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3 years ago

Can someone Help please !!!

Mathematics

1 answer:

Sunny_sXe [5.5K]3 years ago

3 0

Answer:

parellel lines have same slope so slope of l2 is same as that of l1

slope of l1 = 5-1/-2-(-3)

4/1

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TEST QUESTION PLS HELP!

Marat540 [252]

It should be f since you can subtract from both sides and divide by negative 1

8 0

3 years ago

you toss a ball that travels on the path y= -0.1x^2 + 2x+4 where x and y are measured in meters. Sketch the path of the ball. Ho

Y_Kistochka [10]

Answer:

The ball goes 14 meters high

Step-by-step explanation:

Given the function

y= -0.1x^2 + 2x + 4

In the figure attached, the function is shown.

The maximum height is equivalent to the vertex of the function, which is obtained as follows:

Xv = -b/(2a) = -2/(2*-0.1) = 10

Yv = -0.1Xv^2 + 2Xv + 4

Yv = -0.1(10)^2 + 2(10) + 4 = 14

8 0

4 years ago

What is the point of intersection of the lines represented by these equations

Marizza181 [45]

<h2>Points of Intersection</h2>

To find the point of intersection of two lines, we can use substitution to find the <em>x</em> and <em>y</em> coordinates.

<h2>Solving the Question</h2>

We're given:

$y = -2x + 2$
$y = x - 4$

Use substitution to find <em>x</em>:

$-2x + 2=x-4\\-2x=x-6\\-3x=-6\\x=2$

Use substitution to find <em>y</em>:

$y=x-4\\y=2-4\\y=-2$

<h2>Answer</h2>

The point of intersection is (2,-2).

3 0

2 years ago

In a survey of 1005 adults, a polling agency asked, "When you retire, do you think you will have enough money to live comfort

Sphinxa [80]

Answer: (0.504, 0.556)

Step-by-step explanation:

Given : Sample size : n= 1005

Number of adults stated that they were worried about having enough money to live comfortably in retirement = 531

Then the proportion of adults stated that they were worried about having enough money to live comfortably in retirement : $p=\dfrac{531}{1005}\approx0.53$

Significance level : $\alpha: 1-0.90=0.1$

Critical value : $z_{\alpha/2}=1.645$

The confidence interval for population proportion is given by :-

$p\pm\ z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}\\\\=0.53\pm(1.645)\sqrt{\dfrac{0.53(1-0.53)}{1005}}\\\\\approx0.53\pm0.026\\\\=(0.504,\ 0.556)$

Hence, the 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement = (0.504, 0.556)

6 0

3 years ago

Write a linear function f with the values f (6) = 8 and f (9) = 3.

ivann1987 [24]

Given:

Two values of a linear function are f (6) = 8 and f (9) = 3.

To find:

The linear function.

Solution:

According to the question f (6) = 8 and f (9) = 3, it means the function passes through (6,8) and (9,3).

If a linear function passes through two points then the equation is

$y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)$