26 total letters, 10 total digits
with repeated letters/numbers:
26 * 26 *26 * 10* 10*10 = 17,576,000 ways
without repeats:
26 *25*24 *10 *9*8 = 11,232,000 ways
By using combine like terms,
<span>8v+w+7-8v+2w
8v-8v+2w+w+7
2w+w+7
3w+7
The answer for this problem is 3w+7</span>
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:
(
−
3
,
1
,
2
)
Equation Form:
x
=
−
3
,
y
=
1
,
z
=
2
Answer:
acute
Step-by-step explanation:
because it is 90 degree
Answer:
112 adult and 288 children
Step-by-step explanation:
x= adult seats
y= children seats
15x + 10y = 4560
x + y = 400 --> y=400-x
so plug 400-x for y in the other equation
15x + 10(400-x)= 4560
now solve this equation
15x + 10(400-x)= 4560 --> 15x + 4000-10x= 4560 --> 15x -10x = 560 --> 5x=560 --> x = 560/5 --> x= 112
now plug in 112 for this equation (x+y=400) --> 112+y=400 --> y= 288
