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Ainat [17]
3 years ago
13

PLEASEEE HELPPP I don’t know this

Mathematics
1 answer:
Roman55 [17]3 years ago
3 0
It should be D. there isn’t the answer choice of i beside the 4. so i would go with D. hope this helped tho!
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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
7. After boiling, the 18 liters of water was reduced to 7 liters. How many water was
e-lub [12.9K]

Answer:

C

Step-by-step explanation:

Sorry if its wrong bro

4 0
2 years ago
2.4n + 1.2n - 0.12 = 7.08
Basile [38]

Answer:

n=2

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If f(x)=x+8 and g(x)=-4-3 find (f+g)(x)
Lilit [14]

Answer:

(f+g)(x) = -3x+5

Step-by-step explanation:

f(x)=x+8 and g(x)=-4x-3

(f+g)(x) = f(x) + g(x)

             = x+8+-4x-3

             = -3x+5

3 0
3 years ago
Solve The Following Question:<br><br> 5/13t = -9
BabaBlast [244]
5/13t= -9
Then t =( -9*13) / 5
T=-23.4
3 0
3 years ago
Read 2 more answers
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