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LenaWriter [7]
4 years ago
15

−15x + 60 ≤ 105 AND 14x + 11 ≤ −31

Mathematics
2 answers:
Usimov [2.4K]4 years ago
6 0

Answer:

X=-3

Step-by-step explanation:

almond37 [142]4 years ago
5 0
Answer:

1. -15x + 60 <= 105 2. 14x + 11 <= - 31

Step-by-step explanation:
1. x> = - 3
2. x <= - 3

Isolate the variable by dividing each side by factors that don't contain the variable
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Với điều kiện nào của m thì phương trình ( 3m^2 - 4) x -1=m-x có nghiệm duy nhất?
Shtirlitz [24]
 <span>a, để pt có nghiệm thì denta ≥ 0 <=> (3-m)^2 - 4( 3-2m) ≥ 0 <=> m^2 +2m-3 ≥ 0 ( ^ là mũ) 
giải bpt mới tìm được đó ta đc : m ≤ -3 hoặc m ≥ 1 
b, * Xét m-1=0 <=> m=1 => thay m=1 vào pt thì pt có 1 nghiệm là 1/8 (1) 
* Xét m-1 ≠ 0 <=> m ≠ 1 
=> pt có nghiệm khi denta' ≥ <=> (m+3)^2 - (m-1)(-m+2) ≥0 <=> 2m^2 +3m+11 ≥ 0 (*) 
-> bpt (*) có denta < 0 nên nó luôn đúng với mọi m ≠1 -> denta của pt đã cho luôn > 0 với mọi m ≠ 1 (2) 
từ (1) (2) => với mọi m pt luôn có nghiệm </span>
6 0
3 years ago
Which rule describes the transformation? R0, 90° R0, 180° R0, 270° R0, 360°
bekas [8.4K]

Answer:

R0, 90 degrees

Step-by-step explanation:

:)

4 0
3 years ago
Read 2 more answers
G(-2, 5), H(6, 5), J(6, -1)<br> 17. Find the coordinates of the centroid.
adell [148]

The coordinates of centroid are: (10/3, 3)

Step-by-step explanation:

The formula for calculating centroid of a triangle is:

(x,y) = (\frac{x_1+x_2+x_3}{3},\frac{y_1+y_2+y_3}{3})

Here (x1,y1) are the coordinates of first vertex

(x2,y2) are the coordinates of second vertex

(x3,y3) are the coordinates of third vertex

Given:

G(-2,5) = (x1,y1)

H(6,5) =(x2,y2)

J(6,-1) = (x3,y3)

Let I be the centroid of the triangle

Putting the values in the formula

I(x,y) = (\frac{-2+6+6}{3},\frac{5+5+-1}{3})\\= (\frac{10}{3},\frac{9}{3})\\=(\frac{10}{3},3)

The coordinates of centroid are: (10/3, 3)

Keywords: Centroid, Triangle

Learn more about centroid at:

  • brainly.com/question/4824362
  • brainly.com/question/4847829

#LearnwithBrainly

5 0
4 years ago
Kieran subscribes to a text messaging service on his cell phone. His monthly bill for the service is given by the equation b = 0
Marina CMI [18]
B=kt
constant is k
b=0.25t

constant of proprtionality is 0.25
3 0
3 years ago
Read 2 more answers
Can someone help please~~!?
stepladder [879]
12x + 12 + 15 + 3x + 18 = 180
15x + 45 = 180
15x = 180 - 45
15x = 135
x = 135/15
x = 9 

m < A = 12x + 12 = 12(9) + 12 = 108 + 12 = 120....A is 120
m < C = 3x + 18 = 3(9) + 18 = 27 + 18 = 45....C is 45

5 0
4 years ago
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