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WARRIOR [948]
4 years ago
11

Is someone can help me please please i will give 20 points please

Mathematics
1 answer:
joja [24]4 years ago
7 0
With an inverse function, we essentially solve for x and then switch f(x) (which can be called y) with x. For y=x/8-7, we add 7 to both sides to get y+7=x/8. Multiplying both sides by 8, we get 8*(y+7)=x. Switching y and x, we get 8*(x+7)=y. This is shown as the third option.

For y=20-0.25x, we can subtract 20 from both sides to get y-20=-0.25x. Next, we can multiply both sides by -1 to get 0.25x=-y+20=20-y. Multiplying both sides by 4 (since 1/4=0.25 and we want to find x), we get x=4(20-y). Switching x and y, we get y=4(20-x), which is the first option. I challenge you to do the other two based off of the techniques I used!
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Which of the following describes a constitutional monarchy?
77julia77 [94]

Answer:

it is A

Step-by-step explanation:

the king or queen's power is limited by a constitution

6 0
2 years ago
Which of the following is true?
Lilit [14]

Answer:

the second one is correct

4 0
3 years ago
What is the slope of the line that passes through points (0,7) and (-3, 0)? O A Α. 7 ОВ. 7 O C. 13 OD 3​
Luden [163]

Answer:

m=\frac{7}{3}

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

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (0, 7)

Point (-3, 0)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>

  1. Substitute [SF]:                    m=\frac{0-7}{-3-0}
  2. Subtract:                              m=\frac{-7}{-3}
  3. Simplify:                               m=\frac{7}{3}
8 0
3 years ago
Subtract: 2 -(-6)<br> I don’t get it at all :/
Zepler [3.9K]

Answer: 2 -(-6) = 2 + 6 = 8

* (+) - (-) = (+)

<em>If helpful, brainliest please !</em>

3 0
3 years ago
Read 2 more answers
HELP FAST PLEASE!!!
Alisiya [41]

Answer:

y = -0.75x + 9.5

Step-by-step explanation:

Equation of a circle is given as :

(x-a)^{2} + (y-b)^2 = r^{2} \\(x-6)^{2} + (y-5)^2 = 4^{2}\\x^{2} - 12x + 36 + y^{2} -10y + 25 = 16\\x^{2} - 12x  + y^{2} -10y + 45 = 0\\

Take the derivative of the above with respect to x

2x - 12 + 2y dy/dx - 10 dy/dy = 0\\\frac{dx}{dy} = \frac{6 - x}{y-5} \\At (2,8) dy/dx = (6-2)/(8-5) = 4/3\\dy/dx = 4/3\\The slope of the tangent to the circle, m = \frac{-1}{dy/dx} \\m = \frac{-1}{4/3}\\m= -0.75

The equation of the tangent is given by :

y - y_{1} = m(x - x_{1})\\ y - 8 = -0.75(x - 2)\\y - 8 = -0.75x + 1.5\\y = -0.75x + 9.5

8 0
3 years ago
Read 2 more answers
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