Answer:
Addition
Step-by-step explanation:
Since you are trying to make x the subject, you need to "get rid" of the -2. So, because it is a negative number, you add 2 to make it 0, which is added to both sides, making x = 7.
Hope this helps!
Answer:
x=10
Step-by-step explanation:
40= 3x+10 (it equals 40 because of vertical angles)
Answer:
Step-by-step explanation:
1-124: (convert 1/5 to tenths)
3/10+2/10=5/10 ->1/2
so you have a 1/2 chance of getting blue or green
1-125:
1/2 of the circle is green and 1/4 of the circle is green (1/2 =2/4)
2/4+1/4=3/4 so you have a 3/4 chance of getting purple or green
1-126
a. x+8=21
just minus 8 from x an 21
x=13
b. x-31=55
add 31 to both sides
x=86
c. 3x=54
you are going to divide 3 from both sides
x=18
d. x/5=10
you want to take the reciprocal of x/5 to get rid of x (5/1) and do that to both sides
x=50
Answer:
None of the above.
Step-by-step explanation:
A. (7 * 4) + (0.5 * 7) = 31.5.
B. (7 + 4) * (0.5 + 4) = 49.5
C. (7 x 4) + (0.5 x 4) = 30.
D. (7 x 4) x (0.5 x 4) = 56.
All of these do not answer 7.5, so your answer is none of the above.
hope this helps.