Which equation is true?

1. 5+0=0
2. 15x0=0
3. 1.4+2.7=4.1
4. 2/3 x 5/9 = 7/12

2, and 3

Step-by-step explanation:

equation 1 is incorrect, because (common sense)

equation 2 is correct, 15 zero times =0, because it's like it was never there.

equation 3 is correct because 1.4+2.7 is = to 4.1

equation 4 is incorrect because the answer would correctly be 10/27

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).

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft