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3 years ago

Add the following lengths: 2' 8" + 1' 6"

Mathematics

2 answers:

Elanso [62]3 years ago

6 0

Answer:

4 ft, 2 in

Step-by-step explanation:

2 ft, 8 in plus 1 ft, 6 in = 3 ft, 14 in

there are 12 inches in a foot

3 ft, 14 in equals 4 ft, 2 in

JulijaS [17]3 years ago

4 0

Answer:

4' 2" inches (rounded)

Step-by-step explanation:

2' 8" + 1' 6" = 4.16666667 feet (exact number)

4.16666667 ≅ 4' 2"

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Step-by-step explanation:

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3 years ago

Please solve the following question

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Question 1:

A = w * l

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What is the x-coordinate of the solution to the following system of equations?

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Step-by-step explanation:

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3 years ago

Please someone what is the total surface area of this pryamid

Dimas [21]

Answer:

$\large\boxed{C.\ (25+25\sqrt3)\ in^2}$

Step-by-step explanation:

We have the square and four equilateral triangles.

The formula of an area of a squre:

$A_S=a^2$

a - length of side

The formula of an area of an equilateral triangle:

$A_T=\dfrac{a^2\sqrt3}{4}$

a - length of side

Clculate the areas:

SQURE:

$A_S=x^2\ in^2$

TRIANGLE:

$A_T=\dfrac{x^2\sqrt3}{4}\ in^2$

The SURFACE AREA of a square pyramid:

$S.A.=A_S+4A_T\\\\S.A.=x^2+4\cdot\dfrac{x^2\sqrt3}{4}=x^2+x^2\sqrt3$

Put x = 5:

$S.A.=5^2+5^2\sqrt3=(25+25\sqrt3)\ in^2$

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3 years ago