MATHEMATICS HIGH SCHOOL

What is the surface area of the rectangular prism below

Answers

Answer 1

Answer:

Answer: A=490

Step-by-step explanation:

Formula - A = 2 ( wl + hl + hw)

2(7•14+7•14+7•7) = 490

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Use the information to answer the question.A store is having a sale on hats. The sale is buy one hat get one 50% off. The original price of one hat is $24.98. Alex bought several hats, and the
total cost was $187.35.

Answers

Answer:

10 hats

Step-by-step explanation:

Original price

$24.98

Sale price

$24.98*1.5 = $37.47 for two hats

Total cost

$187.35

Hats sold:

187.35/37.47 *2 = 10 hats

Please answer them correctly i need these points please.

Answers

Answer:

The first one is B The second one is D and the last one is A

In the formula a2 + b2 = c2, what is the value of a2?

Answers

a^2 + b^2 = c^2 Moving b^2 to RHS a^2 = c^2 - b^2

$a^2+b^2=c^2\ \ \ \ |subtract\ b^2\ from\ both\ sides\n\na^2=c^2-b^2\n\n\boxed{a=√(c^2-b^2)}$

K=A+32 solve for Variable A

Answers

$K=A+32\n\nA+32=K\ \ \ \ |subtract\ 32\ from\ both\ sides\n\n\boxed{A=K-32}$

K=A+32
A=K-32
.........

2b^2-9b-5
How do you answer this by factoring

Answers

Maybe ask google i sometimes do that

Simple...

you have: $2b^(2)-9b-5$

Using the box method-->>>

What multiplies to -10 and adds to -9?

-10*1=-10

-10+1=-9

(b-5)(2b+1)

Thus, your answer.

Water coming out from a fountain is modeled by the function: f(x)=−x2+6x+6
Where f(x) represents the height, in feet, of the water from the fountain at different times x, in seconds.

What does the average rate of change of f(x) from x = 2 to x = 5 represent?

a.The water travels an average distance of 4 feet from 2 seconds to 5 seconds.

b.The water travels an average distance of 1 foot from 2 seconds to 5 seconds.

c.The water falls down with an average speed of 2 feet per second from 2 seconds to 5 seconds.

d. The water falls down with an average speed of 1 foot per second from 2 seconds to 5 seconds.

Answers

Average rate of change from x = 2 to x = 5 is (f(5) - f(2))/(5 - 2) = ((-(5)^2+6(5)+6) - (-(2)^2+6(2)+6))/3 = ((-25+30+6) - (-4+12+6))/3 = (11 - 14)/3 = -3/3 = -1

Therefore, the water falls down with an average speed of 1 foot per second from 2 seconds to 5 seconds.

Average speed = change in position / change in time.
m = (f( b ) - f ( a )) / ( b - a )
a = 2, b = 5
f ( a ) = f ( 2 ) = - 4 + 12 + 6 = 14
f ( b ) = f ( 5 ) = - 25 + 30 + 6 = 11
m = (11-14) / (5-2) = -3/3 = -1
Answer: D ) The water falls down with an average speed of 1 foot per second from 2 seconds to 5 seconds.

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