This could be wrong because I'm going into the fifth grade but wouldn't it just be (7,-3)?
Answer:
360 in.
Step-by-step explanation:
1 yd = 36 in.
10 yd = 10 * 1 yd = 10 * 36 in. = 360 in.
The result is
9
a
2
−
16
The reason is the following:
The problem is an example of a notable product: "the sum multiplied by the diference is equal to the difference of squares", that is to say:
(
a
+
b
)
⋅
(
a
−
b
)
=
a
2
−
b
2
.
By applying this to our question, we obtain that:
(
3
a
−
4
)
⋅
(
3
a
+
4
)
=
(
3
a
)
2
−
(
4
)
2
=
9
a
2
−
16
.
-5 and -4.
-5 times -4 is 20 while adding -5 and -4 it equals -9. (don't be very harsh if i got this wrong)
6 ,12 ,18, 24, 30 ,36 ,42, 48,
She will keep adding by 6
