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Makovka662 [10]
4 years ago
6

F(x) = { -2x -1, x ≤ 2

Mathematics
1 answer:
Degger [83]4 years ago
8 0

Answer:

Use the appropriate entry method for piecewise functions for the graphing calculator of interest.

Step-by-step explanation:

For Desmos, the entry looks like ...

f(x) = {x ≤ 2: -2x-1,-x+4}

_____

For a TI-84 calculator, the entry may look like ...

Y₁ = (-2X–1)(X≤2) + (-X+4)(X>2)

The symbols ≤ and > come from the TEST menu, which is the (2nd) shift of the MATH key.

Note that the function is the sum of the pieces, each piece multiplied by a test. For something like 0≤x<2, the multiplier would be a pair of tests:

... (0≤X)(X<2)

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3 years ago
Micah places a mirror on the ground 24 feet from the base of a tree. He walks
irina [24]

The height of tree is 8 feet

<h3><u>Solution:</u></h3>

Given, Micah places a mirror on the ground 24 feet from the base of a tree

At that point, Micah's eyes are 6 feet above the ground  

And he is 9 feet from the image in the mirror.  

To find : height of tree = ?

Let "n" be the height of tree

From the question, we can see there is a directly proportional relationship between heights and distances.

Proportional relationships are relationships between two variables where their ratios are equivalent.

\frac{\text { height of micah eyes above ground }}{\text { distance of micah from mirror }}=\frac{\text { height of tree above the ground }}{\text { distance of tree from mirror }}

\begin{array}{l}{\frac{6 \text { feet }}{9 \text { feet }}=\frac{n \text { feet }}{24 \text { feet }}} \\\\ {\frac{6}{9}=\frac{n}{24}} \\\\ {\text { n }=\frac{1}{3} \times 24} \\\\ {\text { n }=8}\end{array}

Hence, the height of the tree is 8 feet

6 0
3 years ago
Write each number as a sum of integers in three different ways.1. 52. +153. O
Verdich [7]

Solution:

Given:

\begin{gathered} 5 \\ +15 \\ 0 \end{gathered}

An integer is a whole number (not a fractional number) that can be positive, negative, or zero.

Writing each number as a sum of integers in three different ways,

\begin{gathered} 5=0+5 \\ 5=3+2 \\ 5=-2+7 \\  \\  \\ +15=11+4 \\ +15=8+7 \\ +15=1+14 \\  \\  \\ 0=-2+2 \\ 0=-5+5 \\ 0=-1+1 \end{gathered}

8 0
1 year ago
A helicopter's rotor sweeps out an area of 121 pi square
Nuetrik [128]

Answer:

<h2>22 meters.</h2>

Step-by-step explanation:

It's important to notice that the area is circular, which is defined by

A= \pi r^{2}

Replacing given values and solving for r, we have

121 \pi = \ pi r^{2} \\121=r^{2}\\ r= \sqrt{121}=11

But, the diameter is twice the radius, so

d=2r=2(11)=22

Therefore, the diameter is 22 meters.

6 0
4 years ago
Find the slope, help plz
miss Akunina [59]

Answer:

-3/4

Step-by-step explanation:

You can use the rise over run method to calculate between the 2 points or y2-y1 over x2-x1. Both methods will work.

If you liked my answer please mark it as the brainliest that would be much appreciated. Thanks! :D

6 0
3 years ago
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