Answer:
5.4
Answer: The value of x rounded to the nearest tenth is 5.4.
Step-by-step explanation:
Since the train travels 50 miles in 1 hour, to find 3/4 of an hour:
3/4 * 50
75/2 miles
Hope this helps!
Answer:
(5, 3)
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
- Equality Properties
<u>Algebra I</u>
- Solving systems of equations using substitution/elimination
- Solving systems of equations by graphing
Step-by-step explanation:
<u>Step 1: Define systems</u>
y = x - 2
-2x + 3y = -1
<u>Step 2: Solve for </u><em><u>x</u></em>
- Substitute in <em>y</em>: -2x + 3(x - 2) = -1
- Distribute 3: -2x + 3x - 6 = -1
- Combine like terms: x - 6 = -1
- Isolate <em>x</em>: x = 5
<u>Step 3: Solve for </u><em><u>y</u></em>
- Define equation: y = x - 2
- Substitute in <em>x</em>: y = 5 - 2
- Subtract: y = 3
Given:Sample mean= 57
Standard Deviation= 9
score of 59
we go to our standard formula:
(score - mean) / sd = z
(59 - 57) / 9 = z
2/9 = z
0.2222 = z
Failing score cutoff would be equal to Mean - 2SD = 67 - 2(9) = 48 is failing score cutoff.
Answer:
42 7/8
Step-by-step explanation:
7(6 1/8)
~Turn the 7 into a fraction and the other fraction into an improper one
7/1 * 49/8
~Multiply
343/8
~Simplify
42 7/8