find the maximum value of the function
[tex] - 8 + 2x - 4x ^{2} [/tex]

Answers

Answer 1

Answer:

x = [tex]\frac{-b}{2a}[/tex]

Step-by-step explanation:

Start by using P.E.M.D.A.S.

-8 is a 2x is b and -4[tex]x^{2}[/tex] is c.


Related Questions

Solve for y: y/3=h.

Answers

Answer:

y= 3h

Step-by-step explanation:

make y the subject of the formular

Determine if JK and LM are parallel, perpendicular, or neither: J(13,-5), K(2,6), L(-1,-5), M(-4,-2)

Answers

Answer:

Parallel

Step-by-step explanation:

mjk=-1

mlm=-1

BRAINLIEST ANSWER!! please help

Answers

Answer:

k=45

Step-by-step explanation:

Since the sum of the measures are 180 and the measures are 45 degrees, k degrees, and 2k degrees, we can conclude that [tex]45+2k+k=180[/tex]. 2k and k are like terms, so you can add 2k and k to get 3k.Then, you would have  [tex]45+3k=180[/tex]. Since you are finding k, you want to isolate k as best you can. To do this, you subtract 45 on both sides [tex]45-45+3k=180 -45 \\3k=135[/tex] as shown by the equation, 180-45 is 135. Then, you divide 3 on both sides to get k=45.

OMG I need halp and this is 8th grade math can someone help me I would really appreiate it.☺

Answers

Answer:

Eliana saves at a greater rate because her unit rate of $42 per week is greater than Lana's unit rate of $40 per week

hope this helps =3

sorry if im wrong

Solve the equation.
3/2y - 5 = -2

Answers

Answer:

y= 1/2 is the answer.

Step-by-step explanation:

Answer:

y = 2

Step-by-step explanation:

find the slope
!! help pls

Answers

Answer: 3

Step-by-step explanation:

Answer:

Rise 3

Run 1

Step-by-step explanation:

Are the two statements equivalent?
The ratio of boys to girls is 3 to 4
The ratio of girls to boys is 4 to 3

Answers

[tex]Ihopethishelps[/tex]

Answer:

Yes

Step-by-step explanation:

boys to girls is  3 to 4 or 3:4

girls to boys is 4 to 3 or 4:3

-------------------------------------------------------------------

The genders are mixed up but the ratios are the SAME or EQUIVALENT.

-------------------------------------------------------------------

boys 3

girls 4

[tex]hopefullythishelpsyou[/tex]

[tex]enjoyyourday[/tex]

Is 1.43 grater than, less than, or equal to 1.043?
1.43 1.043?
1.43=1.043?

Please help!

Answers

Answer:

greater than

Step-by-step explanation:

Perform the indicated operation.
1 ⅔ + 5 ⅜​

Answers

Answer:

169/24 or 7 1/24

Step-by-step explanation:

A diver ascended 9/10 of a meter in 1/10 of a minute. What was the diver r
ate of ascent

Answers

Rate = distance / time.

Distance= 9/10

Time = 1/10

Rate = 9/10 divided by 1/10 which is 9.

9 meters per second.

540 meters per minute.

find x and measure ABC
pls help I’ve been trying this for 30 minutes.
Geometry

Answers

[tex](2x - 9) + (3x - 6) = 110[/tex]

[tex]2x + 3x - 9 - 6 = 110[/tex]

[tex]5x - 15 = 110[/tex]

Plus sides 15

[tex]5x - 15 + 15 = 110 + 15[/tex]

[tex]5x = 125[/tex]

Divided sides by 5

[tex] \frac{5}{5}x = \frac{125}{5} \\ [/tex]

[tex]x = 25[/tex]

Thus ;

A = 2 ( 25 ) - 9°

A = 50° - 9°

A = 41°

_________________________________

B = 3 ( 25 ) - 6

B = 75° - 6°

B = 69°

_________________________________

C + 110° = 180°

because it is a straight line.

Subtract sides 110°

C + 110° - 110° = 180° - 110°

C = 70°

_________________________________

And we're done.....♥️♥️♥️♥️♥️

A boat travels upstream on the Mississippi river for 3.5 hours. The return trip only takes 2.5 hours because the boat travels 2 miles per hour faster downstream due to the current. How far does the boat travel upstream? Which is the best equation to use?

Answers

Answer:

17.5 miles per hour

Step-by-step explanation:

A boat travels upstream on a Mississippi river for 3.5 hours

The return trip takes 2.5 hours

The boat travels 2 miles per hour faster downstream

Let y represent the speed that was travelled upsteam

3.5y = 2.5(y + 2)

3.5y = 2.5y + 5

3.5y - 2.5y = 5

y = 5

Therefore the distance travelled by the boat upstream can be calculated as follows

= 3.5 × 5

= 17.5 miles per hour

Find the measure of A if Bis 38 100° B. A​

Answers

is there a diagram so i can actually answer the question?
Idk try to look u will find it

Write an equivalent expression for (3m - 6)(8m2 - 40m - 5).​

Answers

Answer:

24m3−168m2+225m+30

Step-by-step explanation:

(3m+−6)(8m2+−40m+−5)

=(3m)(8m2)+(3m)(−40m)+(3m)(−5)+(−6)(8m2)+(−6)(−40m)+(−6)(−5)

=24m3−120m2−15m−48m2+240m+30

=24m3−168m2+225m+30

Simplify. - (2b - 4)
Show work

PLEASE HELP

Answers

Answer:

-2b+4

Step-by-step explanation:

we are multiplying by a negative 1 in the expression.

