PLZ NEED HELP NOW TAKING TEST 40 POINTS
Two trains are traveling between city A and city B a distance of 4000 kilometers (km). The regular train travels at a speed of 80 kilometers per hour (km/h). The express train leaves at the same time on a parallel track and travels at 100 km/h. The formula for speed (S) is S=D/T where S is speed, D is distance and T is time. How much earlier will the express train arrive at city B?

10 HOURS

40 HOURS

50 HOURS

90 HOURS

Answers

Answer 1

Answer:

40 hours

Step-by-step explanation:

first i want to know the answer i think it is 40 hours or 10 hours or 50 or maybe 90 hours

Related Questions

15 POINTS HELPPPP

1. Object B has more mass than Object A. How would the velocity of Object B change if you exerted
the same strength force on Object B as you did on Object A? Why?

Answers

im late do you still need the answer aa it wont send hope that helps

Is it already due????????

I need help solving this practice math problem

Answers

I think it’s D but I’m srry if u get it wrong

Hello Pleasa help ASAP !!!!

Answers

Would have to go with A.

Most of us have to invest in study time for recall at test time.

write a equation to find the "n" term of each sequence

1,3,5,7,....

Answers

Answer:

a1=1

d=3-1

an=a1+(n-1)d

=1+ (n-1)2

=1+2n-2

2n-1

n is an integer.
Write the values of n such that -15 < 3n < 6

Answers

Answer:

-5<n<2Thus ans(-4,-3,-2,-1,0,1)

Step-by-step explanation:

Divide all by 3 so that we can make n and find the value using sign

What is the total price of 2.6 pounds of pears at 90 cent per pound?

Answers

Answer:

It would be $2.34

Step-by-step explanation:

2.6x90=234 but in this case it is money so add a decimal

Solve the system of linear equations by substitution. 4x−2y=14 y=12x−1

Answers

Answer:

Step-by-step explanation:

I need this by tomorrow! please help me, I'm desperate. I dont understand it well.

Answers

Buy gas before you leave

what is everyones favorite UNDERTALE character

Answers

Answer:

flowey the flower (aka: Asriel Dreamer)

Step-by-step explanation:

Answer:

papyrus flowery

Step-by-step explanation:

Can some one plz help fast F=-m+B/q^3

Answers

whaaaa

aeeeee

eeeeee

sorreee

Pls help I’m bad at math no matter how much I try

Answers

Answer:

9/1 = 0.9

2 = 2.0

3 1/10 = 3.1

10 = 100

Step-by-step explanation:

Which One Doesn't Belong?
6(4 + 3)
418 + 14)
3(8 + 6)
18 + 24

Answers

418+14

The other ones all add up to 42

Hope this helps!

It should be the second choice

Which does the ratio 17:44 represent?

Answers

Answer:

Step-by-step explanation:

the part-to-whole relationship between homework help and sports

URGENT!!! PLEASE HELP (30 points !!!)

Use the line tool to graph the equation on the coordinate plane.

y=-3

Answers

the line with the arrows is where y=-3 is

x^2= 36/121 what is x?

Answers

Answer:

0.545436

Step-by-step explanation:

First convert the fraction into a decimal

36/121 is 0.2975

Then find the square root which is 0.545436

help quicklyy pleasee

Answers

Answer:

Step-by-step explanation:

Answer:

It is B.

Step-by-step explanation:

Hope this helped have an amazing day/month/year!

1) Work out the size of angle x.

2) Give reasons for your answer.

(15 points if correct)

Answers

Answer:

x= 75°

because 180°-105°=75°

HELP ME PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

For Which expression is of trinomial degree 1?
6+X-y
For what is the value of M
5

Ms. Agokeng is making a trip to Pennsylvania that is more than 250 miles. She has already driven 45 miles and is continuing her drive at 70 miles per hour. Which of the following inequalities represents the amount of time she has left in the car?

Answers

Answer:

The correct answer is A.) 45 + 70x < 250.

y = mx + b

She started at 45 miles (+ 45).

She has to go at least 250 miles (< 250).

She is driving at a constant, unchanging speed of 70 mph (70x).

i need help with this question...
2x + 3 ≤ 13

Answers

Answer: x ≤ 5

Step-by-step explanation:

x is greater than or equal to 5. you can subtract 3 from each side of the inequality, and then divide by 2. you then have the answer.

