Answer:
n = -2
Step-by-step explanation:
-38 = -2n -12 +18n +6
-38 =16n -6
-38 +6 =16n
-32= 16n
n=-2
Answer:
3√r = k/s²
s²r^1/3 = k
Step-by-step explanation:
Cube root of r = 3√r
Square of s = s²
cube root of r varies inversely with the square of s
3√r = k/s²
Cross product
3√r * s² = k
s²r^1/3 = k
Note:
r^1/3
= 3√r
289 X 7 = 2023
2022 2023 2024
2023 IS BETWEEM 2022 AND 2024 (:
Answer:
(–19, 55)
Step-by-step explanation:
y = –3x – 2 equation 1
5x + 2y = 15 equation 2
using equation 1 in equation 2 we have:
5x + 2(–3x – 2) = 15
5x –6x – 4 = 15
-x = 15+4
x=-19
using equation 1:
y = -3(-19)- 2
y= 57-2
y= 55
Answer:
7 km
Step-by-step explanation:
Substitute:
The equation for area of a semi-circle is
A =
76.97 =
Multiply by 2 on both sides:
2(76.97) = ( )2
153.94 =
Divide by pi on both sides:
153.94 =
/pi /pi
49.03 ≈
Find the square root:
7 = r