Answer:
3/8
Step-by-step explanation:
choices: 6,7,8,9 total: 4
odd numbers: 7,9 total :2
P(odd number) = number of odds/ total
=2/4 = 1/2
Then we spin again
choices: 6,7,8,9 total: 4
number greater than 6: 7,8,9 total :3
P(odd number) = number greater than 6/ total
=3/4
P(odd, > 6) = P(odd, >6) = 1/2 *3/4 = 3/8
b = w + 11
b = 3w − 15
Which of the following methods is correct to find Betsey's and Waldo's age?
Solve w + 11 = 3w − 15 to find the value of w.
Solve b + 11 = 3b − 15 to find the value of b.
Write the points where the graphs of the equations intersect the x-axis.
Write the points where the graphs of the equations intersect the y-axis.
Answer:
Option 1st is correct
Solve w + 11 = 3w − 15 to find the value of w.
Step-by-step explanation:
Here b represents the Betsey's age and w represents the Waldo's age
As per the statement:
Betsey is 11 years older than Waldo. Betsey's age is 15 years less than three times Waldo's age.
The system below models the relationship between b and w:
Equate these equations to solve for w, we have;
Add 15 to both sides we have;
Subtract w from both sides we have;
Divide both sides by 2 we have;
13 = w
or
w = 13 years
Substitute in b = w+11 we have;
b = 13 +11 = 24 years.
b = 24 years
Therefore. following methods is correct to find Betsey's and Waldo's age is:
x- y=-9
x+y=-5
Answer:
x=-7, y=2. (-7, 2).
Step-by-step explanation:
x-y=-9
x+y=-5
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2x=-14
x=-14/2
x=-7
-7-y=-9
y=-7-(-9)
y=-7+9
y=2
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