Find the minimum value of the function:
f(x) = x2 + 9x – 16.

Answers

Answer 1
complete the square by halving the x coefficient and putting that in a squared bracket with x:

(x + 4.5)^2

This will give us an extra 20.25 we don’t want, so takeaway 20.25:

(x + 4.5)^2 — 20.25

Takeaway the 16 in the question:

(x + 4.5)^2 - 20.25 - 16 = (x + 4.5)^2 - 36.25

The minimum x coordinate is the number in the bracket with the opposite sign, thus the answer is -4.5 (the minimum y coordinate is the number outside the bracket with the same sign, -36.25)

Related Questions

Can someone pls help me with problems 4 and 5 pls this is due in a bit and I’m in a rush I’ll give 100 points it’s all I have

Answers

Answer:

Step-by-step explanation:

Answer:

#4

Let M is the midpoint of DE.

Since D is at 8 and DE = 5.

DM = ME = 5/2 = 2.5

Point M is at:

8 + 2.5 = 10.5          if E is to the right of D8 - 2.5 = 5.5            if E is to the left of D#5

Given

XY = 7, YZ = 2x - 1, XZ = 30

Since XZ = XY + YZ, set up an equation and solve for x:

7 + (2x - 1) = 302x + 6 = 302x = 24x = 12#6

The distance from your house to friend's is LN.

We have:

M is midpoint of LN, so LM = MNLM = 3xMN = 2x + 2

Set up an equation, solve for x:

3x = 2x + 23x - 2x = 2x = 2

Find the distance LM:

LM = 3*2 = 6

Find the distance LN:

LN = 2*LM = 2*6 = 12

pat has no more then 20 sweets. she counts her sweets by twos she has one sweet left. then she counts by five. she has 2 left over. how many sweets could she have​

Answers

Answer:

She can either have 7 sweets or 17 sweets.

Step-by-step explanation:

Variable x = number of sweets Pat has

x < 20

Counting by 5's (5, 10, 15) that will result in 2 left over (5 + 2, 10 + 2, and 15 + 2). This leaves 3 possible options as to how many sweets Pat has: 7, 12, and 17.

Counting by 2's (2, 4, 6 . . . 18) that will result in 1 left over (6 + 1, 10 + 1, 16 + 1) This leaves 2 possible options, given the other numbers from counting by 5's were eliminated.: 7 and 17.


Please help me asap

Answers

Umm… sorry to say but the image is black. Please kindly resend it again!

PLEASE HELP I WILL MARK BRAINIEST IF THE ANSWER IS CORRECT!!!!!!!!

6. In triangle ABC, the length of side AB is 12 inches and the length of side BC is 20 inches Which of the following could be the length
of side AC?
A. 6 inches
B. 34 inches
C. 18 inches
D 37 inches

Answers

Answer:

C

Step-by-step explanation:

In this situation the two lowest sides, 12 and 18, add to higher than the longest side.  This is the only answer that does so.

Kenya plans to make a down payment plus monthly payments in order to buy a
motorcycle. At one dealer she would pay $2,250 down and $200 each month. At
another dealer, she would pay $2,850 down and $175 each month. After how
many months would the total amount paid be the same for both dealers? What
would that amount be?
After
months Kenya will have paid $
for the bike at either dealer.

Answers

Answer:

Step-by-step explanation:

2500+150x=3000+125x

150x-125x=3000-2500

25x=500

x=500/25

x=20 mo

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

2500+150*20=3000+125*20

5500=5500 total paid after twenty months

Hope this is helpful

Is (1, 10) a solution to this system of inequalities?
y > X + 9
y > 10

Answers

Answer:

Explanation:

I think the x value is 1

But however I don’t think the solution is (1, 10) because the y value is bigger than as can be seen in one of the equation that is written y > 10 so y can be 11, 12, 13,.....

Answer:

No

Step-by-step explanation:

If (1, 10) is a solution to the system then it must satisfy both inequalities.

Using x = 1 and y = 10 , then

10 > 1 + 9 , that is

10 > 10 ← False

and

10 > 10 ← False

Neither of the inequalities are satisfied by (1, 10)

Thus it is not a solution

Which expression is equivalent to 6 (3.6 + 4)?​

Answers

Answer:

45.6

Step-by-step explanation:

6(3.6 + 4)

6 (7.6)

= 45.6

Andrew bought four bottles of lemonade and two bottles of water for €2.45. From the same shop Michael
bought two bottles of lemonade and four bottles of water for €2.35. What is the total cost of one bottle of
lemonade and one bottle of water?

Answers

Answer:

0.8 euro

Step-by-step explanation:

Suppose the price of bottle of lemonade is x, when the bottle of water costs y.

Four bottles of lemonade cost 4x, two bottles of water cost 2y

4x+2y=2.45

Two bottles of lemonade cost 2x, four bottles of water cost 4y

2x+4y= 2.35

These equations( 4x+2y=2.45 and 2x+4y= 2.35) are simultaneous, so

multiply the first one by -2

-8x-4y=-4.9

-8x-4y+2x+4y= -4.9+2.35

-6x=-2.55

x=0.425 euro - the cost of bottle of lemonade

y=(2.45-4*0.425)/2

y=0.375 euro - the cost of bottle of water

0.425+0.375= 0.8 euro - the total cost  of one bottle of

lemonade and one bottle of water

Answer:

price of lenonade bottle is 0.425

price of water bottle is 0.375

Step-by-step explanation:

In explaination, 'x' is the value of lemonade bottle and 'y' is the value of water bottle.

