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vekshin1
4 years ago
15

I NEED HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
diamong [38]4 years ago
6 0
Geez that is real complicated sorry I’m not sure just go with your gut
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Solve for x round to the nearest tenth
loris [4]

Answer:

5.4

Answer: The value of x rounded to the nearest tenth is 5.4.

Step-by-step explanation:

4 0
3 years ago
How much will a train travel in 3/4 of an hour if the average speed is 50 mph?
Aloiza [94]
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!
4 0
4 years ago
Read 2 more answers
Y = x - 2<br> -2x + 3y = -1 <br> What is x and y?
Sergio039 [100]

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>

  1. Substitute in <em>y</em>:                    -2x + 3(x - 2) = -1
  2. Distribute 3:                         -2x + 3x - 6 = -1
  3. Combine like terms:            x - 6 = -1
  4. Isolate <em>x</em>:                               x = 5

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                    y = x - 2
  2. Substitute in <em>x</em>:                       y = 5 - 2
  3. Subtract:                                 y = 3

7 0
3 years ago
The scores on a psychology exam were normally distributed with a mean of 57 and a standard deviation of 9. A failing grade on th
mylen [45]
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.
6 0
3 years ago
What expression can be used to find 7(6 1/8)
9966 [12]

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

3 0
3 years ago
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