What is the value of y=2x−5 when x=7?

9

Step-by-step explanation:

plus the number that stands for x, 7, into the equation

do multiplication first!

2 × 7 = 14

now subtract

14 - 5 = 9

y=9

y = 9

Step-by-step explanation:

y = 2x - 5

x = 7

y = 2*7 - 5

y = 14 - 5

y = 9

b

step-by-step explanation:

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).