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3 years ago

What does the following expression mean? 7! A. 7+6+5+4+3+2+1 B. 7·6·5·4·3·2·1

Mathematics

1 answer:

frez [133]3 years ago

3 0

Answer: B

Step-by-step explanation:

A factorial is multiplying the integer and all of the integers below it together.

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Solve for x: -5(x+5)>-2(x+4)

koban [17]

$- 5(x + 5) > - 2(x + 4) \\ - 5x - 25 > - 2x - 8 \\ 3x < - 17 \\ x < - \frac{17}{3}$

4 0

3 years ago

Tickets for a school carnival cost 10$ for adult and 5 for children. last Saturday carnival sold 170 tickets worth a total of $1

riadik2000 [5.3K]

70 adults and 100 children attended the carnival.

Step-by-step explanation:

Given,

Cost of each adult ticket = $10

Cost of each child ticket = $5

Total tickets sold = 170

Total revenue generated = $1200

Let,

Number of adults = x

Number of children = y

According to given statement;

x+y=170 Eqn 1

10x+5y=1200 Eqn 2

Multiplying Eqn 1 by 10

$10(x+y=170)\\10x+10y=1700\ \ \ Eqn\ 3$

Subtracting Eqn 2 from Eqn 3

$(10x+10y)-(10x+5y)=1700-1200\\10x+10y-10x-5y=500\\5y=500$

Dividing both sides by 5

$\frac{5y}{5}=\frac{500}{5}\\y=100$

Putting y=100 in Eqn 1

$x+100=170\\x=170-100\\x=70$

70 adults and 100 children attended the carnival.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

7 0

3 years ago

The height, h, in feet of a ball suspended from a spring as a function of time, t, in seconds can be modeled by the equation (eq

uysha [10]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Which of the following options is a Pythagorean Identity

alexdok [17]

None of them really, but C is equivalent to the Triognometric Pythagorean Theorem:

$(\sin x + \cos x)^2 = 1 + 2 \sin x \cos x$

$\sin^2 x + 2 \sin x \cos x + \cos ^2 x = 1 + 2 \sin x \cos x$

$\sin^2x + \cos ^2x = 1$

That's the Trigonometric Pythagorean Theorem

Answer: C

3 0

3 years ago

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C=4.62 a =2.2 what is c

DaniilM [7]

Answer: if your question was C-A then it would be 2.42

Step-by-step explanation:

4.62-2.2

7 0

3 years ago