Answer:
It gives 7n
Step-by-step explanation:
When a number is multiplied by a number it an actual number
But in this case 7 is to be multiplied by n
Which means
7×n=7n
Answer:
p=30
a=30
Step-by-step explanation:
use pythagorean theorem to find the third side (you can use this bc its a right triangle)
5^2 + 12^2 = c^2
25+144=c^2
169=c^2
13=c
perimeter = 5 + 12 + 13 = 30
using heron's formula where s equals half the perimeter =15
square root[s(s-a)(s-b)(s-c)]
square root[15(15-5)(15-12)(15-13)]
square root[15(10)(3)(2)]
square root[900]
30
Answer:
5(pi) (exactly) or 15.7 (approximately)
Step-by-step explanation:
The length of arc of an entire circle is the circumference of the circle.
The length of arc of a semicircle circle is half of the circumference of the circle.
C = pi * d
For a semicircle:
arc length = 0.5 * pi * d
arc length = 0.5 * pi * 10
arc length = 5(pi)
arc length = 15.7
Answer:
each person should pay $7 each
She makes $9/hour.
$82 (restaurant) - $154 (total) = $72 (babysitting)
$72 made babysitting / 8 hours spent babysitting
= $9/ hour