All categories

3 years ago

Take the horse to overtake the

Mathematics

1 answer:

S_A_V [24]3 years ago

6 0

Answer:

120 km/h

Step-by-step explanation:

Speed in one direction = 40 km/h
Speed on return = x
Average speed = 60 km/h

Let the distance be d

Average speed

2d/(d/40 + d/x) = 60
d/40 + d/x = 2d/60
1/40 + 1/x = 1/30
1/x = 1/30 - 1/40
1/x = (4-3)/120
1/x = 1/120
x = 120 km/h

You might be interested in

The length of the sides of a triangle are three consecutive integers. If the perimeter is 87, find the dimensions of the triangl

nadezda [96]

You can divide 87 by 3 which is 29, so each angle will be 29 degrees.
Since they are consecutive, that means they will all measure the same.

Hope this helps! :)

8 0

3 years ago

Read 2 more answers

Which expression is equivalent to \left(3^{-6}\times 3^{3}\right)^{-1}\normalsize?(3 −6 ×3 3 ) −1 ? 3^{-19}3 −19 3^{18}3 18 3^{-

mars1129 [50]

Answer:

Step-by-step explanation:

Given the expression

$\left(3^{-6}\times 3^{3}\right)^{-1}\\$

According to law of indices, this can be written as;

$\left(3^{-6+3})^{-1}\\\\= (3^{-3})^{-1}\\\\= 3^{-3*-1}\\\\= 3^3\\\\= 27$

Hence the required answer is 27

5 0

2 years ago

The sum of a number times 10 and 17 is at most 27

guajiro [1.7K]

Answer:

The value of the number should be 1 (or less I think)

Step-by-step explanation:

At most means the highest value of the sum should be 27.

10x + 17 = 27

10x = 27 - 17

10x = 10

x = 10/10

x = 1

∴The value of the number should be 1

5 0

2 years ago

Problem Solving Method

Tanya [424]

Answer:

76 cards

Step-by-step explanation:

First you would take 96-12 to get 84. Then, take 84+ 2-9 to get 79. Then take 79 +4-6 to get 77.then take 77+1-2 to get 76 cards.

7 0

3 years ago

ASAP BRAINLIEST if correct. Am i correct?

Minchanka [31]

Answer:

C complex

Step-by-step explanation:

a+ bi

a is the real part and bi is the imaginary part

Together they make a complex number

3 0

3 years ago