2 years ago

Which of the following is the maximum value of the equation y = −x2 − x + 6?

Mathematics

1 answer:

Ratling [72]2 years ago

4 0

Step-by-step explanation:

f(x) = y= -x²-x+6

When y is max, f'(x) = 0

f'(x) = -2x-1

Equating to 0,

-2x-1= 0

x= -1/2

Put the value of x in f(x)

y = -(-1/2)² -(-1/2) +6

= -1/4+1/2+6

= 6+1/2

y= 13/2

You might be interested in

HELP PLEASE!!! I WILL FIVE STAR!!

ivann1987 [24]

Answer:

Step-by-step explanation:

You can't answer c. There is not enough information. Other than there are 14 boys that went, you know nothing about how many went.

Girls going = (3/5) * 20 = 12

Girls not going = 20 - 12 = 8

4 0

4 years ago

Is 4 3/4 bigger or smaller or equal to 38/12 ?

Fed [463]

4 3/4 =19/4=57/12
57/12 is larger than 38/12

8 0

3 years ago

Read 2 more answers

One of the following inequalities is graphed below in the

dem82 [27]

Answer:

I cant click on the link :)

Step-by-step explanation:

6 0

3 years ago

Find the surface area of the following cylinders. Round to the nearest hundredth.

Aleks [24]

Answer:

surface area of cylinder= 2πrh + 2πr²

2×22/7×1×8+2×22/7×1×1

352. + 44

7. 7

= 50.3 + 6.25

= 56.55cm²

5 0

4 years ago

Abby Mia wants to know how much must be deposited in her local bank today so that she will receive yearly payments of $18,000 fo

aev [14]

It's annuity problem
To solve your question use the formula of the present value of annuity ordinary which is
Pv=pmt [(1-(1+r)^(-n))÷r]
Pv present value?
PMT yearly payments 18000
R interest rate 0.09
N time 20 years
So
Pv=18,000×((1−(1+0.09)^(−20))÷(0.09))
pv=164,313.82

4 0

4 years ago