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Stells [14]
2 years ago
15

4 Quick algebra 1 question for 50 points!

Mathematics
2 answers:
Juliette [100K]2 years ago
5 0
<h2>A)</h2>

f(x )=  - 2x

<h3>Domain: ( - ∞ , ∞ ) or ] -∞ , ∞ [</h3><h3>Range: ( - ∞ , ∞ ) or ] -∞ , ∞ [</h3>

<h2>B)</h2>

g(x) =  \frac{1}{2} x {}^{2}  + 5

<h3>Domain: ( - ∞ , ∞ ) or ] -∞ , ∞ [</h3><h3>Range: [ 5 , ∞ [ or [ 5 , ∞ )</h3>

<h2>C)</h2><h3>Domain: ( - ∞ , ∞ ) or ] -∞ , ∞ [</h3><h3>Range: ( - ∞ , ∞ ) or ] -∞ , ∞ [</h3>

<h2>D)</h2><h3>Domain: ( - ∞ , ∞ ) or ] -∞ , ∞ [</h3><h3>Range: ( - ∞ , - 3 ] or ] - ∞ , - 3 ] </h3>
Katena32 [7]2 years ago
4 0

#1

  • y=-2x

Domain

  • (-oo,oo)

Range

  • (-oo,oo)

#2

  • y=0.5x²+5

Domain

  • (-oo,oo)

Range

  • [5,oo)

#3

Its graphed

Domain=Range=(-oo,oo)

#4

Domain

  • (-oo,oo)

Range

[-3,-oo) or (-oo,-3]

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Lapatulllka [165]
Area would be 4.52 A= pi x radius squared
Circumference would be 7.54 C= 2 pi radius. Hope that makes sense.
4 0
3 years ago
A train is traveling at a constant speed of 90 miles per hour. How many feet does it travel in 10 seconds? Remember that 1 mile
Flauer [41]

Hi

1 mile = 5280 feet  

at  90 mile per hour, you have  5280 *90  = 475 200 feets  

an hour is  60*60 = 3600 second  

so in 1 second the train travel  :  475 200 /3600 = 4752 /36 = 132 feets

so in 10 seconds  :  132*10 = 1320 feets.

7 0
3 years ago
The length of a rectangle is 5 times larger than x. The width is 4 cm less than the length. The perimeter is at least 96 cm. Wha
Ede4ka [16]

We know that the perimeter of a rectangle = 2(l + w)

l = length

w = width

In our problem,

l = 5x

w = 5x - 4

Let's create an inequality to help us solve this problem.

2(5x + (5x - 4)) ≥ 96

Let's start off by simplifying the terms inside the parentheses.

2(10x - 4) ≥ 96

Distribute the 2

20x - 8 ≥ 96

Add 8 to both sides.

20x ≥ 104

Divide both sides by 20

x ≥ 5.2

Let's plug 5.2 into x for our length and width.

Length = 5x = 5(5.2) = 26 cm

Width = 5x - 4 = 5(5.2) - 4 = 26 - 4 = 22 cm

The smallest possible dimensions for the rectangle are, length = 26 cm and width = 22 cm  

6 0
4 years ago
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Minchanka [31]

Answer:

if the 3 is underlined in number 5 it would be ten thousand, i did 6 and 7 on your first post

9) the blanks, in order, are 6300, 10, 530

Step-by-step explanation:

7 0
3 years ago
Which ratio is equelivent to 24 : 28?​
Vaselesa [24]

Answer:

Hello there!

The correct answer is 18:21.

Hope This Helps You!

Good Luck :)

7 0
3 years ago
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