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Svetllana [295]
3 years ago
8

Given that y=18 + 3x² (i) find the value of y when x= -2

Mathematics
2 answers:
vaieri [72.5K]3 years ago
8 0

Answer:

y= 6

Step-by-step explanation:

substitute x= -2 in the equation y=18+3x^2

from there you'll get your final answer

8_murik_8 [283]3 years ago
4 0

Answer:

y=30

Step-by-step explanation:

f(-2)=18+3(-2)^2

f(-2)=18+3*4

f(-2)=18+12

f(-2)=30

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Find the sum <br> 1/2 (w-6)+ 1/4(w+12)
PolarNik [594]
Answer: 3/4w
Explanation:
1/2(w-6)+1/4(w+12)
= 1/2w-6/3 + 1/4w+12/4
= 1/2w-3 + 1/4w+12/4
= 1/2w +1/4w
= 2/2(1/2)w + 1/4w
= 2/4w+1/4w
=3/4w
5 0
3 years ago
4:00 am to 8:00 is how many hours
Marina86 [1]

Answer:

10 hours

Step-by-step explanation:

assuming its 8pm if its 8 am 4 hours

7 0
2 years ago
Read 2 more answers
On the library shelf are: -6 mystery books -5 science books -4 history books -3 adventure books Which event gives you a probabil
Mumz [18]

Six mystery books, five science books, four history books, and three adventure books add up to 18 books on the shelf.

18 divided by 9 = 2 books >> which equals 1/9 of the shelf

2/9 equals 4 books ...etc

The four history books would equal 2/9 and would be your answer!

4 0
3 years ago
Select the correct answer from each drop-down menu.
ruslelena [56]

The independent variable in the relationship is the <u><em>Number of Months</em></u> and should be placed on the<em> </em><u><em>x-axis</em></u>

The dependent variable in the relationship is the <em><u>Number of Fish</u></em> and should be placed on the <u><em>y-axis</em></u>

Step-by-step explanation:

Let us explain the independent and dependent variables of a relation

  • The independent variable is the input of the relation
  • The dependent variable is the output of the relation
  • The values of dependent variables depend on the values of independent variables
  • When the relation represented graphically the independent variable placed on the x-axis and the dependent variable placed on the y-axis

The table:

→ Number of Months:  0       :  1         :  2       :  3          :  4

→ Number of Fish      : 1,024 :  1,280 :  1600 :  2,000  :  2,500

Let us check is their any constant ratio between the consecutive values of the number of fish

∵ 1,280 ÷ 1,024 = 1.25

∵ 1,600 ÷ 1.280 = 1.25

∵ 2,000 ÷ 1,600 = 1.25

∵ 2,500 ÷ 2,000 = 1.25

∴ The table represent an exponential function, where the input

   is the number of months and the output is the number of fish

∵ The input is independent variable

∴ The independent variable is the number of months

∵ The output is the dependent variable

∴ The dependent variable is the number of fish

∵ The independent variable is placed on the x-axis

∴ The number of months should be place on the x-axis

∵ The dependent variable is placed on the y-axis

∴ The number of fish should be place on the y-axis

The independent variable in the relationship is the <u><em>Number of Months</em></u> and should be placed on the<em> </em><u><em>x-axis</em></u>

The dependent variable in the relationship is the <em><u>Number of Fish</u></em> and should be placed on the <u><em>y-axis</em></u>

<u><em /></u>

Learn more:

You can learn more about the relation in brainly.com/question/10708697

#LearnwithBrainly

6 0
3 years ago
HELLPP "Which table represents a linear function?"
Flura [38]

Answer:

1st option

Step-by-step explanation:

The equation for the 2nd option will be y = 1/x which is a hyperbola

The equation for the 3rd option is I'm unsure because it is not linear as it does not have the same jump between the y values

The equation for the 4th option is not linear as it does not have the same jump between the y values

Hope this helped and have a good day

5 0
2 years ago
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