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2 years ago

What is x? ...................

Mathematics

1 answer:

Liono4ka [1.6K]2 years ago

7 0

The letter x is often used in algebra to mean a value that is not yet known. hope this helps

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Solve the inequality 2x < 8 - 4(2 - x)

nevsk [136]

Remember you can' do anything to boht sides, but when times negative, flip sign
distributive property
a(b+c)=ab+ac

distribute the -4
-8+4x

now we have
2x<8-8+4x
2x<4x
minus 2x both sides
0<2x
therefor
0<x

answer is x>0

5 0

3 years ago

Tell which property is represented. 9 x (5 x 2) = (9 x 5) x 2

Tcecarenko [31]

Answer:

Step-by-step explanation:

associative property because the numbers are changing in postition throughout the equation.

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3 years ago

Read 2 more answers

In a set of 25 aluminum castings, four castings are defective (D), and the remaining twenty-one are good (G). A quality control

lianna [129]

Answer:

The sample space for selecting the group to test contains 2,300 elementary events.

Step-by-step explanation:

There are a total of N = 25 aluminum castings.

Of these 25 aluminum castings, n₁ = 4 castings are defective (D) and n₂ = 21 are good (G).

It is provided that a quality control inspector randomly selects three of the twenty-five castings without replacement to test.

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!(n-k)!}$

Compute the number of samples that are possible as follows:

${25\choose 3}=\frac{25!}{3!\times (25-3)!}$

$=\frac{25\times 24\times 23\times 22!}{3!\times 22!}\\\\=\frac{25\times 24\times 23}{3\times 2\times 1}\\\\=2300$

The sample space for selecting the group to test contains 2,300 elementary events.

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3 years ago

Identify each expression with a sum of x2 + 3x +1.

Yuki888 [10]

Answer:

There are no like terms.

Step-by-step explanation:

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2 years ago

What does the digit 2 represent in 701,280

dlinn [17]

Step-by-step explanation:

hundreds

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3 years ago