2 years ago

What’s the answer 4±√10

Mathematics

1 answer:

valina [46]2 years ago

3 0

Answer:

Step-by-step explanation:

1 because it 1 and I know it one I need help 1

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The function f(x)=-(x-3)^2 +9 can be used to represent the area of a rectangle with the perimeter of 12 units, as a function of

Ivenika [448]

Maximum area of the rectangle is $9cm^{2}$

Explanation:

Considering the dimensions to be in cm

$f(x) = -(x-3)^{2} +9\\f(x) = -(x^{2} +9 - 6x)+9\\f(x) = -x^{2} +6x\\f'(x) = -2x+6\\-2x+6 = 0\\2x=6\\x=3cm\\\\$

Putting the value of x = 3

$Perimeter = 2(x+b)\\12 = 2(3+b)\\6 = 3+b\\b= 3cm$

$Area of rectangle = x X b\\ = 3 X 3\\ = 9cm^{2}$

Therefore, maximum area of the rectangle is $9cm^{2}$

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2 years ago

Together Pam, Dan and Sam have 31.00. How many dollars does Sam have if Dan has 3.00 less than Pam, and Sam has 1.00 more than p

shepuryov [24]

Answer:

16.00 dollars

Step-by-step explanation:

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2 years ago

I need help bad! I need help with the last question!

MAVERICK [17]

Use the fact that 1 axe head = 3.20 trade value.
Let N denote number of axe heads needed to trade for a trade gun.
3.20×N=120.00
》 N=120/3.2 which will give number of axe heads needed. Round to the nearest ones place if you must.

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2 years ago

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If f(x) = 10 + 50x, solve for x when f(x) = 310.

weqwewe [10]

x = 6

given f(x) = 310, we obtain the equation

10 + 50x = 310 ( subtract 10 from both sides )

50x = 300 ( divide both sides by 50 )

x = $\frac{300}{50}$ = 6

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2 years ago

What does the expression n+3 represent?

Sati [7]

Do you know what n equals so i can solve it?

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3 years ago