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WARRIOR [948]
2 years ago
9

(3x – 70) (3y+40) 120 x

Mathematics
2 answers:
enyata [817]2 years ago
4 0

Answer:

3x-70

Step-by-step explanation:

(3y+40 ) 120x is the answer of that question answer

Lelu [443]2 years ago
4 0

120x(3x-70)(3y+40)=
360x 2nd power -8400x)(3y+40)=
1080x 2nd power y+14400x 2nd power-25200xy-336000x
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A cognitive psychologist would like to evaluate the claim that the omega-3 fatty acids can help improve memory in normal adult h
bogdanovich [222]

Answer:

(a)

  • Independent Variable- Dosage of Omega-3 Fatty Acids
  • Dependent Variable - Number of news item remembered

(b)Discrete

(c)Ratio Scale and Discrete Variable

(d) Experimental Method

Step-by-step explanation:

The psychologist wants to evaluate the claim that omega-3 fatty acids can help improve memory in normal adult humans.

(a)In the study, the participants in the two groups were given fish extracts containing Omega-3 (500 mg) and no Omega-3 (0 mg).

The memory test involves measuring the number of items each participant remembers from the past three weeks of news.

Therefore:

  • Independent Variable- Dosage of Omega-3
  • Dependent Variable - Number of news item remembered

(b) The dependent variable is discrete since the number of news items remembered can only be whole numbers.

(c)The independent variable is in milligrams of Omega-3 where the placebo is 0 mg. This is a ratio scale since it has an absolute zero.

Since the dosage is given in multiples of 50mg, it is a discrete variable.

(d)Since the psychologist seeks to manipulate the conditions of the study by introducing Omega-3 to some of the participants and placebo to other participants, it is an experimental distribution.

5 0
3 years ago
I need help with finding x.
Pepsi [2]
Get a hint and tell me when you get a hint of where the x and I’ll tell you
4 0
2 years ago
Read 2 more answers
2x + 3y = 7 3x + 2y = 8
Kipish [7]

Answer:

\boxed{\sf \ \ \ x=2, \ \ y =1 \ \ \ }

Step-by-step explanation:

Hello,

Pls post the full question next time so that we can make sure what is expected.

I assume that you want to solve for (x,y)

   (1) 2x + 3y = 7

   (2) 3x + 2y = 8

2*(2)-3*(1) gives

2*3x + 2*2y - 3*2x - 3*3y = 2*8 - 3*7 = 16 - 21 = -5

6x - 6x + 4y -9y = -5

-5y=-5

y = 1

and we can replace in (1)

2x + 3*1 = 7

2x = 7 - 3 = 4

x = 2

hope this helps

7 0
3 years ago
What is the area of this figure?
Luden [163]

Answer:

The area of this figure is 24mm.

Step-by-step explanation:

4mm*3mm=12mm

1mm*6mm=6mm

3mm*4mm=12mm/2mm=6mm

6mm+6mm+12mm=24mm

3 0
2 years ago
Suppose that C and D are points on the number line. If CD=9 and D lies at 4, where could C be located? If there is more than one
Svetllana [295]

Step-by-step explanation:

There can only be 2 location which is to the right and to the left, this is because it means the difference between is 9. So the two answers are…

13

And

-13

6 0
3 years ago
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