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hichkok12 [17]
3 years ago
9

How to find excluded values ?

Mathematics
1 answer:
Inessa [10]3 years ago
5 0
Hello,

The method is to find the roots of the denominator.

x²-2x-15=x²+3x-5x-15=x(x+3)-5(x+3)=(x+3)(x-5)

Roots are x=-3 and x=5

Answer C
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Which of the following inequalities represent the number line below?
MrRissso [65]

Answer:

greater than or equal to 250

x < or = 250

Step-by-step explanation:

hopefully this helps

6 0
3 years ago
sharia has a full time job and earns 475$ each week but she starts looking for ways to increase her weekly earnings . sharia fin
Arlecino [84]

Answer:

12 hours

Step-by-step explanation:

Full time job:

Earning per week = $475

Part time job :

Earning per hour = $11

Number of working hours per week at per time job to increase weekly earning to atleast $600 ;

Let number of hours = h

Full time earning + earning per hour * (number of hours) ≥ 600

$475 + ($11 * h) ≥ 600

$475 + $11h ≥ 600

11h ≥ 600 - 475

11h ≥ 125

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Hence, sharia will need to work for 12 hours per week

5 0
3 years ago
What was Zane's unit rate, in words per minute, on each test?
AfilCa [17]

Answer:

Test A: 40 words per minute

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Test C: 44 words per minute

<em><u>Test B has the highest unit rate</u></em>

Step-by-step explanation:

Test A divide 30 by \frac{3}{4} (30/0.75=40)

Test B divide 78 by 1\frac{1}{2} (78/1.5=52)

Test C divide 99 by 2\frac{1}{4} (99/2.25=44)

<u>Hope this helps :-)</u>

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4 0
2 years ago
find the number of positive integers not exceeding 100 that are either odd or the square of an integer.
Ivenika [448]

Answer:

55

Step-by-step explanation:

50 odd numbers and 3 even square numbers

3 0
1 year ago
25. Find the area of the trapezoid. Leave your answer in simplest radical form. The figure is not drawn to scale.
n200080 [17]

Answer:

Option D. 44\ cm^{2}

Step-by-step explanation:

we know that

The area of a trapezoid is equal to

A=\frac{1}{2}[b1+b2]h

we have

b1=8\ cm

b2=(4+8+2)=14\ cm

h=4\ cm

substitute the values

A=\frac{1}{2}[8+14](4)=44\ cm^{2}

6 0
3 years ago
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