2 years ago

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Mathematics

1 answer:

gulaghasi [49]2 years ago

3 0

Answer:

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If 68 is 40% of a value, what is the value?

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60 divided by 0.4(40%)=150

=150

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3 years ago

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One bag contains three white marbles and five black marbles, and a second bag contains four white marbles and six black marbles.

Troyanec [42]

It will be 21/40

probability getting both white marbles

3/8×4/10=12/80

probability getting both black marbles

5/8×6/10=30/80

12/80+30/80=42/80= 21/80

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Mr. Cannon has a piece of land that is 3/7 of an acre. He wants to build 10 houses on his land. How much land does each house ge

sashaice [31]

Answer:

Step-by-step explanation:

3/7 divided by 10 houses= 0.042 acres per house

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What is 2(2x+1) equivalent to

Nostrana [21]

2(2x+1)= (2 x 2x) + (2 x 1) = 4x + 2

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Julia used 1 foot square stone tiles to make a patio. She laid the tiles in a square, 7 tiles wide by 7 tiles long. What is the

marshall27 [118]

Answer: $49\ ft^2$

Step-by-step explanation:

The formula that is used to calculate the area of a square is this one:

$A=s^2$

Where "s" is the side lenght of the square

You know that Julia used 1 foot square stone tiles, then each side lenght of the this tiles is:

$s_{tile}=\sqrt{1\ ft^2}\\\\s_{tile}=1\ ft$

Since Julia laid 7 tiles wide by 7 tiles long, the side lenght of the new patio is:

$s_{patio}=7(1\ ft)\\\\s_{patio}=7\ ft$

Therefore its area is:

$A_{patio}=(7\ ft)^2\\\\A_{patio}=49\ ft^2$

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