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rosijanka [135]
3 years ago
8

Find the values of k that make 2x^2 + kx + 5 factorable.. . A.. 1 or 10. . B.. 2 or 5. . C.. 7 or 11. . D.. 1 or 5

Mathematics
2 answers:
Damm [24]3 years ago
4 0
Test them
1 doesn't work, so cross out A and D
2 doesn't work cross out B
answer is C

andreev551 [17]3 years ago
4 0
The third term of the quadratic equation, also called the constant, is the product of the roots of the equations. Among the choices, only letter D. 1 or 5, will give a product of 5. All the rest of the choices do not satisfy the condition. 
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Katrina earns $12.25 per hour plus a 21% commission on any sales she makes. In one day, she worked for 11 hours, and she made $4
Effectus [21]

Answer:

B

Step-by-step explanation:

12.25 times 11 is 134.75

488 times 0.21 is 102.48

134.75 plus 102.48 equals 237.23

237.23 is closest to 232 which is B.

6 0
3 years ago
Rashida owns a bike rental company. She charges an initial fee of $10 for each rental and an hourly rate of $4. A customer paid
NeX [460]

Options were not present in the question we are Stating below;

Rashida owns a bike rental company. She charges an initial fee of $10 for each rental and an hourly rate of $4. A customer paid $34 for a bike rental. Which of the equations below could be used to find how many hours, x, the customer rented the bike?

34 = 10 - 4x\\\\34 = 4 + 10x\\\\34 = 10 + 4x\\

Answer:

34 = 10 + 4x

Step-by-step explanation:

Given:

Amount customer paid = $34

Initial fee = $10

Hourly rate = $4

We need to write the equation used to find how many hours, x, the customer rented the bike.

Solution:

Let the number of hours customer rented the bike be 'x'.

Now we can say that;

Amount customer paid is equal to sum of Initial fee plus Hourly rate multiplied by number of hours customer rented the bike.

framing in equation form we get;

34 =10+4x

Hence The equation used to find number of hours customer rented the bike is 34 =10+4x.

6 0
3 years ago
2.<br> Which of the functions below is an inverse of the quadratic function f(x) = x2 - 3 ?
mezya [45]

Answer:

the inverse of the quadratic function f(x) = x^2 - 3  is \mathbf{f^{-1}(x)=\pm \sqrt{x+3}}

Step-by-step explanation:

We need to find inverse of the quadratic function f(x) = x^2 - 3

Let

y=x^2-3

Replace x and y

x=y^2-3

Now, we will solve for y

Adding 3 on both sides

x+3=y^2-3+3

x+3=y^2

Taking square root on both sides

\sqrt{y^2}=\sqrt{x+3}\\y=\pm \sqrt{x+3}

Now replace y with f^{-1}(x)

f^{-1}(x)=\pm \sqrt{x+3}

So, the inverse of the quadratic function f(x) = x^2 - 3  is \mathbf{f^{-1}(x)=\pm \sqrt{x+3}}

3 0
3 years ago
Sam drives 155 miles in 2 1/2 hours.At that same rate, how far would Same drive in 4 hours?
11111nata11111 [884]
155/(2 1/2)=62
Sam drives at 62 m/h
62*4=248
Sam would drive 248 miles in 4 hours.

Hope this helps :)
3 0
3 years ago
Read 2 more answers
Which three of the objects shown below could we slice to create circle cross-sections?
Aloiza [94]

Answer:

The sphere

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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