Answer:
a = ±b
Step-by-step explanation:
The vertical bars are the symbol for "absolute value", so the equation is saying, "the absolute value of 'a' is equal to the absolute value of 'b'." The absolute value is the magnitude of a number, so, for example, |-3| = 3.
If the magnitudes of two numbers are the same, they may be the same value, or they may differ in sign.
Answer:
15. D
16. C
17. C
18. A
Step-by-step explanation:
Tan is Opposite over Adjacent
Sin is equal to adjacent over hypotenuse
Since 4 hrs is three times the amount of time in the wight room, the equation would be:
4 = 3w or 3w = 4
C
The equivalent expression the equation 12+4x is 4(3+x) using the distributive property.
