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Alex
3 years ago
8

You select a letter randomly from a bag containing the letters s, p, i, n, n, e, and r. find the probability of selecting an s.

description
Mathematics
2 answers:
Ede4ka [16]3 years ago
8 0

Answer:

i think it would be 1/7 also

Step-by-step explanation:

Tems11 [23]3 years ago
3 0

Answer:

1/7

Step-by-step explanation:

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60cm²

Step-by-step explanation:

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A=10×12/2=60cm²

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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
Solve the inequality and identify solution. Please help. <br><br> 5x-4&gt;-4
Rudik [331]

Answer:

x > 0

Step-by-step explanation:

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