We are given a concave spherical mirror with the following dimensions:
Radius = 60 cm; D o = 30 cm
Height = 6 cm; h o = 6 cm
First, we need to know the focal length, f, of the object (this should be given). Then we can use the following formulas for calculation:
Assume f = 10 cm
1/ f = 1 /d o + 1 / d i
1 / 10 = 1 / 30 + 1 / d i
d i = 15 cm
Then, calculate for h i:
h i / h o = - d i / d o
h i / 6 = - 15 / 30
h i = - 3 cm
Therefore, the distance of the object from the mirror is 3 centimeters. The negative sign means it is "inverted".
It would be 7:8. Hope that helps.
The values of x and y are 15 and 75, respectively
<h3>How to determine the values of x and y?</h3>
The statements are given as:
- Angle x and angle y are complementary angles
- Angle y is 5 times the size of angle x
These mean that
x + y = 90
y = 5x
Substitute y = 5x in x + y = 90
x + 5x = 90
Evaluate the sum
6x = 90
Divide by 6
x = 15
Substitute x = 15 in y = 5x
y = 5 *15
Evaluate
y = 75
Hence, the values of x and y are 15 and 75, respectively
Read more about complementary angles at
brainly.com/question/15604439
#SPJ1
Answer:
x= 2
Step-by-step explanation:
Given that,
AB = 7.5x
BC = 6x+3
AC = 10x-5
ΔABC is an equilateral triangle.For an equilateral triangle, all sides are equal. ATQ,
AC = BC = AB
10x-5 = 6x+3
Taking like terms together
10x-6x = 5+3
4x = 8
x = 2
Hence, the value of x is equal to 2.
Answer:
2/8
Step-by-step explanation:
1. take 1/8 and multiply it by 2/1
