Given that the two of the three lines 3x+4y=5,5x+by=13, and 7x=2425 are perpendicular, compute b. express your answer as a fraction in simplest form.

B = -¹⁵/₄  

Step-by-step explanation:

The slope of 7x = 2425 is 0, and the other two lines have non-zero slopes, so they must be the ones that are perpendicular.

(1)  3x + 4y  = 5

(2) 5x + By = 13

1. Calculate the slope of Line (1)

3x + 4y = 5

Subtract 3x from each side:     4y = -3x + 5

Divide each side by 4:                y = -¾x + ⁵/₄

The slope m₁ = -¾.

2. Calculate the slope of the perpendicular line

m₂ = -1/m₁

m₂ =  ⁴/₃

3. Calculate the slope of Line (2)

5x + By = 13

Subtract 5x from each side:     By = -5x + 13

Divide each side by B:                y = (-5/B)x + 13/B

The slope m = -5/B.

4. Calculate the value of B

If Line (2) is the perpendicular line, then

⁴/₃ = -5/B

Multiply each side by B:     (⁴/₃)B = -5

Multiply each side by 3:         4B = -15

Divide each side by 4:             B = -¹⁵/₄

So, the value of B = -¹⁵/₄, and the equation of Line (2) is

5x - (¹⁵/₄)y = 13

The Figure below shows the graph of Line (1) in purple, and the graph of its perpendicular Line (2) in black.

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

range is infinite on both x and y axis positive and negative

step-by-step explanation: