Bonjour je suis en 3 ème pouvez vous m'aider s'il vous plaît une voiture met 2 h 30 pour faire 200 km 1. Calculer sa vitesse moyenne en km/h 2. Calculer la distance parcourue en a ) 3h 15 b) 42 min c) 3h 36 min 3. Calculer le temps mis pour parcourir 540 km

Answers

Answer 1

Répondre:

Explication étape par étape:

Vitesse = Distance / Temps

Distance donnée = 200 km

Durée = 2 h 30

Convertir le temps en heures

Depuis 60 minutes = 1h

2 heures 30 minutes = 2+ (30/60)

2h30 = 2 + 1/2 hors

2 heures 30 minutes = 2,5 heures

Vitesse en km / h = 200 km / 2,5 h

Vitesse en km / h = 80 km / h

D'où sa vitesse moyenne en km / h est de 80 km / h

a) Distance = Vitesse * Temps

Vitesse donnée = 80 km / h

Durée = 3h15

Temps = 3 15/60 h

Durée = 3,25 h

Distance = 80 * 3,25

Distance parcourue en 3h15 = 260 km

b) Distance = Vitesse * Temps

Vitesse donnée = 80 km / h

Durée = 42 minutes

Durée = 42/60 h

Distance = 80 * 42/60

Distance = 3360/60

Distance = 56 km

Distance parcourue en 42 minutes = 56 km

c) Distance = Vitesse * Temps

Vitesse donnée = 80 km / h

Durée = 3 h 36 minutes

Temps = 3 36/60 h

Durée = 3,6 h

Distance = 80 * 3,6

Distance = 288 km

Distance parcourue en 3 h 36 min = 288 km

d) Distance donnée = 540 km

Vitesse = 80 km / h

Temps = Distance / Vitesse

Heure = 540/80

Temps = 6,75 heures

Par conséquent, le temps nécessaire pour parcourir 540 km est de 6,75 heures


Related Questions

Find the coordinates of the midpoint of XY for X(-2,3) and T(-8,-9)

Answers

Answer:

Midpoint of XY = ( - 5, - 3)

Step-by-step explanation:

[tex]Midpoint \: of \: XY \\ = \bigg( \frac{ - 2 + ( - 8)}{2}, \: \frac{3 + ( - 9)}{2} \bigg) \\ = \bigg( \frac{ - 2 - 8}{2}, \: \frac{3 - 9}{2} \bigg)\\ = \bigg( \frac{ - 10}{2}, \: \frac{ - 6}{2} \bigg)\\ Midpoint \: of \: XY = ( - 5, \: - 3)[/tex]

M is between L and N. If LN = 91 and LM = 23, find MN.

Answers

Answer:

MN = 68

Step-by-step explanation:

LN = 91

LM = 23

Points L, M, and N are collinear, therefore, according to the segment addition postulate, the following can be deduced:

LM + MN = LN

23 + MN = 91 (Substitution)

Subtract 23 from both sides

23 + MN - 23 = 91 - 23

MN = 68

The box-and-whisker plot below
shows the test scores for the last
quiz. What is the interquartile range?
IS

40
50
60
70
80
90
100

Answers

Answer:

Interquartile range = 40

Step-by-step explanation:

interquartile range = Q3-Q1

It has 7 numbers, in order to make it even we remove the middle number (70) to make two sets of quartiles

Q1 = 50 (middle of the lower quartile)

Q3= 90 (middle of the higher quartile)

A mathematical sentence without an equal sign. pick from one of these: Absolute Value Distributive Property Equation Evaluate Equivalent Simplify Expression Integers Like Terms Inequality Reciprocal Coefficient Variable Solution Ratio

Answers

Answer:

expression

Step-by-step explanation:

hope this helps

Find the value of x. If someone could help me, please

Answers

Answer:

8      x = 17

9      x = 36

10     x = 10

Step-by-step explanation:

8

(6x + 5) + (4x+5) = 180

6x + 4x = 180 - 5 - 5

10x = 170

x = 170/10

x = 17

9

2x + 1 = 73

2x = 73 - 1

2x = 72

x = 72/2

x = 36

10

(3x+7) + 53 = 90

3x = 90 - 53 - 7

3x = 90 - 60

3x = 30

x = 30/3

x = 10

Answer:

8) i have no clue

9) x=36

10) x=10

Step-by-step explanation:

9) 73-1=72

72/2=36

x=36

10) 3x+7

90-53=37

37-7=30

30/3

x=10

what is 5 ÷ ⅔ I really need help guys

Answers

Why do I need to type so much? Anyway it’s 7.5

Answer:the answer is 7.5 if you need to round it up it’ll be 8 if you need it as a fraction it’ll be 7 1/2

Step-by-step explanation:

The sum of five consecutive integers is five. What is the product of the five integers?

