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

7 0

3 years ago

Find (a) the circumference and (b) the area of the circle. Use $3.14$ or $\frac{22}{7}$

ohaa [14]

Answer:

$circumference = 2 \pi r = 2 \times 3.14 \ times 1 = 6.28m\\\\Area = \pi r^2 = 3.14 \times 1 \times 1 = 3.14m^2$

8 0

3 years ago

Read 2 more answers

To ________ a formula or equation for a specified variable means to rearrange it so that the variable appears alone on one side

777dan777 [17]

<span>I think they're looking for 'isolate' maybe..or it could be 'solve' </span>

4 0

3 years ago

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What is the distance between the tick marks on the number line?

Zigmanuir [339]

Answer:

a 1/5

Step-by-step explanation:

5 0

3 years ago