0 = 4x + 4 linear equation

Answers

Answer:

x = -1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define

0 = 4x + 4

Step 2: Solve for x

Subtract 4 on both sides: -4 = 4xDivide 4 on both sides: -1 = xRewrite: x = -1

Please please help please please

Answers

Answer:

A. 4/ 3

Step-by-step explanation:

With reference angle X

perpendicular (p) = 24

base (b) = 18

Now

tan X = p / b = 24 / 18 = 4 / 3

6∛I=
9∴ =
2² - y3=

Answer fast pls

Answers

Answer:

the last one is 4−y^3

the others i dont know sorry :(

Next Question!!? Help please... <3

Answers

Answer:

x=4 and y=0

Step-by-step explanation:

Sub x-4 in for y:

2x+4(x-4)=8

2x+4x-16=8

6x=24

x=4

y=x-4

y=4-4

y=0

Y = 4

X = 0

Answer is 8

What is the midpoint of the segment shown below?
10
(-1,5)
O A. (-3.3)
B. (-7,3)
. 10
10
(-6, -2)
O C. (-7, )
O D. (
-3)
10
SUBMIT

Answers

Answer: D. (-7/2,3/2)

Step-by-step explanation: (apx)

The midpoint of the segment shown below is option D. (-7/2, 3/2).

What are the Coordinates?

Coordinates are the set of points in a geometrical plane or space, which is used to denote the exact point in the coordinate plane or space.

Given a line segment with the given coordinates for the end points.

Midpoint of a segment with end points (x, y) and (x', y') is,

Midpoint = ((x + x') / 2, (y + y') / 2)

Here the end points of the segment are (-6, -2) and (-1, 5).

Midpoint of the segment = ((-6 - 1) / 2, (-2 + 5) / 2)

= (-7/2, 3/2)

Hence the mid point of the segment is (-7/2, 3/2).

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Dwight is selling flowers and candles for a school fundraiser. Flowers, x, sell for $7 for a bouquet, and candles, y, sell for $5. each. If he wants to sell at least $200 worth of flowers and candles, which inequality represents the situation where he sells x flowers and y candles?

A: 7x + 5y 200
C: 7x + 5y ≤ 200
D: 7x + 5y ≥ 200

Please explain why the right answer choice is correct. Thanks.

Answers

Since he wants to sell AT LEAST 200, the number he is selling must be greater than or equal too the number of flowers and candles. Therefore you would need the greater than and equal sign, with the open end being towards the 7x + 5y.
The Answer is D

Answer:

D: 7x + 5y ≥ 200

Step-by-step explanation:

If flowers sell for $7 and candles sell for $5, we can write those as 7x and 5y. Now, our inequality is 7x + 5y __. The words "at least" can translate to greater than or equal to. The symbol for that is ≥. Now, he wants to sell at least $200 worth of goods. That means we can write our inequality as 7x + 5y ≥ 200.

Select the reason why these triangles are
similar. If they are not, select "Not similar".
Α. ΑΑ
B. SAS
C. SSS
D. Not similar

Answers

Answer:

not similar

Step-by-step explanation:

similar means proportional

1, 1, and 0.5 are not proportional to 3.5, 3, and 2.25

As the two side lengths of the smaller triangle is the same but the ratio of those side in a larger triangle and the smaller triangle is different they are, D. Not similar.

What is congruency?

We know two similar planer figures are congruent when we have sides or angles or both that are the same as the corresponding sides or angles or both.

We know two triangles are similar if the ratios of their corresponding sides are equal.

The larger triangle has sides 3, 3.5, and 2.25.

And the smaller triangle has sides 1, 1, 0.5.

As the smaller triangle has side lengths 1, 1, and the ratio of the sides of the larger triangle and the smaller triangle is (2 + 1)/1 and (2.5 + 1)/1 which is equal to 3/1 and 3.5/1 3 and 3.5 but the smaller side has 1 and 1, therefore, they are not similar.

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Samuel deposits $100 in a high-interest account that has an interest rate of 10% compounded annually. Samuel decides to neither add to nor withdraw money from the account for the next 10 years. How much will be in his account in 3 years? How long will it take to accumulate $61 in interest?

Answers

After 3 years, $130 will be in his account. 100(1.3) = 130. To get $61, it will take 6.1 years, or 6 years and 2 months.

Answer:

In 3 years, the value of Samuel’s account will be approximately $133

It will take about 5 years for Samuel’s account to earn $61 in interest.

Step-by-step explanation:

edmentum

36. Write the triangle congruence criterion illustrated
by each pair of triangles.

Answers

Answer:

A - ASA

B - ASA

C - SAS

D - SSS

Step-by-step explanation:

I hope this helps you out!

Use similar triangles to calculate the height, h cm, of triangle ABE.
10 cm
D
36 cm
X
h
A А
E
20 cm

Answers

Answer:

h = 24 cm

Step-by-step explanation:

By using the similar triangle property in the given triangles,

Since, ΔBCD ~ ΔBAE

Their corresponding sides will be in the same ratio,

[tex]\frac{BC}{BA}= \frac{CD}{AE}= \frac{BD}{BE}=\frac{a}{h}[/tex]

[tex]\frac{CD}{AE}=\frac{a}{h}[/tex]

[tex]\frac{10}{20}=\frac{(36-h)}{h}[/tex]

10h = 20(36 - h)

10h = 720 - 20h

30h = 720

h = 24 cm

Therefore, height h = 24 cm is the answer.

Answer:

Step-by-step explanation:

I took the test

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