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cestrela7 [59]
3 years ago
15

Which statement is not true by CPCTC

Mathematics
2 answers:
Nana76 [90]3 years ago
5 0
The answer to your question is the third statement 

mel-nik [20]3 years ago
3 0
Yep I would say third as well
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Ellie buys a baseball for $13 plus an 8% tax. Jason buys a phone case for $16 plus an 8% tax. Enter the difference in the amount
Over [174]
Ellie baseball will be $14.04 because it’s a 8% tax the difference is cheaper than Jason.
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3 years ago
Help math problem please
3241004551 [841]
What you would do is 1/4+1/4=1/2. Then since we know Brookfield to Oakdale is 2/3, do 2/3-1/2. To do this we find common denominators, then do 4/6-3/6 to is get an answer of 1/6 mile. Tell me if this is correct.
7 0
3 years ago
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
Jorge Rivera's first four exam grades are 73, 69, 85, and 80. What grade does jorge need on the 5th exam to have an average of 8
siniylev [52]

the umbrella academi :v

8 0
3 years ago
Solve with the Quadratic Formula:
Gwar [14]
Let the width be x.
Length = 2x -1

The area of rectangle = 45 cm²

x*(2x -1) = 45

2x² -x = 45

2x² -x - 45 = 0              This is a quadratic equation

comparing to ax² + bx + c = 0,      a = 2, b = -1, c = -45


x =  (-b + √(b² -4ac)) / 2a      or   (-b - √(b² -4ac)) / 2a

x =  (- -1 + √((-1)² -4*2*-45)) / 2*2      or   (- -1 - √((-1)² -4*2*-45)) / 2*2

x =   (1 + √(1 +360)) / 2*2      or   (1 - √(1 + 360) / 2*2

x =   (1 + √361) / 4     or   (1 - √361) / 4

x =   (1 + 19) / 4     or   (1 - 19) / 4

x =  20/4  or  -18/4

x = 5 or -4.5

x can't be negative since we are solving for side.

x = 5 as the only valid solution.

Recall, the width = x = 5.
Length = 2x - 1 = 2*5 - 1 = 10 - 1 = 9

Hence the length = 9cm , and width = 5cm
6 0
4 years ago
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