Answer:
Fred = 31
Natalie = 15
Step-by-step explanation:
We have Natalie and Fred's whos age are unknown, we know that when added, their ages equal 46. While when multiplied with Natalie's age 4 times, their ages is 91.
Create two systems :
F = Fred
N = Natalie
F + N = 46
4N + F = 91
We can change the first equation to Natalie's age alone :
N = 46 - F
Now substitute this into the second equation :
4(46 - F) + F = 91
Distribute :
184 - 4F + F = 91
Subtract 184 from both sides :
-4F + F = -93
Add like terms :
-3F = -93
Divide -3 from both sides :
F = 31
Therefore, Fred is 31 years old. Now replace his age in the first equation :
31 + N = 46
46 - 31
15
Therefore, Natalie is 15 years old.
Answer:
a
Step-by-step explanation:
kasi yun ang tama at
nain tindi han ko
In the given question we are faced with an equation that has two unknown variables. So finding the value of the two variables is not possible as finding the value of two variables needs two equations. Only thing possible is finding an equation for the variable y.
-6x + 2y = 16
2y = 16 + 6x
y = (6x + 16)/2
= 3x + 8
So the value of y that can be found from the given equation is y = 3x + 8. I hope this is enough to make you understand the procedure by which these type of problems can be easily solved.
Answer:
x = 8
y = 29
Step-by-step explanation:
8x - 11 = 9x - 19
x - 19 = -11
x = 8
2y - 5 = 9x - 19
2y - 5 = 9(8) - 19
2y - 5 = 72 -19
2y - 5 = 53
2y = 58
y = 29
Answer:
I got you.
Step-by-step explanation:
A. >
B. =
C. >
D. <
