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Gala2k [10]
4 years ago
7

If y = 3x squared + 4 find the value of y when x = 2

Mathematics
2 answers:
qaws [65]4 years ago
8 0

Answer:

The value of y is 16.

Step-by-step explanation:

You have to substitute x = 2 into the equation :

y =  {3x}^{2}  + 4

Let x = 2,

y = 3( {2)}^{2}  + 4

y = 3(4) + 4

y = 12 + 4

y = 16

Snezhnost [94]4 years ago
3 0

Answer:

y = 16

Step-by-step explanation:

Let's solve your equation together

3x^2 + 4

We have been given that x = 2

So first we must replace x by 2.

y = 3(2)^2 + 4

Now we solve the equation

2^2 = 4

y = 3(4) + 4

3 * 4 = 12

y = 12 + 4

12 + 4 = 16

y = 16

Hope this helps :)

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What’s the mean I’m really dumb and can’t do it x
Julli [10]

Multiply the values across the rows. So you'll multiply each mark with its corresponding frequency

6*5 = 30

7*4 = 28

8*7 = 56

9*10 = 90

10*4 = 40

Then add up those results

30+28+56+90+40 = 244

Finally, you divide by 30 since this is the total number of scores (add up everything in the second column of the original table to get 30)

So we end up with the mean being 244/30 = 8.133 approximately

Round that value however you need to.

6 0
4 years ago
Tara has two bags of M&M’s. The first bag contains 6 red, 5 blue, and 4 green M&M’s. The second bag contains 3 red, 2 bl
MA_775_DIABLO [31]

Answer:

29.6667%

Step-by-step explanation:

In first bag there is 15 M&M's ANd second bag has a total of 9 M&M's so that means there are a total of 24 M&M's.

In the first bag there is 5 blue M&M's and in the second bag there is a total of 2 blue M&M's so there is a total of 7 blue M&M's all together.

so there are 7/24 M&M's ( what were going to do it convert it into percents.

To do this were going to use these steps.

  1. were going to divided the number of blue M&M's by the total of M&M's all together so 7 divided by 24=?
  2. And then next we are going to multiply the result by 100 which=?

Calculations

7 divided by 24=0.291666.

Ok so now what is 0.291666 x 100=?

0.291666 x 100=29.6667 and there is our final answer.

Hope it helps have awesome day:)

8 0
2 years ago
Rewrite the function y = x^2 - 6x + 14 in vertex form, y = (x - h)^2 + k.
Mila [183]

the equation of a parabola in

vertex form

is.


¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

∣

∣

∣

2

2

y

=

a

(

x

−

h

)

2

+

k

2

2

∣

∣

∣

−−−−−−−−−−−−−−−−−−−−−


where

(

h

,

k

)

are the coordinates of the vertex and a


is a multiplier


to obtain this form

complete the square


y

=

x

2

+

2

(

4

)

x

+

16

−

16

+

14


⇒

y

=

(

x

+

4

)

2

−

2

←

in vertex form


⇒

vertex

=

(

−

4

,

−

2

)


to obtain the intercepts


∙

let x = 0, in the equation for y-intercept


∙

let y = 0, in the equation for x-intercept


x

=

0

⇒

y

=

0

+

0

+

14

=

14

←

y-intercept


y

=

0

⇒

(

x

+

4

)

2

−

2

=

0

←

add 2 to both sides


⇒

(

x

+

4

)

2

=

2


take the square root of both sides


√

(

x

+

4

)

2

=

±

√

2

←

note plus or minus


⇒

x

+

4

=

±

√

2

←

subtract 4 from both sides


⇒

x

=

−

4

±

√

2

←

exact values

graph{(y-x^2-8x-14)((x+4)^2+(y+2)^2-0.04)=0 [-10, 10, -5, 5]}

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3 years ago
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Alla [95]

Answer:

40%

Step-by-step explanation:

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Answer:

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

Step-by-step explanation:

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3 years ago
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