His work should have looked like this.
2x + y = 5
x − 2y = 10
y = 5 − 2x
x − 2(5 − 2x) = 10
x − 10 + 4x = 10
5x − 10 = 10 When he added in both sides, he subtracted 10 from 10,
5x = 20 instead of adding 10 from 10 to make 20.
x = 4
2(4) + y = 5
8 + y = 5
y = -3
1st term: n = 1
apply the value 1 to n in the equation:
1(1-1) - 5
1(0) - 5
0 - 5
- 5
Second term n = 2
2(2 - 1) - 5
2 (1) - 5
2 - 5
-3
Since we know the 1st term is -5 in the sequence and the second is -3, we can assume the answer is D. -5, -3, etc
Answer:
5 batches
Step-by-step explanation:
fist to find how many cupcakes you need multiply the amount of people times amount of cupcakes per person
(if rule is 5 per person)
14x5=70
then you want to find how many batches to make
70/16=4.375
but you and make 0.375 batches so just make 1 more batch
so you should tell your dad to bake 5 batches
The student made a mistake in step 2 because he added it instead of multiplying. So for step 2 the correct answer is 6x-12 =8+2x+6
You might want to look up some webstite that explains how to do it. thats how i learned area. I know the answer but i like to draw it out
