A group of 5 girls went to the library to study for an upcoming biology test. Each girl studied for the amount of time. If the total amount of time they spent studying was 8 hours, how long did each girl study for?
x represents how long each girl studied for
5x = 8 divide 5 on both sides and you get 1.6, so the amount each girl spent studying is 1 hour and 36 minutes
Answer:
C {(-4, 2), (-2, 1), (2, 0), (4, 5)}
Step-by-step explanation:
The domain is the set of x-values for which the function is defined.
<h3>Choices</h3>
A) The relation is <em>only defined for x=2</em>. It is not a function, because x=2 maps to an infinite number of y-values.
B) The domain is an infinite number of x-values. The listed values are included in the domain, but they are <em>not the entire domain</em>.
C) The list of first-values in the ordered pairs is the domain of the function it matches the given domain.
D) The list of first-values in the ordered pairs is <em>not the same as the given domain</em>.
A fraction is numerator over denominator, most of the time whole numbers
1/2(x - 3) = 2/3(x - 8)
<em><u>Distributive property on both sides.</u></em>
0.5x - 1.5 = 0.7x -5.3
<em><u>Add 5.3 to both sides.</u></em>
0.5x + 3.8 = 0.7x
<em><u>Subtract 0.5x from both sides.</u></em>
3.8 = 0.2x
<em><u>Multiply both sides by 5.</u></em>
x = 19 (This is your answer.)
Let me know if you have any other questions. :)
1.5X10^8-5.8X10^7
1.5X10^8-0.58X10^8
(1.5-0.58)(10^8)
(0.92)(10^8)
0.92X10^8
9.2X10^7