Someone help me lol I will mark brainlist+ty+5 star

Mathematics

2 answers:

konstantin123 [22]3 years ago

5 0

Answer:

9x + 3

Step-by-step explanation:

According to segment addition postulate:

UX = UV + VW + WX
UX = 3x + 1 + 4x - 6 + 2x + 8 = 9x + 3

garik1379 [7]3 years ago

4 0

$\\ \rm\longmapsto UX$

$\\ \rm\longmapsto UV+VW+WX$

$\\ \rm\longmapsto 3x+1+4x-6+2x+8$

$\\ \rm\longmapsto 3x+4x+2x+1-6+8$

$\\ \rm\longmapsto 9x+3$

$\\ \rm\longmapsto 3(3x+1)$

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Graph the system of equations: y=-x^2+3x-1 2y-1=x

Nana76 [90]

Y = -x² + 3x - 1
x = 2y - 1

x = 2(-x² + 3x - 1) - 1
x = 2(-x²) + 2(3x) + 2(-1) - 1
x = -2x² + 6x - 2 - 1
x = -2x² + 6x - 3
- x - x 
0 = -2x² + 5x - 3
x = -(5) +/- √((5)² - 4(-2)(-3))
 2(-2)
x = -5 +/- √(25 - 24)
 -4
x = -5 +/- √(1)
 -4
x = -5 +/- 1
 -4
x = -5 + 1 or x = -5 - 1
 -4 -4
x = -4 x = -6
 -4 -4
x = 1 x = 1.5

2y - 1 = x
2y - 1 = 1
 + 1 + 1
 2y = 2
 2 2
 y = 1
(x, y) = (1, 1)
or
2y - 1 = x
2y - 1 = 1.5
 + 1 + 1 
 2y = 2.5
 2 2
 y = 1.25
(x, y) = (1.5, 1.25)
The two solutions is equal to (1, 1) and (1.5, 1.25).

4 0

3 years ago

*please help me out if you know how to solve, last person I asked just put a random awnser for point, the problem is bellow and

kicyunya [14]

For both of these, we will divide the wanted outcome by the number of possible outcomes. We will end up with a decimal. A decimal multiplied by 100 becomes a percent.

[a] 50%

$\displaystyle \frac{\text{wanted outcomes}}{\text{possible outcomes}} =\frac{\text{student failed}}{\text{Period 2's class}} =\frac{12}{24} =0.5,\:0.5*100=50\%$

[b] 52%

$\displaystyle \frac{\text{wanted outcomes}}{\text{possible outcomes}} =\frac{\text{student failed from Period 3}}{\text{fails from both classes}} =\frac{13}{25} =0.52,$