Answers

Answer:Let n = the smallest integer

Then the other integers are n+1, n+2, n+3 and n+4

Sum = n + n+1 + n+2 + n+3 + n+4 = 5n + 10 = 5(n + 2)

So the sum is always divisible by 5, for any value of n

Step-by-step explanation:

What is shrek’s ultimate life form

Answers

shrek himself is the ultimate life form

Answer:

This is Shreks ultimate form.

Step-by-step explanation:

This is Shreks ultimate form.

Y=Mx+B what would m be

Answers

m would represent the slope. for example if your equation was y=5x+9, 5 is your slope and 9 is the y intercept

g(x)= 2x-4
f(x)= -3x-4
Find (g • f)(x)

Answers

Answer:

Step-by-step explanation:

(2x - 4)(-3x -4)

-6x^2 - 8x + 12x + 16

-6x^2 + 4x + 16

whats 4x4 +65x67-5+8+9=

Answers

the answer would be 4,383

4,383  I hope I got that right, Hope it helps!

add 3 on both sides
divide 5 on both sides
x=2

Answers

Can I see a picture to solve it?
Picture to do it por favor

Aaron puts $1,000 in an account that pays 10% interest compounded quarterly. He leaves it in the account for six months. Estimate how much interest he earns.

Answers

Answer: $50.63 --- Interest

Step-by-step explanation:

Step 1

Using the formulae

A = P(1 + r/n)^nt

Where

A = principal + interest Amount

P = Principal Amount = $1000

t = Time  in years= 6months = 0.5 years

n = number of compounding periods= quarterly =4

Step 2

6 months = 6/12 = 0.5 years

Rate = 10 % = 0.1

A = P(1 + r/n)^nt

= 1000 ( 1 + 0.1/4)^(4 x 0.5)

=1000(1 +0.025)^2

= 1000(1.025)^2

= 1000 x 1.050625

A= $1,050.625

but A = principal + interest Amount

Interest = A- Principal=$1,050.625-$1,000

=$50.625

0.018 ÷ 0.03. NO WRONG ANSWERS OR ELSE WILL REPORT. IF CORRECT WILL MARK U AS BRAINILIST

Answers

I think 0.6 should be the right answer
Wait is that 0.03.
Or 0.03

Solve the equation below. -1/5x-18=2

Answers

1 Simplify
1
5
x
​5

​1
​​ x to
x
5
​5

​x
​​ .

x
5

1
8
=
2

​5

​x
​​ −18=2

2 Add
1
8
18 to both sides.

x
5
=
2
+
1
8

​5

​x
​​ =2+18

3 Simplify
2
+
1
8
2+18 to
2
0
20.

x
5
=
2
0

​5

​x
​​ =20

4 Multiply both sides by
5
5.

x
=
2
0
×
5
−x=20×5

5 Simplify
2
0
×
5
20×5 to
1
0
0
100.

x
=
1
0
0
−x=100

6 Multiply both sides by

1
−1.
x
=

1
0
0
x=−100

Consider M, N, and P. collinear points on MP. What is the difference between the ratio MN:NP and the ratio MN: MP?​ PLEASE HELPPPPPPP

Answers

Answer:

The amount between each. Since you didn't attachment any further information like the amount of M, N, and P or a graph chart- I'll only be able to give an example.  

Let's say M is equal to 3, N is equal to 1, and P is equal to 2. All together these spaces add up to 6 which can be evenly space out or distributed unevenly.  

