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2 years ago

Use the parabola tool to graph the quadratic function f(x)=2x^2−12x+11

Mathematics

1 answer:

GenaCL600 [577]2 years ago

6 0

Answer:

xtp= 4/2

for y- interception subt xTp into equation ytp = 10

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MARK AS BRAINLIEST!!

ddd [48]

Answer:

For part A its A. and for part B its C.

Step-by-step explanation:

7 0

3 years ago

The cost of an uber ride, y, based on miles, x is represented by y = 2/3x + 4. How much does a 21-mile ride cost ?

dangina [55]

Answer:

Step-by-step explanation:

Let the cost of the Uber ride be represented by y in dollars.

Let the number of miles that the Uber rides be represented by x.

The equation relating x and y is expressed as

y = 2/3x + 4.

This is a slope intercept form equation. The slope is 2/3 and it represents the cost per mile.

The cost of a 21 mile ride will be

Substituting x = 21 into the given equation, it becomes

y = 2/3 × 21 + 4 = 14 + 4 = 18

The 21 mile ride costs $18

Part B) The $46 ride will cost

Substituting y = 46 into the given equation, it becomes

46 = 2x/3 + 4 =

46 - 4 = 2x/3

42 = 2x/3

2x = 42 × 3 = 126

x = 126/2 = 63

The $46 ride will be 63 miles

6 0

3 years ago

Micah was asked to add the following expressions: 3x2−x−9x2+3x+2+−2x2+2x+5x2+3x+2 First, he combined like terms in the numerator

shtirl [24]

Micah was asked to add the following expressions:

$\frac{3x^2-x-9}{x^2+3x+2} + \frac{-2x^2+2x+5}{x^2+3x+2}$

First, he combined like terms in the numerator and kept the common denominator

First step is correct. He added the like terms in the numerator, because the denominators are same.

$3x^2 -x -9 -2x^2+2x+5becomes x^2 +x -4$

So he got , $\frac{x^2+x-4}{x^2+3x+2}$

In the next step, he cannot cancel out x^2 from the top and bottom . Because x-4 and 3x+2 are added with x^2

If we have x^2 is multiplied with other terms at the top and bottom , then we can cancel out x^2.

So Micah added the expression incorrectly. Final answer is not correct.

5 0

3 years ago

Which set of ordered pairs does not represent a function? \{(5, -9), (6, -6), (-3, 8), (9, -6)\}{(5,−9),(6,−6),(−3,8),(9,−6)} \{

Nady [450]

Answer:

$\{(-6, -4), (4, -8), (-6, 9), (1, -3)\}$

Step-by-step explanation:

Given

$\{(5, -9), (6, -6), (-3, 8), (9, -6)\}$

$\{(-6, -4), (4, -8), (-6, 9), (1, -3)\}$

$\{(1, -1), (-5, 7), (4, -9), (-9, 7)\}$

$\{(8, -9), (-3, -6), (-4, 4), (1, -5)\}$

Required

Which is not a function

An ordered pair is represented as:

$\{(x_1,y_1),(x_2,y_2),(x_3,y_3),..........,(x_n,y_n)\}$

However, for the ordered pair to be a function; all the x values must be unique (i.e. not repeated)

<em>From options (a) to (d), option (b) has -6 repeated twice. Hence, it is not a function.</em>

4 0

3 years ago

5. What's true of the distribution of any variable, if your model is the mean of that variable? A The distribution of the variab

Alex

The true statement about the distribution of any variable model around the mean is (D) The distribution of the variable is the same shape as the distribution of its residual

<h3>The true statement about the distribution</h3>

From the question, we understand that the distribution of the model is based on its mean or average value.

The above means that the upper and the lower deviations are balanced.

Hence, the true statement about the distribution of any variable model around the mean is (D)