Answer:
Step-by-step explanation:So we know x + y = 21 and 5x +10y = 165 We line them up in columns x + y = 21 5x +10y = 165 To eliminate the x variable, I'll multiply every element in the 1st equation by -5. -5x + -5y = -105 5x + 10y = 165 Now we combine (add) the equations, which eliminates x altogether. 5y = 60 ... y = 12 From there, x + 12 = 21 ... x = 21-12 ... x = 9 You should double check. Do 9 nickles and 12 dimes equal $1.65? A very important thing to remember using this method is to do the same thing to each element in the equation that you change! I hope that helps.
The measure of FHG is 64°.
Answer:
ksajcsxkb asljbas akajs
Step-by-step explanation: sxakn skdj
4 is 16.3, I don't know 5 or 6, 7 is 176, I don't know 8 or 9, 10 is 8.1, I don't know 11, and 12 is 48.
(I used a calculator, lol)
Hello from MrBillDoesMath!
Answer:
a = 2.7
Discussion:
(2/3) ( 6a + 9 ) = 16.8 => the Distributive law
(2/3) (6a) + (2/3)9 = 16.8 =>
4a + 6 = 16.8 => subtract 6 from both sides
4a = 16.8 -6 = 10.8 (divide both sides by 4)
a = 10.8/4
= 2.7
Thank you,
MrB
