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kozerog [31]
3 years ago
9

Whats the answer for this 4b²+20b+25

Mathematics
1 answer:
WITCHER [35]3 years ago
7 0
4b²+20b+25=0

Divide everything by 4 

b²+5b+ 6.25=0 

use the quadratic formula 
x= (-b+ or - √b²-4ac) /2a
x= (-5 + or - √5²-4*1*6.25) /2(1)
x= -5/2 so
in this case, b= -5/2

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3 years ago
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3 years ago
Read 2 more answers
1. SOLVE THE EQUATION BELOW
Gemiola [76]

Answer:

 D     F/a =m  Mrs  Kaulter

Step-by-step explanation:

F = ma

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5 0
3 years ago
Suppose you have three nickels in a jar, where the first has Heads on both sides, the second has Tails on both sides, and the th
Cerrena [4.2K]

Answer:

1/3

Step-by-step explanation:

Let A be the event that you grab the fair coin and B be the event that you toss a tail.

P(A) is the probability that you grab the fair coin, which is 1/3

P(B) is the probability that you toss a tail, which is 1/2

P(B|A) is the probability that you toss a tail, given that you grab a fair coin, which is 1/2

P(A|B) is the probability that you grab the fair coin, given that you toss a tail, which we are looking for.

Using Bayes probability theorem we have:

P(A|B) = \frac{P(B|A)P(A)}{P(B)} = \frac{(1/2)*(1/3)}{1/2} = 1/3

5 0
4 years ago
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