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2 years ago

Evaluate the expression. 8! − 5!

Mathematics

2 answers:

storchak [24]2 years ago

5 0

Answer:

Step-by-step explanation:

40200

svp [43]2 years ago

4 0

Answer:

40200

Step-by-step explanation:

(8x7x6x5x4x3x2x1) - (5x4x3x2x1)

Or simply plug 8! - 5! into the calc.

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Which statement is false about the line whose equation is y=-2x-5?

Evgen [1.6K]

What are the choices

5 0

3 years ago

There are three executives in an office, ages 56, 57, and 58. If a 57-year-old executive enters the room, the

vova2212 [387]

Answer:

option (c) The mean age will stay the same but the variance will decrease

Step-by-step explanation:

Case I: For 3 executives of ages 56, 57 and 58

Number of executives, n = 3

Mean = $\frac{\textup{56 + 57 + 58 }}{\textup{3}}$

Mean = 57

Variance = $\frac{\sum{(Data - Mean)^2}}{\textup{n-1}}$

Variance = $\frac{(56 - 57)^2+(57-57)^2+(58-57)^2}{\textup{3-1}}$

Variance = $\frac{1+0+1}{\textup{2}}$

Variance = 1

For Case II: For 4 executives of ages 56, 57, 58 and 57

Number of executives, n = 4

Mean = $\frac{\textup{56 + 57 + 58 + 57 }}{\textup{4}}$

Mean = 57

Variance = $\frac{\sum{(Data - Mean)^2}}{\textup{n-1}}$

Variance = $\frac{(56 - 57)^2+(57-57)^2+(58-57)^2+(57-57)^2}{\textup{4-1}}$

Variance = $\frac{1+0+1+0}{\textup{3}}$

Variance = 0.67

Hence,

Mean will remain the same and the variance will decrease

Hence,

The correct answer is option (c) The mean age will stay the same but the variance will decrease

3 0

2 years ago

The midpoint M of QR has coordinates (7, 8). Point R has coordinates (4, 6). Find the

djyliett [7]

Answer:

q= (5.5, 7)

Step-by-step explanation:

add the x-axis together then divide by two and do the same with the y-axis

3 0

3 years ago

X-treme Sports has skateboards at a 24% discount. Find the sale price of a $384 skateboard using percent paid.

Alona [7]

Answer:

the price of a discounted skateboard would be 291.84 or if the board was already discounted, the original price was 476.16

Step-by-step explanation:

5 0

3 years ago

Please help me I need to get a good grade on this

Julli [10]

1 4/5 - 2/5 = r you minus the total she has already walked or ran from the total she plans on running to get “r”

8 0

2 years ago