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3 years ago

Claire drew a house for her art class. The drawing is shown below.

Mathematics

1 answer:

larisa [96]3 years ago

3 0

Answer:

perimeter=sum of all sides=a+b+c+d=10+8+5+3=26cm

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(Repost) School is starting, and the teacher is giving each student 2 new pencils. She has 8 rows with 4 desks in each row. Whic

liubo4ka [24]

2 x 8+16 = 32 16 x 4 = 64

2 x 4 +8 = 16 8 x 8 = 64

4 x 8 + 32 = 64 2 x 32 = 64

1 l l l l 8 5 l l l l 40

2 l l l l 16 6 l l l l 48

3 l l l l 24 7 l l l l 56

4 l l l l 32 8 l l l l 64

The teacher has 64 or more pencils to give out.

Hope this helps you choice your answer. :)

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2 years ago

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True or False? The ratios 4/5 and 52/60 are proportional

ZanzabumX [31]

Answer:

False

Step-by-step explanation:

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3 years ago

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If a watch cost $40 and you must pay 6.5% sales tax, how Mich will the tax be?

trasher [3.6K]

Hello

The tax would be 6.15 because 40/6.5 is 6.15

hope this helps

plz mark me as brainliest

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3 years ago

An open metal tank of square base has a volume of 123 m^3

snow_lady [41]

Answer:

a) h = 123/x^2

b) S = x^2 +492/x

c) x ≈ 6.27

d) S'' = 6; area is a minimum (Y)

e) Amin ≈ 117.78 m²

Step-by-step explanation:

a) The volume is given by ...

V = Bh

where B is the area of the base, x^2, and h is the height. Filling in the given volume, and solving for the height, we get:

123 = x^2·h

h = 123/x^2

b) The surface area is the sum of the area of the base (x^2) and the lateral area, which is the product of the height and the perimeter of the base.

$S=x^2+Ph=x^2+(4x)\dfrac{123}{x^2}\\\\S=x^2+\dfrac{492}{x}$

c) The derivative of the area with respect to x is ...

$S'=2x-\dfrac{492}{x^2}$

When this is zero, area is at an extreme.

$0=2x -\dfrac{492}{x^2}\\\\0=x^3-246\\\\x=\sqrt[3]{246}\approx 6.26583$

d) The second derivative is ...

$S''=2+\dfrac{2\cdot 492}{x^3}=2+\dfrac{2\cdot 492}{246}=6$

This is positive, so the value of x found represents a minimum of the area function.

e) The minimum area is ...

$S=x^2+\dfrac{2\cdot 246}{x}=(246^{\frac{1}{3}})^2+2\dfrac{246}{246^{\frac{1}{3}}}=3\cdot 246^{\frac{2}{3}}\approx 117.78$

The minimum area of metal used is about 117.78 m².

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2 years ago

What fraction is less than 1/2

Nezavi [6.7K]

Answer:

1/3,1/4,and so on like increasing in number

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2 years ago

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