

2 and 3

5 and 8

6 and 7

are all answers

Answer:

i think that is false

Step-by-step explanation:

Answer:

-12p+p^2+36

Step by step explanation:

(-p+6)^2 is the square of -p+6

we use the formula

(a+b)^2=2ab+a^2+b^2

(-p+6)^2=-12p+p^2+36

the minus of p disappears

I think you meant to say the SQUARE ROOT.

sqrt{-p + 6}

If you meant to SQUARE THE BIMOMIAL, then the set up is:

(-p + 6)^2

(-p + 6)(-p + 6)

p^2 -12p + 36

Answer:

1a. 5x+14

1b. 5x+14 < 65

1c. x=51/5

Step-by-step explanation:

Answer:

226 tons of seed......