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Galina-37 [17]
3 years ago
8

a chessboard has 64 squares at a chess tournament 84 chessboards were used how many squares are there on 85 chessboards

Mathematics
2 answers:
jasenka [17]3 years ago
5 0
There are 5376 squares on all of the chessboards because 84 x 64= 5376
lidiya [134]3 years ago
5 0

Answer:

5,440 squares.

Step-by-step explanation:

We have been given that a chessboard has 64 squares. At a chess tournament 84 chessboards were used.

To find the number of squares on 85 chessboards, we will multiply number of squares on each chess board by number of total chess boards.

\text{The number of squares on 85 chessboards}=\frac{\text{64 squares}}{\text{Chess board}}\times \text{85 chess boards}

\text{The number of squares on 85 chessboards}=\text{64 squares}\times 85

\text{The number of squares on 85 chessboards}=5440\text{ squares}

Therefore, there are 5440 squares on 85 chess boards.

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A glass is 4/7 full. Then 70 cm³ orange juice is poured in. The glass is now 3/4 full.
Nataly_w [17]

Answer:

The volume of the glass is 217.8 cm³

Step-by-step explanation:

If the glass were initially 4/7 full, that means 3/7 of the volume is still available to hold more juice.

Let v represent the volume of the glass.  

Then (3/7)v + 70 cm³ = (3/4)v.

We need to solve this for v.

Here the LCD is 28.  Thus,

(3/7)v + 70 cm³ = (3/4)v →  (12/28)v + 70 cm³ = (21/28)v.

Subtracting  (12/28)v from both sides, we get:

70 cm³ = (9/28)v.

We can isolate v by mult. both sides by the inverse of 9/28, which is 28/9:

(28/9)(70 cm³) = v

The volume of the glass is 217.8 cm³

3 0
3 years ago
Read 2 more answers
Name -
Thepotemich [5.8K]
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8 0
3 years ago
Awire 4 1/2 feet long is been cut into small pieces of wire each one and 1/4 feet long what is the maximum number of smaller pie
77julia77 [94]

Answer:

3

Step-by-step explanation:

Wire is 4 1/2 feet, or 4.5 feet.

Each smaller wire needs to be 1 1/4 feet, or 1.25 feet.

<em>How many whole 1.25 feet wire can we have from total of 4.5 feet wire?</em>

<em />

Let's divide:

\\frac{4.5}{1.25}=3.6

<em>thus we can have 3 whole "1.25 feet long" wire and fractional amount.</em>

<em />

<em>Hence, maximum number of smaller pieces is 3</em>

5 0
3 years ago
Given thatx-3+ y and that -2y+3&lt;-1, provide
kenny6666 [7]

Answer:

h Tu to be a great day of school and

Step-by-step explanation:

great day of school and I have a great day of school and I have a great day of➡ school and I I have a great day of school and I have a great day of school and I have a great yy

3 0
2 years ago
What is twice 2^30? write using exponents
OlgaM077 [116]
2^31

use the rule that states the product of the same base with different powers you add them

(a^n) times (a^m) = a^(n+m)
5 0
3 years ago
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