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kykrilka [37]
2 years ago
13

NEEDING HELP ASAP PLEASE :( click on photo

Mathematics
1 answer:
LiRa [457]2 years ago
6 0

9514 1404 393

Answer:

  (1, 1)

Step-by-step explanation:

Did you watch the video?

The y-coefficients have opposite signs and one is a multiple of the other. It is convenient to divide the second equation by 2 and add that to the first.

  (5x -2y) +1/2(4x +4y) = (3) +1/2(8)

  7x = 7 . . . . simplify

  x = 1 . . . . .  divide by 7

__

  4(1) +4y = 8 . . . . substitute for x in the second equation

  4y = 4 . . . . . . . .  subtract 4

  y = 1 . . . . . . . . . . divide by 4

The solution is (x, y) = (1, 1).

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The coordinate of A is -3, and the coordinate of B is 0.5  Find AB ..please explain answer 
vesna_86 [32]
A = (-3)
B = (0.5)

|AB| = |0.5 - (-3)| = |0.5 + 3| = |3.5| = 3.5
3 0
3 years ago
Verne has two pieces of lumber the redwood board is 3/4 inch thick. The pine board is only 1/5 inch thick. How much thicker is t
Mice21 [21]

Answer:

SteThe redwood is 3.75 times thicker

p-by-step explanation:

7 0
2 years ago
Please help!
tensa zangetsu [6.8K]
If the parabola has y = -4 at both x = 2 and x = 3, then since a parabola is symmetric, its axis of symmetry must be between x = 2 and x = 3, or at x = 5/2. Our general equation can then be:
y = a(x - 5/2)^2 + k
Substitute (1, -2): -2 = a(-3/2)^2 + k
-2 = 9a/4 + k
Substitute (2, -4): -4 = a(-1/2)^2 + k
-4 = a/4 + k
Subtracting: 2 = 2a, so a = 1. Substituting back gives k = -17/4.
So the equation is y = (x - 5/2)^2 - 17/4
Expanding: y = x^2 - 5x + 25/4 - 17/4
y = x^2 - 5x + 2 (This is the standard form.)
5 0
3 years ago
PLEASE HURRY!!! PLEASE
noname [10]

Answer:

going horizontally, 15, 3, 9, then 1, 3, 6, then 20, then, 40, 60

Step-by-step explanation:

5 0
2 years ago
6) What are ED and FD?
kolezko [41]

Answer:

ED = 12 and FD = 24

Step-by-step explanation:

See the attached diagram.

The perpendicular distance between the three parallel lines are same i.e. AB = BC = 8

Therefore, the parallel lines will divide any transverse line ( say FD ) in 1 : 1 ratio i.e. will divide equally.

Therefore, FE = ED = 12 units.

Again, FD = FE + ED = 12 + 12 = 24 units. (Answer)

5 0
3 years ago
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