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blagie [28]
3 years ago
9

Can someone please explain?!

Mathematics
1 answer:
Hoochie [10]3 years ago
5 0
Infinite! You can, for example, add -1 and 1 to the equation and make it equal. In x=5, you can have x=5+1-1. and it'd still be the same. To add on to it, you could do x+1-1=5+1-1, etc..
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Solve using test intervals |x 1|> or equal to 4
insens350 [35]
<span><span>Solve <span>x5 + 3x4 – 23x3 – 51x2 + 94x + 120 </span></span>><span><span> 0</span>. </span></span><span>First, I factor to find the zeroes:<span><span>x5 + 3x4 – 23x3 – 51x2 + 94x + 120</span><span>= (x + 5)(x + 3)(x + 1)(x – 2)(x – 4) = 0</span></span><span>...so </span><span>x = –5, –3, –1, 2,</span><span> and </span>4<span> are the zeroes of this polynomial. (Review how to </span>solve polynomials, if you're not sure how to get this solution.)<span>To solve by the Test-Point Method, I would pick a sample point in each interval, the intervals being </span>(negative infinity, –5)<span>, </span>(–5, –3)<span>, </span>(–3, –1)<span>, </span>(–1, 2)<span>, </span>(2, 4)<span>, and </span>(4, positive infinity). As you can see, if your polynomial or rational function has many factors, the Test-Point Method can become quite time-consuming.<span>To solve by the Factor Method, I would solve each factor for its positivity: </span><span>x + 5 > 0</span><span> for </span><span>x > –5</span>;<span>x + 3 > 0</span><span> for </span><span>x > –3</span><span>; </span><span>x + 1 > 0</span><span> for </span><span>x > –1</span><span>; </span><span>x – 2 > 0</span><span> for </span><span>x > 2</span><span>; and </span><span>x – 4 > 0</span><span> for </span><span>x > 4</span>. Then I draw the grid:...and fill it in:...and solve:<span>Then the solution (remembering to include the endpoints, because this is an "or equal to" inequality) is the set of </span>x-values in the intervals<span> [–5, –3]<span>, </span>[–1, 2]<span>, and </span>[4, positive infinity]</span>. </span>

As you can see, if your polynomial or rational function has many factors, the Factor Method can be much faster.

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4 0
3 years ago
For a science experiment, Ashley removes a cold liquid from a refrigerator and measures its temperature every
zhuklara [117]

Answer:

why are the number wierd i do it but idk the temp for the second one

Step-by-step explanation:

8 0
3 years ago
X=8,2x+y=12 solve by substitution show work
son4ous [18]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

Let's substitute the value of x as 8 in the given equation to find the value of y ~

  • \sf2x + y = 12

  • \sf(2 \times 8) + y = 12

  • \sf16 + y = 12

  • \sf y = 12 - 16

  • \sf y =  - 4

6 0
2 years ago
Write these values in order starting with the smallest . <br> 0.15 12% 1/10 1/20
Vikki [24]

Answer:

1/10, 1/20, 12%, 0.15

Step-by-step explanation:

1/20=1÷20=0.05

12%= 12÷100=0.12

1/10= 1÷10= 0.01

6 0
3 years ago
Ms.Smith has 28 sixth graders and 42 seventh graders for math. If she wants to break the two grades into identical groups withou
Zinaida [17]
Add the 28 and 42
then divide by 2
there should be 35 kids in group
4 0
3 years ago
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