A.) A dimensionless quantity never has a unit...
Answer:
300
Step-by-step explanation:
2:3 means total 5 so 500/5=100
2×100=200 picture books
3×100=300 chapter books
Answer:
<u>Option B</u>
Step-by-step explanation:
The question is as following:
Step Work Justification
1 2x + 6x − 4 = 12
2 8x − 4 = 12
3 8x = 16
4 x = 2
Which of the following has all of the correct justifications Wyatt used to solve this equation?
A. Distributive property. 2. Combine like terms. 3. Addition property of equality. 4. Division property of equality.
B. Multiplication property of equality. 2. Combine like terms. 3. Addition property of equality. 4. Division property of equality.
C. Distributive property. 2. Combine like terms. 3. Subtraction property of equality. 4. Division property of equality.
D. Multiplication property of equality. 2. Combine like terms. 3. Subtraction property of equality. 4. Division property of equality
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<u>The answer:</u>
Step Work Justification
multiply both sides by 2
1) 2x + 6x − 4 = 12 ⇒ {Multiplication property of equality}
{Combine like terms}
2) 8x − 4 = 12 ⇒
Adding 4 both sides
3) 8x = 16 ⇒ {Addition property of equality}
divide both sides by 8
4) x = 2 ⇒ {Division property of equality}
The answer is option B
(B) Multiplication property of equality. 2. Combine like terms. 3. Addition property of equality. 4. Division property of equality.
Answer:
Velocity in still air is = 960 miles per hour
Velocity of wind = 230 miles per hour.
Step-by-step explanation:
The velocity when flying against the wind = 2920 / 4 = 730 miles per hour.
The velocity when flying with the wind = 7140 / 6 = 1190
Let the rate of jet in still Air = x
Let the rate of jet in wind = y
Therefore, velocity against wind = x-y and wind = x + y
x - y = 730
x + y = 1190
Add both equation, 2x = 1920
x = 960
Now find the value of “y” = 1190 – 960 = 230
Thus, velocity in still air is = 960 miles per hour
Velocity of wind = 230 miles per hour.
Answer:
D) 15.5
Step-by-step explanation:
median is the middle line inside the 'box'