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3 years ago

How To work this out ?

Mathematics

1 answer:

MrMuchimi3 years ago

6 0

(a) Using the completing the square method, we need to write into the form of where , so
Expand to find the value of c
Notice that we get back the first two terms, the and the .We need to get rid of the last term of '9' as the term was not in the original form. The final form will look like
Hence,
(b)
(c) , square root both sides plus and minus of 2 Hence

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Ben has a cell phone plan that provides 200 free minutes each month for a

user100 [1]

Answer:

The piecewise functions accurately represents charges based on Ben's cell phone plan is :

$f(x)= 39, x \leq 200\\f(x)=39 + 0.35(x - 200), x > 200}$

Step-by-step explanation:

Let x be the minutes over cell phone

Let f(x) represents the piecewise function that represents the charges based on Ben's cell phone plan.

We are given that Ben has a cell phone plan that provides 200 free minutes each month for a flat rate of $39.

So, $f(x)= 39, x \leq 200$

We are also given that For any minutes over 200, Ben is charged $0.35 per minute.

So, Minutes over 200 = x-200

$f(x)=39 + 0.35(x - 200), x > 200}$

Hence the piecewise functions accurately represents charges based on Ben's cell phone plan is :

$f(x)= 39, x \leq 200\\f(x)=39 + 0.35(x - 200), x > 200}$

3 0

3 years ago

What is the value of the 3 in parenthases [3]45,423,912

oee [108]

Answer:

300,000,000

Step-by-step explanation:

change everything after the 3 to a zero, hope this is the answer you are looking for

7 0

3 years ago

Simplify by dividing [ -3/-8] divided by 5/9 (5 points)

rewona [7]

Answer: D

Step-by-step explanation:

(3/8) / (5/9) is the same as multiplying (3/8) by (9/5) which is 27/40. I'm not sure if there's an error between C and D because those are both the same answer since dividing a negative number by a negative number gives you a positive number.

I think C was supposed to be -27/40 so D is the correct answer since it's positive.

3 0

3 years ago

Are the expressions 12a + (6+3a) and 3(5a + 2) equivalent show your work and explain

bezimeni [28]

12a + 6 + 3a = 15a + 2
15a = 15a - 4
0 = - 4

8 0

3 years ago

Read 2 more answers

What is the value of x in the equation −6 + x = −2? (5 points) a 8 b 4 c −4 d −8

Ymorist [56]

The correct answer is B)4

5 0

3 years ago