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djverab [1.8K]
3 years ago
15

Substitute to solve Brainliest for correct answer

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
8 0

Answer:

4x-1y=3xy

Step-by-step explanation:

because 3-2=1 and add the y on and the do 4x-1y and that will = 3xy

Marina86 [1]3 years ago
3 0

Answer:

x=4, y=6

Step-by-step explanation:

hope that helps :)

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For f (x) = 4x +1 and g(x) = x2 - 5, find (1-3)(x).
tamaranim1 [39]
F(x)= 4(1-3)+1
4(-2)+1
-8+1
-7


G(x)=(1-3)^2-5
-2^2-5
4-5
-1
3 0
3 years ago
a homework assignment included 40 multiple choice questions Sabrina completed 65% of her assignment in David completed 4/5 of hi
bazaltina [42]

Answer:

6 or -6

Step-by-step explanation:

  1. 65% of 40=26
  2. 4/5 of 40=32
  3. 32-26=6
  4. (or if you start with 26)
  5. 26-32=-6
7 0
3 years ago
Read 2 more answers
A rectangular athletic field is twice long as it is wide the perimeter is 90 yard dismention?
Shkiper50 [21]
Ah well this would look like 2(30) + 30 = 90 aka 2L + W = 90
5 0
3 years ago
Proportional relationships, please answer all of the parts! Thank you!
Natalka [10]

Answer:

a. No (see below)

b. (see below)

c. Johnny

d. Johnny = $12.50 / hour      Doug = $9.16... / hour

e. Doug: extend the table to show how much he gets paid for 1 hour of work (the unit rate)

Johnny: already on the graph

Step-by-step explanation:

a. No. This is because a proportional relationship would have a certain ratio between payment and the amount of time spent working, which would not change. However, if Doug's neighbour pays him $55 for 6 hours, it's likely that this is not a proportional relationship, or we would be able to divide $55 by the 6 hours Doug spent working.

b. Even though above I said that it's probably not a proportional relationship, if it were, we would have to divide everything equally. I'm guessing the table should look like this:

                            Doug

       Time (hr)                      Earnings ($)

          4                                  $36.66...

          5                                  $45.8333...

          6                                  $55

          7                                  $64.4666....

          8                                  $73.333...

To work out how much Doug would get for working 4 hours:

4/6 x $55 = 2/3 x $55 = $36.66... (so definitely not a proportional relationship)

To work out how much Doug would get for working 5 hours:

5/6 x $55 = $45.8333.... (more evidence that this is not a proportional relationship)

To work out how much Doug would get for working 7 hours (we already got 6 hours):

7/6 x $55 = $64.4666...

To work out how much Doug would get for working 8 hours:

8/6 x $55 = $73.33... (we could double the 4 hour payment, but this is probably more accurate)

c. Johnny is getting paid more. If we look at how much Doug gets for 6 hours, it's $55. If we look out at how much Johnny gets for 6 hours, it's $75. (If we do the same with the other amounts of time, it's the same.

4 hours: D = $36.67 vs J = $50

5 hours: D = $45.83 VS J = $60

etc...

d. Johnny gets $75 per 6 hours --> 75/6 = $12.50 per hour

Doug gets $55 per 6 hours --> 55/6 = $9.1666... per hour

e. Carry on the table for Doug all the way to 1, so you can see the how much Doug gets paid for 1 hour of work (i.e. the minimum).

The unit rate is already on the graph for Johnny.

HOPE THIS HELPED :)

P.S. Mate cld you please give me Brainliest? That table took so much dam work

7 0
4 years ago
Read 2 more answers
500ml bottle unit cost is $2.10
borishaifa [10]
If you would like to know what is the unit price for the hair shampoo, you can calculate this using the following steps:

500 ml ... $2.10
100 ml ...$x = ?

500 * x = 2.10 * 100    /500
x = 2.10 * 100 / 500
x = $0.42

The unit price for the hair shampoo is $0.42.
3 0
3 years ago
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