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kirill [66]
3 years ago
15

F(2)=2x^2-5 evalúate the function please

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
7 0

Answer:

x=3

Step-by-step explanation:

plug F(2) for x

2(2)^2-5

2^2=4

2(4)-5=x

8-5=3

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****WILL GIVE BRAINLIEST TO FIRST ANSWERER****
xz_007 [3.2K]
Let's plug in each coordinate and see what we get:

(2, 0, 0)
-> 2A + 0 + 0 = D
-> 2A = D
-> A = D/2

(0, 6, 0)
-> 0 + 6B + 0 = D
-> 6B = D
-> B = D/6

(0, 0, 5)
-> 0 + 0 + 5C = D
-> 5C = D
-> C = D/5

plugging this back into the equation:
(D/2)x + (D/6)y + (D/5)z = D    [then divide through by D]
(1/2)x + (1/6)y + (1/5)z = 1
and since we have to have integer coefficients, 
multiply through by 30

so we get
15x + 5y + 6z = 30



Second question

<span>Take a look at the bottom-left point in the picture.
If you move three points in the y-direction, you'll reach to the  point A.
 If you instead move up 4 points (or in the z-direction), you reach D.
And finally, if you walk back to point F from point E, you'll have moved back 4 points in the x direction. </span>

<span>This gives us our measurements, or dimensions: 3 x 4 x 4.
If this were a rectangular prism, the dimensions would just be each of them multiplied.
 But since it's triangular, you need to divide it by two. That gives you a total volume of
(3x4x4)/2 = 24.</span>

5 0
3 years ago
SOMEONE PLEASE HELP I will mark you BRAINLIST
bazaltina [42]

Answer:

20 degrees

Step-by-step explanation:

both triangles are co friend and 90+70=160 180+160=20

5 0
3 years ago
Read 2 more answers
What are the coordinates of the image Triangle ABC reflection over the line y=x ( please help!!)
S_A_V [24]

Answer:

A (2,-1)

B (-3,-2)

C (-2,1)

Step-by-step explanation:

A (-2,-1), B (3, - 2), and C (2,1)

Image of triangle ABC reflexión over the y: opposite of the x-coordinates. The y coordinates stay the same.

A’ (2,-1), B’ (-3, -2), and C’ (-2,1)

6 0
2 years ago
PLEASE HURRY HELP! <br> Find the product (3a4 + 4)2
natta225 [31]

Answer:

(3a4 + 4)2

= (12a+4)2

= 24a+8

4 0
2 years ago
Find the slope. y=-1/2x
baherus [9]

Answer: The slope is m= 1/2

You can find the slope using slope intercept form which is y=mx+b.

Hope I could help! :)


5 0
3 years ago
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