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DerKrebs [107]
3 years ago
6

A teacher changed to grading from 50 points + 5 for each correct answer to 50 points + 7 for each correct answer. What would cha

nge: the slope. The y intercept, both the slope and the y intercept or nothing
Mathematics
1 answer:
shepuryov [24]3 years ago
6 0

Answer:

The slope

Step-by-step explanation:

Given that:

Initial grading ; For each correct answer : 50 points + 5

New grading ; For each correct answer = 50 + 7 points

The reading coukd be expressed in slope intercept form of an equation as :

Initial grading :

y = 50 + 5x

New grading :

y = 50 + 7x

y = total score ; x = number of correct answers

The change in y per unit change in x which is the slope, is the only difference in the two equations, the intercept (50) stays the same.

Therefore, only the slope changes.

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A rectangular plot of land is 100 feet long and 50 feet wide. how long is the walkway along the diagonal? round to the nearest f
Savatey [412]

Answer:

c. 112 ft

Step-by-step explanation:

the diagonal of a rectangle creates a right-angled triangle with a length and a width of the rectangle (the diagonal is the Hypotenuse or baseline).

and this means we can use Pythagoras :

c² = a² + b²

with c being the Hypotenuse (the baseline opposite of the 90° angle).

diagonal² = 100² + 50² = 10000 + 2500 = 12500

diagonal = sqrt(12500) = 111.8033989... ft ≈ 112 ft

3 0
2 years ago
Choose the ratio that is equivalent to this one: 7/3<br> A) 21/6, B) 21/9, C) 9/21
gogolik [260]

Answer:

B) 21/9

Step-by-step explanation:

21/9 / 3/3 = 7/3

Hope this helps you out ;)

5 0
3 years ago
Read 2 more answers
Solve each system of equations by substitution. Clearly identify your solution.
Stels [109]

Answer:

(-3, 5)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Terms/Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = x + 8

x + y = 2

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y </em>[2nd Equation]:                                                                         x + x + 8 = 2
  2. Combine like terms:                                                                                         2x + 8 = 2
  3. [Subtraction Property of Equality] Subtract 8 on both sides:                        2x = -6
  4. [Division Property of Equality] Divide 2 on both sides:                                  x = -3

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

  1. Substitute in <em>x</em> [1st Equation]:                                                                           y = -3 + 8
  2. Add:                                                                                                                   y = 5
4 0
3 years ago
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-7m-3(-5m-4)=-61<br> My answer is always decimals??? Its weird…please help
MaRussiya [10]

Answer:

M=-73/8

Step-by-step explanation:

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3 years ago
A soccer field is a rectangle 90 meters wide and 120 meters long. The coach asks players to run from one corner to the other cor
Scorpion4ik [409]
Take the width of the field (90 meters) and square it. Then take the length of the field (120 meters) and square it. The you add the two squares together and then find the square root of your answer. So basically 90^2 + 120^2 = 22500. then find the square root of 22500 which is 150 meters. 150 meters is your answer.
6 0
3 years ago
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