3 years ago

If you’re good with permutations in math 30 please help and answer this easy question below real answers only

Mathematics

1 answer:

yanalaym [24]3 years ago

7 0

Answer: a) 10!/7!

Step-by-step explanation:

The "quick" way of answering this is: 10 × 9 × 8 = 720

If you are using the formula then you get:

$\dfrac{10!}{(10-3)!}\quad =\large\boxed{\dfrac{10!}{7!}}\quad = 720$

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Mr. Smith started the school year with 26 students in his class. If x students moved out of his class, which expression represen

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Answer:

26-x

Step-by-step explanation:

If he started with 26 learners he lost x. Imagine x was a value of 5. To get the learners left you will have to subtract the numbers he lost from 26

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3 years ago

3x + 9 = x + 5 Two sided equations

Fiesta28 [93]

Answer:

x=-2

Step-by-step explanation:

Let's solve your equation step-by-step. 

3x+9=x+5

Step 1: Subtract x from both sides. 

3x+9−x=x+5−x

2x+9=5

Step 2: Subtract 9 from both sides. 

2x+9−9=5−9

2x=−4

Step 3: Divide both sides by 2. 

2x /2=-4/2

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3 years ago

Aliyah bought a car for $32,000. It is now worth $5000 less than half of what she purchased it for. To the nearest tenth of a pe

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32,000 x 0.5 = 16000

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11000 / 32000= 0.34375

1- 0.344= 0.656

Answer : D

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3 years ago

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exis [7]

Answer:

$b = log_{10}(a) \\ \\ \therefore \: {10}^{b} = a$

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4 years ago

Which shows the number 49,000,000,000 in scientific notation?

Lunna [17]

Answer:

4.9 (10^10)

Hope this helps!

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3 years ago

Read 2 more answers