MATHEMATICS HIGH SCHOOL

If X =3 calculate the value of 2x2+X

Answers

Answer 1
Answer: it should be 7 wouldnt it be
Answer 2
Answer: If X=3 then 2x2=4 and 4+3=7 so 7 would be your answer

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What answer choices go to what figure? :D

Answers

Since the center is considered the corner that they both share, here are the answers figure a goes with the first, figure b goes with the last, figure c goes with the second, and figure d goes with the third. Hope this helps.

write an equation in point slope form for the line through the given point with the given slope (8,3) m =6

Answers

Hope it helped you.
Point slope form
y -y1=m(x-x1) where (x1,y1) is the point and m is the slope
y - 3 = 6(x -8)

If the base of a rectangle is 12cm and the area is 250.8cm2 what is the height of the rectangle

Answers

250.8cm^2/12cm= 20.9cm.
the height of the rectangle is 20.9 cm
250.8cm^2/12cm = 20.9cm
the height of the rectangle is 20.9cm

The perimeter of a rectangular piece of land is 280m. People divide the land into two small pieces: a square, a rectangle. The total perimeter of the two small plots is 390m. Calculate the area of ​​the original piece of land.

Answers

Step-by-step explanation:

Length of the Rectangular piece of the land = 12 + 1/2 m = 25/2 m

Breadth of the Rectangular piece of the land = 5 + 1/5 m = 26/5 m

If 4 small square flower bed of side length 1 m are made at center.

To find: Area of the rectangular land , Perimeter of the rectangle and Area of land left when flower bed are mad.

Perimeter of the rectangle = 2 × ( length + breadth )

= 2 × ( 25/2 + 26/5 )

= 2 × ( 177/10 )

= 177/5 m

= 35.4 m

Area of the rectangular land = Length × Breadth

= 25/2 × 26/5

= 5 × 13

= 65 m²

Area of a flower bed = side × side = 1 × 1 = 1 m²

Area of 4 flower bed= 4 × 1 = 4 m²

Area left in the land = 65 - 4 = 61 m²

Therefore, Perimeter of the land is 35.4 m

Area of land is 65 m²

Area of the land left after flower beds is 61 m²

Suppose that c (x )equals 7 x cubed minus 70 x squared plus 13 comma 000 x is the cost of manufacturing x items. Find a production level that will minimize the average cost of making x items.

Answers

Answer:

A production level that will minimize the average cost of making x items is x=5.

Step-by-step explanation:

Given that

c(x)=7x^3-70x^2+13,000x

is the cost of manufacturing x items

To find a production level that will minimize the average cost of making x items:

The average cost per item is f(x)=(c(x))/(x)

Now  we get f(x)= 7x^2-70x+13000

f(x) is continuously differentiable for all x

Here x≥0 since it represents the number of items.,

Put x=0 in 7x^2-70x+13000

For x=0 the average cost becomes 13000

f(0)=7(0)^2-70(0)+13000

=13000

∴ f(0)=13000

To find Local extrema :

Differentiating f(x) with respect to x

f^(\prime) (x)=14x-70=0

14x=70

x=(70)/(14)

∴  x=5 gives the minimum average cost .

At x=5 the average cost is

f(5)=7(5)^2-70(5)+13000

=12825

∴ f(5)=12825 which is smaller than for x=0 is 13000

∴ f(x) is decreasing between 0 and 5 and it is increasing after 5.

Answer:

ummmm

Step-by-step explanation:

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PLEASE ANSWER THE QUESTION CORRECTLY!!!!!!!!!!!!

Answers

Answer: -2,2

Step-by-step explanation:
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