Answer:
a20 = -108
Step-by-step explanation:
53 - 62 = -9
44 - 53 = -9
35 - 44 = -9
Then the intervall is -9
The first number is 63
63 + (19*-9) = 63 - 171 = -108
Let’s define our variables:
D = dad’s age now
S = son’s age now
Given:
D=4S now
D+4=3(S+4) in 4 years
We can expand the second equation:
D+4=3S+12
D=3S+8
And we can subtract it from D=4S
D=4S-(D=3S+8)
0=S-8
S=8 the son’s age now.
D=4S=4(8)=32 the father’s age now
Check:
32+4=3(8+4)
36=3(12)
36=36 Check
I hope this helps you
Answer:
Step-by-step explanation:
idk
Well count up this only shows 5 right? -2 to 3 is 5 then 3 to 8 is 5 then 8 to 13 is 5 then 13 to 18 is 5. Keep going till you get to the 9th number.
6 7 8 9
____________
23 28 33 38
38 is your final answer. Well I just hope you said 9th if not go down or up as I just told you. (by 5's)
Hoped I helped!
Answer:
The price now is 300$.
Step-by-step explanation:
The problem is related to percentages.
It is provided that the price of meal at a restaurant a couple of decades (20 years) ago was 100$.
Now the price is 200% more than what it was 20 years ago,i.e. the price increased by 200%.
Compute the new price as follows:
![New-Price=100\$+[100\$\times200\%]\\= 100\$+[100\times\frac{200}{100}]\$\\ =100\$+200\$\\=300\$](https://tex.z-dn.net/?f=New-Price%3D100%5C%24%2B%5B100%5C%24%5Ctimes200%5C%25%5D%5C%5C%3D%20100%5C%24%2B%5B100%5Ctimes%5Cfrac%7B200%7D%7B100%7D%5D%5C%24%5C%5C%20%3D100%5C%24%2B200%5C%24%5C%5C%3D300%5C%24)
Thus, the price of the meal now is 300$.
