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Melanie and Tracy are each finding the equation of the trend line that fits the data in the table below. Melanie uses the ordered pairs (2010, 48) and (2013, 59) to find her equation. Tracy defines x as the number of years since 2010 and uses the ordered pairs (0, 48) and (3, 59) to find her equation. How will the two girls’ equations compare?
General
4 months ago
Which graph represents the given inequality y>5x-2 I don't have the graphs but I really need an answer to this it must be right to get brainliest
General
4 months ago
Explain what the following statement means: Polynomials are closed under the operations of addition and subtraction. Provide one addition example and one subtraction example to demonstrate.ANSWER : If you add two polynomials, the sum is always a polynomial. Example: (2x2 + 3x) + (8x2 - 4x) = 10x2 - x If you subtract two polynomials, the difference is always a polynomial. Example: (2x2 + 3x) - (8x2 - 4x) = -6x2 + 7x
General
4 months ago
Multiple questions PLS HELP1) Find all real zeros of the function y = -5x - 7 a. -5 b. -5, -7 c. 7/5 d. - 7/52) Find all real zeros of the function y = -7x + 3 a. -7, 3 b. 3/7 c. -7 d. -3/73) Find all real zeros of the function 7= - 7x+ 8 a. 8/7 b. -7, 8 c. -8/7 d. -74) Find all real zeros of the function y= 3x + 1 a. 1/3 b. - 1/3 c. 3, 1 d. 3
General
4 months ago
This has 3 questions pls help will give brainliest!!! 1. Select from the drop-down menu to correctly identify the property shown: (-3.4+(-9.2))+(-5.6)=-(3.4+9.2)+-(5.6) Associative property , Communative property , Opposite of a sum property 2. The sale price of an item is 0.75 the original price of the item, x. Which statement explains why both 3/4x and 0.75x can find the sale price of the item? A. Multiplying by 4/3 Is the same as multiplying by 0.8 B. The fraction 3/4 Is the same as the decimal 0.w5 therefore, 3/5 can be written as 0.25x C. Multiplying by 3/4 Is the same as multiplying by 75% D. The expressions are not equivalent. 3. Caleb practices piano 20 minutes per day, and he practices guitar 30 minutes per day. Which expression represents the never of Caleb spends practicing instrument after d days A. 20+d+30+d B. 20d+30d C. 20 (30+d) D. d (20+30)
General
4 months ago
Which expression can be used to convert 80 US dollars (USD) to Australian dollars (AUD)? 1 USD = 1.0343 AUD 1 AUD = 0.9668 USDA) 80 USD x (0.9668 USD / 1 AUD)B) 80 USD x (1.0343 USD / 1 AUD)C) 80 USD x (0.9668 AUD / 1 USD)D) 80 USD x (1.0343 AUD / 1 USD)(A is incorrect)
General
4 months ago
Given: Base ∠BAC and ∠ACB are congruent. Prove: ΔABC is an isosceles triangle. When completed (fill in the blanks), the following paragraph proves that Line segment AB is congruent to Line segment BC making ΔABC an isosceles triangle. Construct a perpendicular bisector from point B to Line segment AC. Label the point of intersection between this perpendicular bisector and Line segment AC as point D: m∠BDA and m∠BDC is 90° by the definition of a perpendicular bisector. ∠BDA is congruent to ∠BDC by the _______________. Line segment AD is congruent to Line segment DC by _______________. ΔBAD is congruent to ΔBCD by the Angle-Side-Angle (ASA) Postulate. Line segment AB is congruent to Line segment BC because corresponding parts of congruent triangles are congruent (CPCTC). Consequently, ΔABC is isosceles by definition of an isosceles triangle.
General
4 months ago
Describe how to find the sale price of an item that has been discounted 25%. Multiply the original price by % to find the sale price.
General
4 months ago
Stereo has a list price of $150 but is on sale for 20% off the list price what is the sale price of the stereo???A. 120B.130C.147D.180
General
4 months ago
The verticies of a triangle on the coordinate plane are A(0, 0), B(2, 0) and C(0, 2). What would be the coordinates of triangle A'B'C' if triangle ABC was dilated by a factor of 13?A) A'(0, 0) B'(3, 0) C'(0, 3) B) The vertices would not change. C) A'(0, 0) B'(23, 0) C'(0, 23) D) A'(13, 13) B'(73, 13) C'(13, 73)
General
4 months ago
Amy bought a box of chocolates originally priced at $14. She received a 15% discount on the original price, and then she paid a 4% sales tax on the purchase price. What is the total amount that Amy paid for the box of chocolates?
General
4 months ago
A chef plans to mix 100% vinegar with Italian dressing. The Italian dressing contains 16% vinegar. The chef wants to make 210 milliliters of a mixture that contains 48% vinegar. How much vinegar and how much Italian dressing should she use?
General
4 months ago
Write the standard form of the line that passes through the given points. Include your work in your final answer. Type your answer in the box provided or use the upload option to submit your solution. (-1, -3) and (2, 1)
General
4 months ago
does −4x−7+10x=−7+6x have one solution, infinite solutions, or no solution
General
4 months ago
What is the equation of a line that is perpendicular to 2x+y=−4 and passes through the point (2, −8) ?Enter your equation in the box.
General
4 months ago
Determine which functions have two real number zeros by calculating the discriminant, b2 – 4ac. Check all that apply. Please answer f(x) = x2 + 6x + 8 g(x) = x2 + 4x + 8 h(x) = x2 – 12x + 32 k(x) = x2 + 4x – 1 p(x) = 5x2 + 5x + 4 t(x) = x2 – 2x – 15
General
4 months ago
Fifty liters of a 40% acid solution is obtained by mixing a 25% solution with a 50% solution.(a) Write a system of equations in which one equation represents the amount of final mixture required and the other represents the percent of acid in the final mixture. Let x and y represent the amounts of the 25% and 50% solutions, respectively.
General
4 months ago
Starting at sea level, a submarine descended at a constant rate to a depth of −34 mile relative to sea level in 5 minutes. What was the submarine's depth relative to sea level after the first minute? Enter your answer in the box as a fraction in simplest form.
General
4 months ago
What is the total perimeter of the pitch and seating area?What is the total area of the pitch and seating area?
General
4 months ago
Which case would be the most appropriate for a drum with a volume of 14,000 cm3?Volume of a cylinder: V = area of the base x heightV = πr2hπ = 3.14
General
4 months ago
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