Perimeter = lenght×2 + width×2
Let x represent the width
80 = 2(2x - 5) + 2x
Find for x
80 = -10 + 4x + 2x
80 + 10 = 6x
90 = 6x
90/6 = x
x = 15
The width is 15 cm
The length is 2×15 - 5 = 25
A) cranberry : apple
3 : 5
6 : 10
12 : 20
30 : 50
33 : 55
b)
These quantities are proportional because they are the same as 3/5 just
doubled, tripled etc. For example, 3/5 is proportional to 6/10 because
both the numbers were multiplied by the same number. In this case it's 2
Answer:
4 × 10^2 M
Step-by-step explanation:
We are given;
Speed of light as 3.0 × 10^8 m/s
Frequency of radio wave as 7.5 × 10^5 Hz
We are required to determine the wavelength.
Using the formula;
wavelength, λ = v/f
Note; Radio wave is an electromagnetic wave, therefore travels with the speed of light.
Therefore;
wavelength, λ = 3.0 × 10^8 m/s ÷ 7.5 × 10^5 Hz
= 4 × 10^2 M
Hence, the wavelength of the radio wave is 4 × 10^2 M
Answer:
-2
Step-by-step explanation:
-6x - 9 ≤ 3
+ 9 ≤ +9
-6x ≤ 12
---- -----
-6 -6
x ≤ -2
Answer:173/10
Step-by-step explanation:
