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german
3 years ago
15

Help meeee??!??!?! pleasee

Mathematics
1 answer:
Radda [10]3 years ago
8 0

Answer:

Option B, y = -x + 7

Hope this helps! Have a good day!

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Find the value of x so that the polygons have the same perimeter
mestny [16]

x - 2  + x + 4 + x - 2  + 4 - 4 = x + 3 + x + 4 + x + 5

4x + 4 = 3x + 12

4x - 3x = 12 - 4

x = 8

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Which calculation will give the best estimate of the result of 23 x 4.8?
Aliun [14]
20 x 5 will give your the best estimate of 23x 4.8 because 20 x 5 = 100 and 23 x 4.8 = 110 hope this helped :)
4 0
3 years ago
Read 2 more answers
DUE: 10-31-2019
Mamont248 [21]

Answer:

Here's what I get  

Step-by-step explanation:

I plotted the triangles in the diagram below.

Part A

The scale factor for dilation is ½, because every coordinate has been halved.

  P (8, 0) ⟶ P' (4, 0)

  Q (6, 2) ⟶ Q' (3, 1)

R (-2, -4) ⟶ R' (-1, -2)

Part B

When you reflect a point (x, y) about the y-axis, the y-coordinate remains the same, but the x-coordinate gets the opposite sign. Thus,

  P' (4,0) ⟶ P" (-4,0)

Q' (3,-1) ⟶ Q" (-3,-1)

R' (-1,-2) ⟶ R" (1,-2)

∆P"Q"R" has coordinates P" (-4,0), Q" (-3,-1), R"(1,-2).

Part C

∆PQR and ∆ P"Q"R" are not congruent, because corresponding sides are not equal.

5 0
3 years ago
Solve by completing the square:<br> x^2 + 3x - 9 = 0
tekilochka [14]

Answer:

Step-by-step explanation:

x^2 + 3x - 9 =0

By comparing with the equation ax^2+bx+c = 0,

we get,

a = 1, b=3, c = -9

we know the formula for x is,

x = (-b±√(b^2 - 4ac))/2a

x = (-3±√45)/2

x = (-3±3√5)/2

x = (-3+3√5)/2, (-3-3√5)/2

6 0
3 years ago
Read 2 more answers
What line passes into the points of -2,1 and 3- -1?
nikdorinn [45]

The line that passes through points (-2,1) and (3,-1) is a negative slope

4 0
3 years ago
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