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AVprozaik [17]
3 years ago
9

Which figure has 90 rotational symmetry?

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
7 0

The correct answer is A)

aliya0001 [1]3 years ago
6 0
It should be D) i think
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Which statement best describes a method that can be used to sketch the graph.
Yakvenalex [24]

Answer:

Step-by-step explanation:

b. Translate the graph of y = |x| two units up.

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2 years ago
A fence is to be built to enclose a rectangular area of 1800 square feet. The fence along three sides is to be made of material
drek231 [11]

Answer:

length = 60 foot, width = 30 foot

Step-by-step explanation:

Area of rectangular part, A = 1800 ft²

Cost of fencing three sides is $ 6 per foot and cost of one side fencing is $18 per foot.

Let the length of the rectangle is l and the width of the rectangle is W.

Area = Length x width

A = L x W

1800 = L x W ...... (1)

Total cost of fencing, C = 6 x ( L + W + L) + 18 x W

C = 6 (2L + W) + 18 W

C = 12 L + 24 W

Substitute the value of W from equation (1), W=\frac{1800}{L} in equation (2)

C=12L+24\times \frac{1800}{L}

C=12L+\frac{43200}{L}

Differentiate both sides with respect to L:

\frac{dC}{dL}=12-\frac{43200}{L^{2}}

Put it equal to zero for maxima and minima

12-\frac{43200}{L^{2}}=0

L = 60 foot

and W = 30 foot

So, the costing is minimum for length = 60 foot and the width = 30 foot.

4 0
3 years ago
What is the NEXT step in solving this system of equations, and what is the solution for the value of "y"?
Mazyrski [523]

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There is no next step, the problem is answered!

Step-by-step explanation:

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2 years ago
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Iteru [2.4K]

please check the attachment

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3 years ago
Need help points and brainlest !
diamong [38]

Answer:

A

Step-by-step explanation:

Greater than 300 so >300

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3 years ago
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