Like M:N= 3:1 or N:P = 1:2. As you can tell all together (all you have to do is add 3&1 or 1&2) you'll get the result of 4 or 3 and they aren't similar. Let me know if this helps!  I know sometimes seeing technically terms and numbers can be difficult so I tried to explain with words as best I could. Good luck to you.

Add then divide.
Evaluate
(7.3 X 10) + (2.4 X 107)
(4 X 104)

Answers

Answer:

6.0 x 10^2

Step-by-step explanation:

(7.3 X 10) + (2.4 X 10^7)

(4 X 10^4)

= 73 + 24000000

40000

= 24000073

40000

= 6.0 x 10^2

Which statements are biconditional? Check all that apply.
All triangles and rectangles are polygons.
Sam bakes cookies or he bakes bread.
If it is fashionable, then this store sells it.
If the sun rises in the east, then it is morning, and if it is morning, the sun rises in the east.
Victoria will play outside if and only if the weather is nice.

Answers

The statements that are biconditional include:

If the sun rises in the east, then it is morning, and if it is morning, the sun rises in the east.

Victoria will play outside if and only if the weather is nice.

What is a biconditional statement?

A biconditional statement combines a conditional statement with its inverse. As a result, one conditional is true if and only if the other is also true. It frequently employs the phrase "if and only if" or the abbreviation "if." The double arrow indicates that the conditional must be true in both directions.

Examples are that if and only if the polygon is a quadrilateral, it has four sides. If and only if the polygon has four sides, it is a quadrilateral. If and only if the quadrilateral is a square, it has four congruent sides and angles.

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round the numbers to estimate the quotient 29 1/5 divided by 4 6/7

Answers

Answer:

The anwser is 6.01176470588

I need help ASAP, due in an hour. Will give 5 stars and brainiest to the first person.

Answers

Answer:

5n is a term= true

3m and 5n are NOT like terms=true

these are the correct answers

Step-by-step explanation:

these are the wrong ones

a variable would be m or n

coefficients would be 3 and 5

4 solve the equation below 5 =g/4

Answers

Answer:

g = 20

Step-by-step explanation:

multiply both sides by 4 to get g = 20

Answer:

g=20

Step-by-step explanation:

multiply both sides by 4

If these two trapezoids are similar, what is the measure of the missing angle?
90°
1150
900
65°
Answer:
degree.

Answers

the answer is would have to be 900

The measure of the missing angle in the similar trapezoid is 90°.

In the given trapezoid the measure of angles are 90°, 115°, 90° and 65°.

What are similar figures?

Similar figures mean when two figures are of the same shape but are of different sizes. In other words, two figures are called similar when they both have a lot of the same properties but still may not be identical.

Given that, the two trapezoids are similar

Here, the measure of the missing angle in the other trapezoid is 90°

Therefore, the measure of the missing angle in the similar trapezoid is 90°.

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Which function has an inverse that is a function?
b(x) = x^2 + 3
d(x) = -9
m(x) = -7x
px) = |x|

Answers

Answer:

Its going to be C on 2020 edg

Step-by-step explanation:

which expressions are equivalent to 2? Choose ALL that apply. 6 6 6 6 6 6 2.2.2.2.2.2 2.6 4.16 12 - 12 8.8​

Answers

Answer:

2,4,6,8,12,16

Because it is 2 times 3 equals 6

2 times 1 equals 2

2 times 2 equals 4

2 times 8 equals 16

2 times 3 equals 6  

2 times 4 equals 8

2 times 6 equals 12

and they are all a factor of 2

. Jane made a door frame for the house but does not have a tool to measure the angles. How can she check that the corner is 90 degrees?

Answers

She can use any square object around her. Since squares are made up of right angles, any side she chooses can be used to compare the angle of the door. If the square corner fits perfectly, the angle is 90. If the square fits with space, obtuse. If the square doesn’t fit, acute

Answer:

She needs to measure the length of the diagonal and two sides of the frame. Then she needs to find the square of each measure. If the sum of the squares of the two smaller sides equals the square of the diagonal, then she created a right triangle.  

Step-by-step explanation:

edg 2022

HELP ME PLZZ I DONT UNDERSTAND THIS!!!!!!

