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Arlecino [84]
2 years ago
7

How many solutions does x2 = 9 have?​

Mathematics
2 answers:
MrRa [10]2 years ago
5 0
It should have 2 solutions
beks73 [17]2 years ago
4 0

Answer: 2

Step-by-step explanation:

solutions are +3 and -3

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Determine, using the intermediate value theorem, if the function F(x)=x^3+2x-1 has a zero on the interval [0,1]. Justify your an
SSSSS [86.1K]

Plug x = 0 into the function

f(x) = x^3 + 2x - 1

f(0) = 0^3 + 2(0) - 1

f(0) = -1

Note how the result is negative. The actual number itself doesn't matter. All we care about is the sign of the result.

Repeat for x = 1

f(x) = x^3 + 2x - 1

f(1) = 1^3 + 2(1) - 1

f(1) = 2

This result is positive.

---------------------------

We found that f(0) = -1 and f(1) = 2. The first output -1 is negative while the second output 2 is positive. Going from negative to positive means that, at some point, we will hit y = 0. We might have multiple instances of this happening, or just one. We don't know for sure. The only thing we do know is that there is at least one root in this interval.

To actually find this root, you'll need to use a graphing calculator because the root is some complicated decimal value. Using a graphing calculator, you should find the root to be approximately 0.4533976515

7 0
3 years ago
Please help what does x equal?<br>thanks guys ​
loris [4]

Answer: 138°

Step-by-step explanation: since the line is crossing parallel lines the number opposite of your x is the same as 138°

8 0
3 years ago
Read 2 more answers
What is the solution set?<br><br> A.) (0, -2)<br> B.) (2, 0)<br> C.) (7, 0)<br> D.) (5, 3)
max2010maxim [7]

Answer:

D.) (5, 3)

Step-by-step explanation:

Solution is where two lines intersect

Both lines intersect at x = 5 and y = 3

Answer

D.) (5, 3)

8 0
3 years ago
ANSWER ASAP<br><br> x+4.5<br><br> x= 1.2<br><br> A: 3.3<br> B: 6.7<br> C: 5.7
swat32

Answer:

C.5.7

Step-by-step explanation:

plug in the x value then add 4.5 to 1.2 and booyyah

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3 years ago
Cynthia ran 4 laps in 40 min.<br><br><br><br><br> What is the rate of number of laps to minutes?
Ulleksa [173]
The answer is:1 lap per minute
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3 years ago
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