Answer: Three less than a number
Step-by-step explanation: z-3 means the three is subtracted from the unknown number.
<em>An unknown quantity less than three. would be 3 - z or z < 3</em>
Answer:
Third option
Step-by-step explanation:
Given the following question where...

A triangle adds up to 180 degrees
50 + 120 = 170 + 10 = 180
The measurement of the third angle is 10 degrees or the third option.
Hope this helps.
Step-by-step explanation:
Given the cube has a length of 1/3 in. The volume of the cube was:
V=length×width×height
V=1/3×1/3×1/3
V=(1/3)^3
V=1/27 in^3
thus the volume of the prism will be given by:
volume=[volume of cube]×[number of cubes]
volume=1/27×84=3 1/3 in^3
Answer:
12
Step-by-step explanation:
Since it is on a right angle we can equation the sum of both angles to 90:
6x-2+20 = 90
Now we simplify:
6x+18=90
Now we subtract 18 from both sides:
6x+18-18=90-18
Simplify:
6x=72
Now we divide both sides by 6:
6x÷6=72÷6
Simplify:
x = 12
<u>Answer:</u>
x = 3, x = -3
<u>Step-by-step explanation:</u>
x² - 25 + 16 = 0
⇒ x² - 9 = 0
• Add 9 to both sides:
⇒ x² = 9
• Square root both sides of equation:
x = 
x = ± 3
x = 3 and x = -3