Step-by-step explanation:
13x+7y-2x+6a
combine like terms
=13x-2x+7y+6a
=11x+7y+6a
simplified
Answer: 24 and 76
Step-by-step explanation:
{
d
+
q
=
100
10
d
+
25
q
=
2140
From the first equation, we have
d
=
100
−
q
Substituting that into the second equation, we have
10
(
100
−
q
)
+
25
q
=
2140
⇒
1000
−
10
q
+
25
q
=
2140
⇒
15
q
=
1140
⇒
q
=
1140
15
=
76
Knowing that
q
=
76
we can substitute that value into the first equation to obtain
d
+
76
=
100
∴
d
=
24
Thus, Sue has
24
dimes and
76
quarters.
These all should be correct
Answer:
1/26
Step-by-step explanation:
A deck of cards has 52 cards in it. 2/4 or 1/2 of the deck is red (both hearts and diamonds). Therefore, the chance of pulling any red cared from the deck is 1/26.
