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3 years ago

Help!!! Find the surface area of the cube shown below

Mathematics

1 answer:

ivanzaharov [21]3 years ago

3 0

Answer:

The answer to your question is 8/3 u²

Step-by-step explanation:

Data

length of the side = 2/3

Surface area = ?

Process

1.- Calculate the area of one face

Area = side x side

-Substitution

Area = 2/3 x 2/3

-Result

Area = 4/9

2.- Calculate the area of the cube (a cube has 6 faces)

Surface area = 4/9 x 6

= 24/9

-Simplification

Surface area = 8/3 u²

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Y-3x=2<br> y=-2x-8<br> how do i solve this by substitution

11111nata11111 [884]

$\left \{ {{y-3x=2} \atop {y=-2x-8}} \right. \\\\Substitute\ second\ equation
 to\ first:\\\\-2x-8-3x=2\\-2x-3x=2+8\\-5x=10\ \ \ \ \ \ |:-5\\x=-2\\\\y=-2\cdot(-2)-8\\y=4-8\\y=-4\\\\ \left \{ {{y=-4} \atop {x=-2}} \right.$

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2 years ago

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Solve this equation: x+21=20

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Answer:

x=20-21

x= -1

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2 years ago

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In the diagram below, NO is parallel to K L. If KN = 7, NO = 10, and

Vesnalui [34]

<h3>Answer: 14</h3>

=====================================================

Work Shown:

$\frac{\text{KM}}{\text{NM}} = \frac{\text{KL}}{\text{NO}}\\\\\frac{\text{KN}+\text{NM}}{\text{NM}} = \frac{\text{KL}}{\text{NO}}\\\\\frac{7+x}{x} = \frac{15}{10}\\\\10(7+x) = 15x\\\\$

$70+10x = 15x\\\\70 = 15x-10x\\\\5x = 70\\\\x = \frac{70}{5}\\\\x = 14\\\\\text{NM} = 14$

Side note: The triangles are similar, which allows us to set up the proportion in step 1.

3 0

2 years ago

Mikaila collected 27 pounds of glass bottles to bring to the recycling center. she also collected 400 ounces of newspapers and 1

Paul [167]

The total weight of the items Mikaila brought to the recycling center is 992.

8 0

2 years ago

What is 215% of 44? 9460 946 94.6 9.46

nirvana33 [79]

Answer:

94.6

Step-by-step explanation:

100% of 44 = 44

⇒ 200% of 44 = 44 + 44 = 88

15% = 15/100 = 0.15

⇒ 15% of 44 = 0.15 x 44 = 6.6

Therefore, 215% of 44 = 88 + 6.6 = 94.6

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2 years ago