Answer:
x = 5 and value of y = 2
Step-by-step explanation:
using substitution method
let;
x + 4y = 13...................... equation 1
x - y = 3............................... equation 2
from equation 2
x - y = 3.................................... eqn 2
x = y + 3.......................................... equation 3
put x = y + 3 in equation 1
x + 4y = 13...................... equation 1
y + 3 + 4y = 13
5y = 13 - 3
5y = 10
divide both sides by 5
i.e
5y/5 = 10/5
y = 2
sustitue for y = 2 in equation 3
x = y + 3.......................................... equation 3
x = 2 + 3
x = 5
therefore the value of x = 5 and value of y = 2
to check if your answwer is correct slot in the value of x and y in any of the equation . e.g
from equation 3
x = y + 3.......................................... equation 3
5= 2 + 3
5 =5....................... proved
Answer:
All convert to terminating decimals.
Step-by-step explanation:
A decimal fraction will terminate if its denominator is a power of 2 or 5 or a product of such powers.
16 is the 4th power of 2, so all fractions that are some multiple of 1/16 will terminate.
Answer:
Let Marshall's salary be
S
m
Let Jim's salary be
S
j
Let the count in years be
n
S
m
=
$
36000
+
4000
n
S
j
=
$
51000
+
1500
n
Set
S
m
=
S
j
For convenience lets drop the $ symbol
⇒
36000
+
4000
n
=
51000
+
1500
n
Subtract
1500
n
and
36000
from both sides
4000
n
−
1500
n
=
51000
−
36000
2500
n
=
15000
Divide both sides by 2500
n
=
15000
2500
=
150
25
=
6
Step-by-step explanation:
Answer:
Perry started with 40 stamps
Step-by-step explanation:
If perry is starting with 40 stamps and gets rid of half of them he will have 20 stamps + 20 stamps would be 40.
Answer:
5e+6
Step-by-step explanation:
