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Colt1911 [192]
3 years ago
8

EXPERTS/ACE/GENIUSES PLZ HELP

Mathematics
1 answer:
Marta_Voda [28]3 years ago
5 0
Sqrt(15) would be irrational

Answer is B
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the zero of the quadratic polynomial x^2+99x+127 are a both positive b both negative c one +ve one-ve d both equal. please help​
Paha777 [63]

Step-by-step explanation:

By Descrates' Rule of Signs,

x² + 99x + 127 changes sign 0 times.

Hence it has 0 positive roots.

Since the discriminant b² - 4ac is also positive, there are 2 real distinct roots.

Hence both the roots are negative. (B)

7 0
3 years ago
Read 2 more answers
How do I write an expression for n . a using only addition
Taya2010 [7]

Answer:

i don't know  anymore

Step-by-step explanation: I don't know anymore

3 0
2 years ago
1. Cooking oil is sold in two sizes of cans.
iren2701 [21]

Answer:

Small can

Step-by-step explanation:

Price per liter for Small can = 2.20 /4 = 0.55

Price per liter for Large can = 3.24 / 6 = 0.54

0.55>0.54

small can > large can

I hope im right!!!

4 0
3 years ago
X^2+y^2+14x+10y=7 <br> center and radius
Sholpan [36]
(x-a)^2+(y-b)^2=r^2\\\\(a;\ b)-the\ coordinates\ of\ the\ center\\r-the\ radius\\\\==================================\\Use:(k+l)^2=k^2+2kl+l^2\ (*)\\==================================

x^2+y^2+14x+10y=7\\\\x^2+14x+y^2+10y=7\\\\x^2+2x\cdot7+y^2+2y\cdot5=7\\\\\underbrace{x^2+2x\cdot7+7^2}_{Use\ (*)}-7^2+\underbrace{y^2+2y\cdot5+5^2}_{Use\ (*)}-5^2=7\\\\(x+7)^2-49+(y+5)^2-25=7\\\\(x+7)^2+(y+5)^2-74=7\ \ \ \ |add\ 74\ to\both\ sides\\\\(x+7)^2+(y+5)^2=81\\\\(x+7)^2+(y+5)^2=9^2

Answer:\\\boxed{(-7;-5)-center;\ 9-radius}
8 0
3 years ago
Read 2 more answers
Write the coordinates of the vertices after a translation 4 units right and 4 units down.
m_a_m_a [10]

Answer:

  • T'(1, -2)
  • U'(1, -1)
  • V'(2, -1)
  • W'(2,-2)

Step-by-step explanation:

Translation 4 right adds 4 to each x-coordinate.

Translation 4 down subtracts 4 from each y-coordinate.

Doing this arithmetic gives you the results above.

8 0
3 years ago
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