Mathematics High School

A train is traveling at a constant speed and goes 7.5 kilometers in 6 minutes. At that rate:




How far does the train go in 1 minute?
how far does the train go in 100 minutes?

Answers

Answer 1

Answer:

1.25 km in 1 minute

125 km in 100 minutes

Step-by-step explanation:

Find its speed in km/min by dividing the km by number of minutes:

7.5/6

= 1.25

So, the train goes 1.25 km in 1 minute.

Using this speed, find how far it goes in 100 minutes, by multiplying the speed by 100:

1.25(100)

= 125

So, in 100 minutes, the train goes 125 km.

Answer 2

a. The distance travelled by the train in 1 minute, at a constant speed is 1.25 kilometers.

b. The distance travelled by the train in 100 minute, at a constant speed is 125 kilometers.

Given the following data:

Distance = 7.5 kilometersTime = 6 minutes

To find how far (distance) the train go in 1 minute, we would use direct proportion:

7.5 kilometers = 6 minutes

X kilometers = 1 minute

Cross-multiplying, we have:

[tex]6 \times X = 7.5\\\\X = \frac{7.5}{6}[/tex]

X = 1.25 kilometers.

b. To find how far (distance) the train go in 100 minute:

Since the train travels 1.25 kilometers in 1 minute, we would multiply that distance by 100.

[tex]D(100) = 1.25 \times 100\\D(100) = 125 \; kilometers[/tex]

Distance = 125 kilometers.

Read more: https://brainly.com/question/18676621

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What is the y-intercept of the line that contains the point (3, –2) and is perpendicular to the line y = – 2/5 x + 3/5?

Answers

Y = 5/2x because the A value need to be the opposite reciprocal for a perpendicular line you then plug the point you are given into our new EQ which equals -2=(5/2)(3) + b (solving for b) and you get b = -9.5 so your new equation is y = 5/2x - 9.5 making your Y int -9.5

Find the two pairs of numbers whose LCM is the product of the numbers

help pls

Answers

Answer:

3 and 5

7 and 2

4 and 3

Step-by-step explanation:

3×5=15 and its LCM is also 15

7×2=14 and its LCM is also 14

4×3=12 and its LCM is also 12

f(x) = x2 - 460x + 42000

Answers

Answer:

y = -42000 + 460x + -1x2

Step-by-step explanation:

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Answers

Answer: (1) yes

Step-by-step explanation: if the last number doesn't repeat  it self

3. is no because the last numbers repeat it self

Which is a reasonable estimate for the area of a circle with a diameter of 1 meter?

Answers

A≈0.79m² (Hope this helps)

The answers choices are -2, -1/2, 1/2, and 2.

Answers

For this problem, I took two points - (1,1) and (2,-1) and then use the formula to find slope. So it would be -1-1/2-1 = -2/1, so I think it’s -2.

i think the answer is negative 2

Step-by-step explanation:

if you solve this by -1-1/ 2-1 equals 2/1 so i conckude that the answer is -2

Please help will give brainliest.

Answers

Answer:

x=(4,0)

y=(0,-6)

Step-by-step explanation:

Raise to the power:
[tex](-3y)^{4}[/tex]

Answers

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[tex]( { - 3y})^{4} = ({ - 3})^{4} \times ( {y})^{4} = [/tex]

[tex]81 \times {y}^{4} = 81 {y}^{4} [/tex]

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answer: 81y^4


explanation: you raise each term to the 4th power

for the first term “3” 3•3•3•3 = 81
for the second term “y” y^4

There are 4 boys and 2 girls from the seventh grade and 3 boys and 5 girls from the eighth grade in the math club. The math club sponsor will randomly pick one student from each grade level to represent the team.

What is the probability that both will be girls?

Answers

Answer:

5/24 or 20.8%

Step-by-step explanation:

 

Probability that the 7th grader is a boy = number of boys/(total kids) = 4/(4+4) = 1/2

 

Probability that the 8th grader is a boy = 5/(5+7) = 5/12

 

Probability that both are boys = 1/2*(5/12) = 5/24 or 20.8%

Factoring trinomials
Select two for each

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Factors.

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Answers

Answer:

A. 42, 120, 162

Step-by-step explanation:

27 x 6 = 162

or

42 + 120 = 162

Use common factors to write two fractions equivalent to 6/42

Answers

Answer:

1.) 1/7      2.) 3/ 21= 1/7

Step-by-step explanation:

these are some fractions that are equivalent

Answer:

3/7 and 1/7

Step-by-step explanation:

WILL GIVE BRAINLIEST!!!!!!!!!
1. Use at least 2-3 sentences to explain how to find the measure of exterior angle of a triangle if you know the two remote interior angles.



2.Use at least 2-3 sentences to explain how to find the measure of an interior angle of a triangle when you are given the other two angle measures.

Answers

Answer:

Step-by-step explanation:

1). By definition of an exterior angle of a triangle,

  Measure of exterior angle of a triangle is equal to the sum of opposite two interior angles.

  From the figure attached,

  m∠4 = m∠1 + m∠2

2). Property of a triangle states that " sum of interior angles of a triangle is 180°"

   Therefore, m∠1 + m∠2 + m∠3 = 180°

What is the slope of the line on the graph?
1
1/2
2
3​

Answers

Answer:

2

Step-by-step explanation:

The line goes up 2 units and to the right 1 unit.

Finding angle measures using triangles

Answers

Because HI and JK are parallel, that makes their angles congruent. So angle K equals angle I
So the interior angles of a triangle add up to 180°
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Answers

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A.What is Angela's Unit rate
B.What is the unit rate

Answers

Answer:

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Answers

Answer:

It will take 135 minutes or 2 hours and 15 minutes

Step-by-step explanation:

What we need here is to get the total

amount in pounds of turkey to be cooked

each person eats 3/8 pound servings

Total pound per person would be 3/8 * 2 = 3/4 pound servings

From what we have, there are 15 people at the dinner,

The total pounds to cook will be

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Answers

Answer:

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Answers

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Brian skied for 0.75 hours at an average speed of 9.25
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Brian skied. Toni's work is shown below.
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X 0.75
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+ 6475
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What errors did Tori make when solving the problem?
Check all that apply.
She multiplied 5 and 925 incorrectly.
She did not correctly align the place values of the
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She did not place the decimal point correctly.
She added the partial products incorrectly.

Answers

Answer:

B,C,D

Step-by-step explanation:

I just took the question and got them all right

Answer:

B, C, D

Step-by-step explanation:

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Step-by-step explanation:

Answer:

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Answers

Answer:

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I hope this helps!

Answer:

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Answers

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Answers

Answer:

Question 1 is false. The left side 28 does not equal on the right side 41, which means that the given statement is false.

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Hope this helps :)

if any one answer this question i will give them brainliest
Calculate the correct solution to the equation -5x = -45

A:
x = -9
B:
x = 9
C:
x = 1/9
D:
x = -1/9

Answers

Answer:

x =9

Step-by-step explanation:

-5x = -45

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x = 9

Answer:

The answer is B X=9

Step-by-step explanation:

Divide each term in

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Answers

Answer:

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Hope this helps!

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Answers

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