Answer:
Socratic app
Step-by-step explanation:
it will help you
324 in is equal to 27 ft200 in is less than 5 yd 2 ft
Answer:
1. B
2. D
3. B
4. D
5. C
6. A
7. What is the estimated sum of "?" what are we estimating?
8. C
9. C
10. B
Step-by-step explanation:
1st question
1/4 ≤ 8/19 ≤ 3/4, so round it to 1/2.
1/4 ≤ 6/13 ≤ 3/4, so round it to 1/2.
Estimating:
1/2 + 1/2 = 1
2nd question
220 9/11 divided by 6 19/20 = 2.99542184434
Rounded/estimated = 3
3rd Question
Estimate 8 1/8 (common sense)
8 1/8 = 8.
4th Question
Assuming cups = 2.
2x24 = 48.
5th Question
3
6th Question
Add and estimate
7th question
What is the estimated sum of "?" what are we estimating?
8th question
6/7 > 3/4, so round it to 1.
1/4 ≤ 4/7 ≤ 3/4, so round it to 1/2.
Estimating:
1 + 1/2 = 1 1/2
9th Question
Round 7 to 8. It is over half, so it would be 8, which = 1
10th Question
Half of 20 = 10, 9 isn't above 10.
So round backwards to 24.
Answer:
60, 180, 120
Step-by-step explanation:
a^2 + b^2 = c^2
x^2 + 3x^2 = 120^2
4x^2=14400
x^2= 3600
square root of x^2= square root of 3600
x= 60
Answer:
7.5 mL of 7% HCl acid solution and 12.5 mL of 15% HCl acid solution
Step-by-step explanation:
If x is the volume of 7% HCl acid solution, and y is the volume of 15% HCl acid solution, then:
x + y = 20
0.07 x + 0.15 y = 0.12 (20)
Solve the system of equations using elimination or substitution. Using substitution:
0.07 x + 0.15 (20 − x) = 0.12 (20)
0.07 x + 3 − 0.15 x = 2.4
0.6 = 0.08 x
x = 7.5
y = 12.5
You need 7.5 mL of 7% HCl acid solution and 12.5 mL of 15% HCl acid solution.