Answers

Answer:

1/2

Step-by-step explanation:

y =  kx

where k is the constant of proportionality

y = 1/2 x  so k= 1/2

Chloe wants to divide 600 jellybeans into equal groups. She wants each group to have more than 10 jellybeans, but less than 100. What are three possible groupings Chloe can make?

Answers

Answer:

8 groups of 75, 10 groups of 60, 12 groups of 50.

Step-by-step explanation:

600/12=50

600/10=60

600/8=75

The possible groupings are:

50 groups with 12 jellybeans each.

40 groups with 15 jellybeans each.

30 groups with 20 jellybeans each.

24 groups with 25 jellybeans each.

12 groups with 50 jellybeans each.

10 groups with 60 jellybeans each.

8 groups with 75 jellybeans each.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Chloe wants to divide 600 jellybeans into equal groups. She wants each group to have more than 10 jellybeans, but less than 100.

This means,

we need to find three numbers between 10 and 100 that are a factor of  600.

We  can have,

12, 15, 20, 25, 50, 60, 75

We can have,

50 groups with 12 jellybeans each.

40 groups with 15 jellybeans each.

30 groups with 20 jellybeans each.

24 groups with 25 jellybeans each.

12 groups with 50 jellybeans each.

10 groups with 60 jellybeans each.

8 groups with 75 jellybeans each.

These are the possible grouping we can have,

We can choose any three groupings.

Thus,

The possible groupings are:

50 groups with 12 jellybeans each.

40 groups with 15 jellybeans each.

30 groups with 20 jellybeans each.

24 groups with 25 jellybeans each.

12 groups with 50 jellybeans each.

10 groups with 60 jellybeans each.

8 groups with 75 jellybeans each.

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How to solve 2m - 3 = 13

Answers

Answer:

m=8

Step-by-step explanation:

Answer: m=8

Step-by-step explanation:

2m-3=13

Add 3 to -3 and 13 to cancel the number without a variable

-3+3=0 13+3=16

2m=16

Divide 2 on each side

2/2=0 16/2=8

M=8

given a right-angled triangle with perimeter 18. The sum of the squares of the three side lengths is 128. What is the area of the triangle ? ​

Answers

Answer:

9units²

Step-by-step explanation:

A triangle has 3 sides. Let the length of the three sides be a, b, c.

If the perimeter of the triangle is 18, then;

P = a+b+c

a+b+c = 18... 1

If the sum of the squares of the three side lengths is 128, this means;

a²+b²+c² = 128... 2

Since the triangle is also right angled, according to Pythagoras theorem;

c² = a²+b²... 3 (taking c as the hypotenuse)

Substitute equation 3 into 2;

(a²+b²)+c² = 128

c²+c² = 128

2c² = 128

c² = 128/2

c² = 64

c = √64

c = 8

Substituting c = 8 into 1

a+b+c = 18

a+b+8=18

a+b = 10 ...... 3

Substituting c = 8 into 2

a²+b²+c² = 128

a²+b²+8² = 128

a²+b²+64 = 128

a²+b²= 64..... 4

Solve equation 3 and 4 simultaneously;

a+b = 10

a²+b²= 64

From 4; a = 10-b

Substitute a = 10-b into 4;

(10-b)²+b² = 64

100-20b+b²+b² = 64

2b²-20b+100-64 = 0

2b²-20b+36 = 0

Divide through by 2:

b²-10b+18 = 0

b = 10±√10²-4(18)/2

b = 10±√100-72/2

b =( 10±√28)/2

b =(10±√4×7)/2

b = (10±2√7)/2

b = 5±√7

Hence b = 5+√7

If a+ b = 10

a+(5+√7 ) = 10

a = 10-(5+√7)

a = 10-5-√7

a = 5-√7

Area of the triangle A = 1/2 ab

A = 1/2 × (5+√7) × (5-√7)

A = 1/2 × (25-5√7+5√7-7)

A = 1/2 × (25-7)

A = 1/2 × 18

A = 9

Hence the are of the triangle is 9units²

A line segment has the endpoints U(4,8) and V(4, 6). Find the coordinates of its midpoint M.
Write the coordinates as decimals or intogor

Answers

Answer:

Step-by-step explanation:

(4 + 4)/2 = 8/2= 4

(8 + 6)/2= 14/2= 7

(4, 7) the midpoint

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