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Over [174]
3 years ago
7

Please help will Mark brainiest and please show your working out thanks

Mathematics
1 answer:
AlekseyPX3 years ago
6 0

Step-by-step explanation:

800ml \times  \frac{1}{4}  = 200ml \\ 200ml -  -  > 1800ml \\ 360ml -  -  -  > x \\  \frac{200}{360}  = \frac{1800}{x}  \\ x =  \frac{18}{2}  \times 360  \\  \:  \:  = 9 \times 360 \\  = 3240ml \\  = 3.24l

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Solve x2 − 24x = −80 by completing the square.
Bess [88]

Answer:

{4, 20}

Step-by-step explanation:

x2 − 24x = −80

divide -24 by 2  and square result   get 144

x^2 - 24x  + 144 =  -80 + 144

(x - 12)^2  =  64

x - 12 = root (64)

x = 12 + 8  or  x = 12 - 8

x = 20 or 4

7 0
4 years ago
Read 2 more answers
Can you explain why the bottom angle always has to be 90 degrees?
loris [4]
Because it has two equal sides
5 0
3 years ago
4 - 7/x = 5 + 6/x <br>help me guys <br><br>​
Brilliant_brown [7]

Answer:

x = -13

Step-by-step explanation:

or, (4x-7)/x = (5x+6)/x

or, (4x-7) = (5x +6)

[the x gets cancelled when it comes to opposite side]

or, 4x-5x = 6+7

or, -x = 13

or, x = -13

8 0
3 years ago
A marble is randomly selected from a bag containing 3 Red marbles, 3 Blue marbles, and 3 Green marbles. What is the probability
dybincka [34]

Answer:B 1/3

Step-by-step explanation:

3/9=1/3

5 0
4 years ago
Read 2 more answers
A restaurant manager wants to purchase 200 sets of dishes. one design costs ​$15 per​ set, while another costs ​$55 per set. if
vivado [14]
Hello,

Let's solve this problem mathematically.

For first design...

f = 200 \times 15 = 3000

For second design...

s = 200 \times 55 = 11000

To use an entire budget for design she must order.

For first design

5800÷3000 = 1.93f

or
For second design

5800÷11000=0.52s

Hope this helps answer your question!
r3t40
5 0
3 years ago
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