3 years ago

Three cubes of each side 4cm are joining end to end. Find the surfacing area of resulting cuboid.

1 answer:

3 0

You would have to count the faces of cubes after you’ve joined them and then add all the surface areas up of each individual cube . I drew a pic to help you

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A walkway is being constructed using square cement tiles that each have an area of 19.0 ft2. 6 tiles will be lined up end to end

allochka39001 [22]

Answer:

26.3 feet

Step-by-step explanation:

We have to first find the length of the side of each tile.

The area of each tile is 19.2 $ft^2$ .

The area of a square is:

A = $L^2$

where L = length of side

Therefore:

$19.2 = L^2\\\\L = \sqrt{19.2} = 4.38 feet$

6 tiles will be lined end to end to construct the walkway, hence, the length of the walkway is:

6 * 4.38 ≅ 26.3 feet

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4 years ago

Simplify the following expression. (4x2 + 8x + 15) + (x2 − x − 27) − (x + 5)(x − 7)

mario62 [17]

Answer:

X^2+ 2x+35

Step-by-step explanation:

Use pemdas. Multiply the parentheses. Multiply. Collect like terms. Remove the parentheses.

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3 years ago

Two lines are parallel if and only if their slopes are equal. Write two if-then statement that are implied by this thesis statem

Veronika [31]

If and only if (iff) statements are true if only both statements are true of both are false, its double implied.
Here are the implications:
If two lines are parallel then their slopes are equal.
If the slopes of two lines are equal then they are parallel.

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3 years ago

. In the 1980's it was generally believed that congenital abnormalities affected about 5% of the nation's children. Some people

mash [69]

Answer:

the answer is solved in the image below.

Step-by-step explanation:

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3 years ago

Express these numbers in standard form (a)5730(b)0.23(c)0.000231(d)7150000(e)500.8

alisha [4.7K]

Answer:

5730 = 5.73×10³

0.23 = 2.3×10‐¹

0.000231 = 2.31×10-⁴

7150000 = 7.15×10⁶

500.8 = 5.008×10²

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3 years ago