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kondaur [170]
3 years ago
8

Some instructions for the time it takes to roast a turkey are: allow 20 minutes for every 450g

Mathematics
1 answer:
artcher [175]3 years ago
3 0

Answer:

4 hours and 40 minutes

Step-by-step explanation:

450g = kg

450g = 0.45 kg

We will use ratios:

\frac{20}{0.45} =\frac{x}{6.3} \\\\0.45x=126\\x=280

280 mins =

4 hours and 40 minutes

4(60) + 40

240 + 40

280

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What are the coordinates (x, y) at which the graphs of 2x + 3y = 12 and 2x - y = 4 intersect?
Jobisdone [24]

  The coordinates (x,y) are (3,2), If the graphs of 2x+3y=12 and 2x-y=4 are intersect.

Step-by-step explanation:

The given is,

                                         2x+3y=12.................................(1)

                                           2x-y=4....................................(2)

Step:1

            The values of x and y are obtained by elimination method,

            Substrate the equation (1) and (2),

                                          2x+3y=12

                                             2x-y=4

             ( - )

             Equation becomes,

                      (2x-2x)+(3y+y)=(12-4)

                                       (0)+(4y)=(8)

                                                   4y=8

                                                     y=\frac{8}{4}

                                                     y=2

            From the equation (1),

                                           2x+3y=12

                                        2x+3(2)=12

                                            2x+6=12

                                                  2x=12-6

                                                   x=\frac{6}{2}

                                                   x=3

Step:2

            Check for solution,

                                          2x-y=4....................................(2)

            Substitute the values of x = 3 and y = 2 in above equation,

                                        2(3)-2=4

                                             6-2=4

                                             4=4

           Both sides are equal, so the x = 3 and y = 2 is correct answer

Result:

          The coordinates (x,y) are (3,2), If the graphs of 2x+3y=12 and 2x-y=4 are intersect.

8 0
4 years ago
Which of the following is the simplified form of the expression -x(x - y) + 4xy - x2?
Leokris [45]
-x+xy +4xy-x2
-2x2+5xy
C.-2x2+5xy
6 0
3 years ago
How much do you need to subtract from 67/10 to make 6
Artist 52 [7]

Answer:

7/10

Step-by-step explanation:

67/10-60/10=7/10

7 0
3 years ago
Read 2 more answers
Lucas put 30% of his paycheque in a saving account and used another $180 to buy groceries. He has left $590 left. How much money
Vikentia [17]
Answer:

He was paid $1,001

Explanation:

Add 590 and 180 which is 770
Then multiply 770 by 0.30 which is 231
Add 231 to 770 which is $1,001

Hope this helps!
3 0
3 years ago
Please help!!!!!! I’ll mark you brainliest!!!!
Alla [95]

Answer:

3.6000

Step-by-step explanation:

I did this three different ways I think this is right.

8 0
3 years ago
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