-1(2b-4)

-2b+4

*negative multiplied by a negative makes a positive

Hope this helps!

Write the inverse function,
f^-1 (x), for the function
f (x) = 1/3x-4

Answers

[tex]f(x) = \frac{1}{3}x - 4 \\ [/tex]

[tex]y = \frac{1}{3}x - 4 \\ [/tex]

Subtract the sides of the equation plus 4

[tex]y + 4 = \frac{1}{3}x \\ [/tex]

Multiply the sides of the equation by 3

[tex]3(y + 4) = x[/tex]

[tex]3y + 12 = x[/tex]

So ;

[tex] {f}^{ - 1}(x) = 3x + 12 [/tex]

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

A ratio is a comparison of ____ numbers or measurements

Answers

Answer:

the answer is: "a ratio is a comparison of two numbers or measurements

What is the diameter of this circle? 7.5 in. A. 3.75 in. B. 7.5 in. C. 15 in. D. 22.5​

Answers

Answer:

B.) 7.5

Step-by-step explanation:

I'm guessing that 7.5 is the radius. If so, the diameter is 15 in. because 7.5 + 7.5 = 15. The radius is half of the diameter.

Please answer correctly.
Will give the brainliest!
Urgent!!!​

Answers

Answer:

11: 12/18 12: 4/16 13: A: 2/8 B: 6/8 C: 2/8

Step-by-step explanation:

Im pretty sure those are

I NEED HELP ASAPPPP mŁABC = 117° → Find
mZCBD
D
C

Answers

Answer:

117-40=77

Step-by-step explanation:

Subtract 40 from 117 to get the answer

Hey! This is due today and I’m lowkey not having a good brain day, could you help?

Answers

1,7
2,10
3,5
4,7
5,7 and for the second question the answer is 5 students

Translate the problem to number "six times a number minus one is equal to eleven"

Answers

Answer:

The answer is 6x-1=11

The weight of a blue whale

Answers

Answer:

About 110,000 – 330,000 lbs.

Step-by-step explanation:

Your Welcome :)

Answer:

110,000 – 330,000 lbs

Step-by-step explanation:

I GOT CHU

7. Ryan has $3.00 worth of coins in his coin jar. If the jar contains 16 coins and all of the coins in the jar
are either nickels or quarters. How many quarters does he have?

Answers

Answer:

pretty sure he has 5 quarters

Step-by-step explanation:

16 divided by 3 = 5

5 quarters because 16 divided by 3 equals 6

Multiple Choice

Find each quotient.
one fourth divided by three eighths
A. one-third
B. two-thirds
C. start fraction 3 over 4 end fraction
D. three-eighths

Answers

Answer:
B
Step-by-step explication:
(1/4)/(3/8)=(2/3)

Answer:

B

Step-by-step explanation:

Bob and his fish friends have been noticing these weird silver things hanging out the in the water lately. They have also noticed that some of their friends seem to be disappearing. Bob wonders if the two are related. Their school of fish started with 450 fish in it but now they only have 360 fish in their school. By what percentage was the population of their school of fish reduced?

Answers

Answer:

450

Step-by-step explanation:

subtract

Answer:

I am pretty sure 25%

Step-by-step explanation:

I had this question before

What is the domain of the function f(x) = 3x + 4 + 1?
all real numbers
O all real numbers less than or equal to -4
O all real numbers greater than or equal to 1
O all real numbers greater than or equal to -4

Answers

Answer:

c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

HURRY PLEASE ANSWER)))
An internet service provider is implementing a new program based on the number of connected devices in each household. Currently, customers are charged a flat rate of $175 per month. The new plan would charge a flat rate of $94 plus an additional $4.50 per device connected to the network. Find the number of devices, x, for which the cost of the new plan is less than the cost of the current plan.

Answers

Answer:

x<18

Step-by-step explanation:

Write the quadratic equation whose roots are 1 and 5, and whose leading coefficient is 2.

Answers

Answer:

[tex]\Large \boxed{\sf \bf 2x^2-12x+10}[/tex]

Step-by-step explanation:

Hello,

As 1 and 5 are roots we can write, with a real number, the quadratic equation as

a(x-1)(x-5)

and as the leading coefficient is 2 then a = 2

It comes

[tex]2(x-1)(x-5)=2(x^2-6x+5)=2x^2-12x+10[/tex]

Thanks

The quadratic equation will be 2x²-12x+1=0.

What is a quadratic equation?

Quadratic equation is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.

Given that the roots of the quadratic equation are 1 and 5 and the leading coefficient is 2.

The equation will be written as,

Quadratic equation = 2( x - 1 ) ( x - 1 )

Quadratic equation = 2 ( x² + 4x - 5)

Quadratic equation  = 2x² + 8x - 10

Therefore, the quadratic equation will be 2x²-12x+1=0.

To know more about quadratic equations follow

https://brainly.com/question/1214333

#SPJ2

BRAINLIEST ANSWER!! NEED HELP ASAP!

Answers

Answer:

1. 30(8.75) + 11t = 400

2. 12.5 hours

Step-by-step explanation:

1. What is given is you work for 30 hours per week at a gas station for $8.75 an hour. You also work as a landscaper for $11 an hour. You want to a make a total of $400 per week.

30 hours and $8.75 an hour would be equivalent to 30(8.75)

We don’t know how many hours you work as a landscaper but you earn $11 an hour, which is equivalent to 11t

Finally, you want to earn a total of $400 a week, which means the sum equals 400

30(8.75) + 11t = 400

2. 30(8.75) = 262.5

400 - 262.5 = 137.5

137.5 / 11 = 12.5

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