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Blizzard [7]
3 years ago
10

How many feet in a mile?

Mathematics
1 answer:
Sav [38]3 years ago
7 0
There are 5280 feet in a mile.
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The sum of two numbers is 33. Their difference is 23. Find the numbers.
Ipatiy [6.2K]

Answer: The numbers are 28 and 5

Step-by-step explanation: The question gives a set of clues. In the first instance, the addition of two numbers equals 33. Let us assume the two numbers are A and B. What that means is that

A + B = 33.

We shall call this equation 1.

The other clue is given as “their difference is 23.” This can be expressed as

A - B = 23.

We shall call this equation 2.

Now we have a pair of simultaneous equations as follows

A + B = 33 —————-(1)

A - B = 23 —————-(2)

We shall use the substitution method

From equation (1), if we make A the subject of the equation we shall move B to the other side and we’ll have

A = 33 - B

Substitute for the value of A in equation (2)

A - B = 23 now becomes

(33 - B) - B = 23

33 - B - B = 23

33 - 2B = 23

By collecting like terms we now have 33 - 23 = 2B

(Remember that when a positive value crosses to the other side of an equation, it becomes negative, and vice versa)

33 - 23 = 2B

10 = 2B

Divide both sides of the equation by 2

5 = B

If we calculate B as 5

We can substitute for this value into equation 1, which is

A + B = 33

A + 5 = 33

Subtract 5 from both sides of the equation

A + 5 - 5 = 33 - 5

A = 28.

Therefore the numbers are 28 and 5.

8 0
3 years ago
Subject:Mathematics ​
djverab [1.8K]

Answer:

I'm also struggling with that too

7 0
3 years ago
Read 2 more answers
NEED HELP please!! 30 points!!!
nikitadnepr [17]

Answer: What are you asking ?

Step-by-step explanation:

8 0
3 years ago
M is the midpoint of AB. If A is at (5,7) and M is at (-3,-4), find the coordinates of B.
Paladinen [302]

Got a picture for this question?


6 0
3 years ago
Solve for x: 5x + 4z = 10z - 2x
Digiron [165]

Answer:

x= 6/7z

Step-by-step explanation:

5x + 4z = 10z - 2x

5x + 2x = 10z - 4z

7x = 6z

x = 6/7z

5 0
3 years ago
Read 2 more answers
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