H=how far up from the ground does the ladder touch the building
h/30=sin 25°
h=30 sin 25°
h=12.7 decimeters(1 decimal place)
Answer: The height that the ladder touch the building far up from the ground is 12.7 decimeters.

8 0

3 years ago

Surface area in terms of pi?

Lunna [17]

$\bf \textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}~~ \begin{cases} r=radius\\ \cline{1-1} V=972\pi \end{cases}\implies 972\pi =\cfrac{4\pi r^3}{3}\implies 2916\pi =4\pi r^3 \\\\\\ \cfrac{2916}{4\pi }=r^3\implies 729=r^3\implies \sqrt[3]{729}=r\implies 9=r \\\\[-0.35em] ~\dotfill\\\\ \textit{surface area of a sphere}\\\\ SA=4\pi r^2\qquad \qquad \implies SA=4\pi (9)^2\implies \boxed{SA=324\pi }$

5 0

3 years ago

The number of students enrolled at a college is 18,000 and grows 6% each year. part c: to find the number of students enrolled a

Alex777 [14]

18000 x 6/100 (Because 6%)
1080 each year.
Hope I helped!

8 0

2 years ago

Find the sum of 2/9+3/5

LUCKY_DIMON [66]

Answer:

37/45

Step-by-step explanation:

Find the least common denominator, in this case, it would be 45

2/9 (multiply both the numerator and denominator by 5) = 10/45

3/5 (multiply both the numerator and denominator by 9) = 27/45

10/45 + 27/45 = 37/45

7 0

2 years ago