3 years ago

5. PLEASE HELP ME

Mathematics

1 answer:

Serga [27]3 years ago

4 0

Answer:

7x=11

Step-by-step explanation:

do it

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Which points are distance of 5 units from the x-axis

Ira Lisetskai [31]

I think x and c because their y coordinate is 5

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3 years ago

A square room has a floor area of 81 square feet. the height of the room is 5 what is the area of one wall

Ilia_Sergeevich [38]

Answer:

45 square feet

Step-by-step explanation:

Area of square and area of rectangle:

Area of square = 81 square feet

$\sf \boxed{Side \ of \ square = \sqrt{area}}$

$\sf = \sqrt{81}\\\\ = \sqrt{9*9}\\\\ = 9 \ feet$

height = 5 ft

length of wall = 9 ft

Area of one wall = length * height

= 9 * 5

= 45 square feet

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2 years ago

Solve the inequality.<br> 3+ 4x > 27

gogolik [260]

X = 7. 7 x 4 = 28 and 28 + 3 = 31.

31>27

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3 years ago

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Help me please will give brainly

marta [7]

This is the answer, hope you understand

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3 years ago

A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the numb

sergij07 [2.7K]

Answer: $\$18,629$

Step-by-step explanation:

Given

The unit cost is given by

$C(x)=0.6x^2-168x+30,389$

find the derivative of the unit cost and equate it to zero to obtain the minimum value

$C'(x)=0.6\times 2x-168\\\Rightarrow 0.6\times 2x-168=0\\\Rightarrow 1.2x=168\\\\\Rightarrow x=\dfrac{168}{1.2}\\\\\Rightarrow x=140$

Substitute 140 for $x$ in the cost function, we get

$C(140)=0.6[140]^2-168(140)+30,389\\C(140)=11,760-23,520+30,389\\C(140)=\$18,629$

7 0

3 years ago