Answer:
D.
Step-by-step explanation:
4x+3x=7x
18 girls-5%
Total no: of girlsx5/100=18
Total-100x18/5-360 girls
4x+3607x
360-7x-4x
360-3x
x=360/3-120
4x=4x120=480
3x=3x120=360
Total no: of students=480+360-840
Answer:
C and D
Step-by-step explanation:
9% = 9/100 = 0.09 < 0.4
0.125 < 0.4
7.8 * 100 = 780 > 0.4
7/16 = 0.4375 > 0.4
Answer:
D
Step-by-step explanation:
It should be D
For this case what you should do is use the equation shown.
We have then:
n * A = 360
Where:
A=Angle
n: number of divisions.
We observe that there are eight divisions. Thus:
n = 8
We then clear the angle between each division
8 * A = 360
A = 360/8
A = 45 degrees
Answer:
The measure of the angle between the mirrors is:
A = 45 degrees
