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Nutka1998 [239]
3 years ago
5

What is the value of 3x^2– 7x + 9 when x = 4?

Mathematics
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

29

Step-by-step explanation:

just substitute x with 4 in the equation :)

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(14x-13) (4x+13) (6x+2)
Diano4ka-milaya [45]

Answer:

x = 7.416666667

Set everything equal to 180 (the total # of degrees in a triangle)

180 = 14x-13 + 4x+13 + 6x+2

Combine the variables

180 = 24x - 13 + 13 + 2

Do the math

180 = 24x +2

178 = 24x

x = 7.416666667

3 0
2 years ago
if karen was 27 and her oldest brother was 29 years older and and there dad was 22 when Karen was born how old is the dad?
g100num [7]

Answer:

49

Step-by-step explanation:

When Karen was born, the dad is 22 so Karen is now 27 which means the dad is 22+27= 49

8 0
3 years ago
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Given A is between Y and Z, and YA=14x, AZ=10x and YZ=12x+48, solve for x​
iren [92.7K]

Answer:The answers are: 4 40 56 96.

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3 years ago
Hey can I have some quick help please?<br> Is the answer I chose correct?
Gennadij [26K]

Answer:

Yes, I am 99% sure your right.

8 0
3 years ago
Name the line of reflection used to map each preimage to its image
rewona [7]

Answer:

From the picture attached,

9). When pre-image KLMN is a reflected across x = -2, we get image K'L'M'N'.

   Therefore, line of reflection will be x = -2

10). In this picture line of reflection which passes through origin (0, 0) and slope = 1 will be,

y = x.

11). Since, all the points of image and preimage points are equidistant from x-axis, line of reflection will be x-axis or y = 0.

12). Line passing through midpoint of the line joining BB' will be the line of reflection.

Coordinates of B → (5, 3)

Coordinates of B' → (5, 7)

Coordinates of BB' →  → (5, 5)

Therefore, line of reflection will be y = 5.

13). Coordinates of G → (2, 5)

    Coordinates of G' → (-2, 5)

    Midpoint joining the segment GG' →  → (0, 5)

    Therefore, line of reflection → x = 0

14). Line of reflection passing through (0, 0) and slope = -1

    y = -x

Step-by-step explanation:

3 0
2 years ago
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