Can someone help me I have two more other questions they are 15 points each I just posted them right now! Thanks so much
1 answer:
Answer:
$10 coins: 21
$20 coins: 24
Step-by-step explanation:
heyy me again
So we can create 2 equations where
x = number of $10 coins
y = number of $20 coins:
x + y = 45
10x + 20y = 690
we can move equation 1 around so that we can get a value of x
x = 45 - y
now we can substitute x into the second equation
10(45 - y) + 20y = 690
450 - 10y + 20y = 690
10y = 240
y = 24
Now plug in y back into the first equation
x = 45 - y
x = 45 - 24
x = 21
You might be interested in
Answer: 8 textbooks
Step-by-step explanation:
Sold 40 notebooks = 40 x $4 = $160
$800 - $160 = $640 left to sell
$640/$80 (cost of textbook) = 8 textbooks need to be sold
Answer:
b
Step-by-step explanation:
is the proper answer
Answer:5400
Step-by-step explanation:9•6= 54
Add both zeros from 900 at the end and it’s 5400
Answer:
Step-by-step explanation:
1) y intercept is 0
2) y intercept is 1
3) y intercept is -4
4) y intercept is 4
5) y intercept is 5
6) y intercept is 0
7) y intercept is 5
8) y intercept is 4
2 triangles of 4x3/2 each. So 12.
One 3x20 rect = 60
One 4x20 rect = 80
One 5x20 rect = 100.
So total <u>252</u>
