Answer:
Do the parentheses first. then the operations. Then solve
Step-by-step explanation:
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
Answer:
x = -3/5
Step-by-step explanation:
y = 10x + 6
0 (- 6) = 10x + 6 (- 6)
-6/10 = 10x/10
-6/10 = x
-3/5 = x
Answer:
Any value of
r
makes the equation true.
All real numbers
Interval Notation:
(-Any value of
r
makes the equation true.
All real numbers
Interval Notation:
(
∞
,∞
)
Step-by-step explanation:
Answer:
In standard form,
5004300. Five Millon four thousand and three hundred.