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nalin [4]
3 years ago
6

Which values of c will cause the quadratic equation -- x2 + 3x + c = 0 to have no real number solutions? Check all that

Mathematics
1 answer:
Novay_Z [31]3 years ago
6 0

Answer:

c=5x

Step-by-step explanation:

:D good luck

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When looking at the rational function f of x equals the quantity x minus one times the quantity x plus two times the quantity x
Luba_88 [7]

As per the given question, the expression of the function f(x) is as:

f(x)=\frac{(x-1)(x+2)(x+4)}{(x+1)(x-2)(x-4)}

Now, as per the definition of zeros, the zero is that value of x which when plugged into the function should make the function zero (it is also called "making the function vanish"). <u>In our case, plugging in "zero values" of x should make the numerator zero without making the denominator zero.</u> Now, if we plug in the given values of x, which are x=-1, x=2 and x=4 in the function we see that the <u>numerator does not become a zero but the denominator does</u>.

Thus, x=-1, x=2 and x=4 are not the zeros of the function and therefore, Sue is wrong. However, we do have discontinuities at the aforementioned values of x because the denominator becomes a zero at those points and as per the definition of a discontinuity the denominator should be a zero at that point. Therefore, Ed is correct.

8 0
4 years ago
What is 5C3?<br> A. 35<br> B. 10<br> C. 14<br> D. 28
galben [10]

Answer: B. 10

-5C3 or 5 choose 3 refers to how many combinations are possible from 5 items, taken 3 at a time. To calculate combinations, we will use the formula nCr = n! / r! ... * (n - r)!, where n represents the total number of items, and r represents the number of items being chosen at a time.

-10 is the total number of all possible combinations for choosing 3 elements at a time from 5 distinct elements without considering the order of elements in statistics & probability surveys or experiments. The number of combinations for sample space 5 CHOOSE 3 can also be written as 5C3 in the format of nCr or nCk.

Step-by-step explanation: Hope this help :D

5 0
3 years ago
Read 2 more answers
Work the following pricing problems for services rendered. (For all calculations use hundredths.)
gayaneshka [121]
Labor time = 4 1/2 hours = 4.5 hours
overhead rate = 95% - mostly dependent on labor
retail price of parts = 134.75
total cost of job = 241.98

241.98 - 134.75 = 107.23
107.25 / (4.5 x 1.95) = 107.25 / 8.78 = 12.22 hourly rate

labor : 12.22 x 4.5          =   54.99
overhead: 54.99 x 95%  =   52.24
retail price of parts         = <u>134.75</u>
total cost of job:                 241.98
8 0
3 years ago
Read 2 more answers
Both angle A &amp; B are supplementary. If angle A is x and angle B is 3x, then what is x equal to AND what does angle B equal?
ryzh [129]

Answer:

A= 45 degrees

And angle B= = 135 degrees

Step-by-step explanation:

Supplementary means that the sum of both angles is equal to 180 degrees.

< A= x

< B= 3x

<a+<B= 180

x+3x= 180

4x= 180

x= 180/4

x= 45

Therefore angle A= 45 degrees

And angle B= 3x= 3*45= 135 degrees

7 0
3 years ago
Find the common difference of the arithmetic sequence ?
Feliz [49]
Note:  25-7=18, 18-7=11, 11-7=4, and so on.  Thus, -7 is the common difference.
5 0
3 years ago
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