The Prime Factors of 170: 2 • 5 • 17
Let's solve this problem step-by-step.
STEP-BY-STEP SOLUTION:
We will be using simultaneous equations to solve this problem.
Let's establish the two equations we will be using to solve the problem.
Let Andrew's current age = a
Let Andrew's son's current age = s
Equation No. 1 -
a = 3s
Equation No. 2 -
a - 10 = 5s
To begin with, we will substitute the value of ( a ) from the first equation into the second equation to solve for ( s ).
Equation No. 2 -
a - 10 = 5s
( 3s ) - 10 = 5s
3s - 5s = 10
- 2s = 10
s = 10 / - 2
s = - 5
Next we will substitute the value of ( s ) from the second equation into the first equation to solve for ( a ).
Equation No. 1 -
a = 3s
a = 3 ( - 5 )
a = - 15
FINAL ANSWER:
Therefore, the present age of Andrew is - 15 and the present age of Andrew's son's is - 5.
It isn't possible for someone to be negative years old, but this is the answer that I ibtained from the equations.
Hope this helps! :)
Have a lovely day! <3
Find the slope of the line through (x1,y1) = (0,6) and (x2,y2) = (2,0)
m = (y2 - y1)/(x2 - x1)
m = (0 - 6)/(2 - 0)
m = -6/2
m = -3
The slope is -3
Since we're given the point (0,6) to be on the line, we know the y intercept is b = 6.
Plug m = -3 and b = 6 into y = mx+b to get y = -3x+6
Answer: Choice D) y = -3x+6
Do cross-multiplication
<span>72/x = 60/100 </span>
<span>so </span>
<span>60 times x = 72 times 100 </span>
<span>so </span>
<span>60x = 7200 </span>
<span>then divide both sides by 60 </span>
<span>x = 120</span>
Answer:
* 
= 
= 1
Step-by-step explanation:
