1. Which number is the resolution of m + 90 = 150?
a. 50
b. 60 (my answer)
c. 140
d. 240
2. Which number is the solution of n/3 = -12?
a. -36
b. -4 (my answer)
c. 4
d 36
3. Use mental math to find the solution of 19b = 190.
a. 10
b. 11
c. 171 (my answer)
d. 208
4. Estimate the solution of y + 1.8 = 3.18 to the nearest whole number.
a. 0
b. 1
c. 2
d. 5 (my answer)
1. B
2. A
3.A
4. B
Are the correct answers. 100%
To help with questions like 2 and 3, try using the calculator symbolab. It has helped me out big time.
#1 ok
#2 you have solved 3n = -12
#3 You have solved b/9 = 19
#4 You have solved y-1.8 = 3.18
Did you not check your answers to see whether they actually worked?
planet baab
To find the solution to these equations, we will go step by step:
1. To get the solution of m + 90 = 150, we need to isolate the variable m. We can do this by subtracting 90 from both sides of the equation:
m + 90 - 90 = 150 - 90
m = 60
Therefore, the solution is m = 60. The correct answer is option b.
2. To find the solution of n/3 = -12, we need to isolate the variable n. We can do this by multiplying both sides of the equation by 3:
n/3 * 3 = -12 * 3
n = -36
Therefore, the solution is n = -36. The correct answer is option a.
3. To estimate the solution of 19b = 190, we can simplify the equation. We divide both sides by 19 to isolate the variable b:
19b/19 = 190/19
b = 10
Therefore, the solution is b = 10. The correct answer is option a.
4. To estimate the solution of y + 1.8 = 3.18, we can subtract 1.8 from both sides to isolate the variable y:
y + 1.8 - 1.8 = 3.18 - 1.8
y = 1.38
Since we need to estimate to the nearest whole number, we round 1.38 to the nearest whole number, which is 1.
Therefore, the estimated solution is y ≈ 1. The correct answer is option b.