All explaination is in picture below.

yooo cuhh's is the square root of 64 a rational or irrational . ( and is it natural or a real number

Answers

Answer:

Step-by-step explanation:

It's an integer (which includes the minus number).

It can be a natural number (if the value of an expression comes to +/- 8 and for some reason - 8 is not permitted because it's a length)

It is for certain a real number.

Hey, I need help with solving this inequality. It is for Introductory Algebra (0308) TSI Review. I need to pass the TSI which is 20 to 45 questions long and I have failed it in the past a total of four times, please help me to understand this: -4<4-2x<6


Thanks So Much!

Answers

Hello!

This one is a little tricky, but easy once you split it into a couple of parts!

So you have your whole inequality:

-4<4-2x<6

Let’s break it into two parts right down the middle. This just makes it way easier to solve! Start with -4<4-2x

Now, solve for “x” in that simple inequality. Remember that the inequality acts just like an equal sign, except for when you divide or multiply by a negative number! Then you have to flip it around.

-4<4-2x

Subtract 4 from each side

-8<-2x

Now, divide by -2 on both sides to get x by itself. Remember you are dividing by a negative in this case, so you have to flip the inequality around once you finish!

4>x

You can rewrite that as x<4 (it means the same thing :)

Now, let’s do the other half of this inequality. We’re doing the same thing, just the other side!

4-2x<6

Solve for x! Subtract 4 from each side

-2x<2

Get x by itself by dividing by -2 on both sides. Remember to flip the inequality since it’s negative!

X>-1

Ok! You’ve solved both parts of this, now it’s time to piece it all together.

You know x is less than 4 based on the first step, but greater than negative one based on the second step! Therefore, you write:

-1
I hope this makes sense! If you have any questions, please let me know!

please help me i need help

Answers

83+247
330
Round it to 300 because it is under 350 Which means you do not round up

Find the value of unknown side​

Answers

Answer:

hope this helps you

have a great day

calculate the surface area of a cylinder with diameter 26,5 and height 63,7​

Answers

Answer:

A≈1633.63

Step-by-step explanation:

d Diameter 26

h heigth 7

A=2πd

2h+2π(d

2)2=2·π·26

2·7+2·π·(26

2)2≈1633.62818

Write the conjugate of the following complex
number:
-6i

Answers

Answer:

[tex]6i[/tex]

Step-by-step explanation:

We want to write the conjugate of the complex number:

[tex]-6i[/tex]

Recall that the conjugate of a complex number in the form a + bi is a - bi, and vice versa.

We can rewrite our complex number as:

[tex]\displaystyle 0 - 6i[/tex]

Hence, a = 0 and b = 6.

Then its conjugate will be:

[tex]0 + 6i = 6i[/tex]

Half the difference of a number n and 20 is 30. What is the number?​

Answers

Answer:

80

Step-by-step explanation:

Half the difference of a number n and 20 ⇒  (n - 20)/2... is 30 ⇒ = 30

Solve the equation for n:

(n - 20)/2 = 30n - 20 = 30*2n - 20 = 60n = 60 + 20n = 80

The number is 80

Answer:

Number is 40

Step-by-step explanation:

Let the number be n

(n - 20)/2 = 30

(n - 20) = 2 × 30

n = (2 × 30) + 20

n = 60 + 20

n = 80

(PLEASE HELP ASAP I JUST NEED TO SEE IF I GOT THE RIGHT ANSWER)PLEASE EXPLAIN AS WELL

Answers

the answer is 39. deposited means you add 20 and withdrew means you subtract 17. so 36+20=56 and then 56-17=39

Answer:

MONEY ON MONDAY=36.

MONEY ON TUESDAY =36+20=56

MONEY ON WEDNESDAY =56-19=37

MONEY LEFT ON THURSDAY=37

-a - 2b + 3c for a = 24, b= 7, and c=5

Answers

Answer:

-23

Step-by-step explanation:

Plug in each value for its respective variable.

-(24) - 2(7) + 3(5)

-24 - 14 + 15

= -23

Answer:

-23

Step-by-step explanation:

Plug in each value for its respective variable.

-(24) - 2(7) + 3(5)

The perimeter of a rectangle is 36 feet. The length is 2 feet more than 3 times the width. What are the dimensions of the rectangle?

Answers

Answer:

Step-by-step explanation:

The perimeter (P) of a rectangle is equal to the sum of twice the length and twice the width.

For this problem, let x be the width.

Then because the length is 2 less than 3 times the width

The length is 3x - 2

Therefore, P = 2x + (2)(3x - 2) = 36

Solving this for x gives:

2x + 6x - 4 = 36

8x - 4 = 36

8x = 40

x = 5

Therefore, the width = x = 5 feet

And the length = 3x - 2 = (3)(5) - 2 = 13 feet

See photo for question

Answers

Answer:

66 = ∠JKN

Step-by-step explanation:

∠JKM = 99

∠LKM = 66

KN bisects means middle point divides into two equal parts

so first lets find ∠LKN and ∠NKM

66/2 = ∠LKN and ∠NKM each

33 = ∠LKN

33 = ∠NKM

so if we add ∠JKL + ∠LKN + ∠NKM = 99

∠JKL + ∠LKN + ∠NKM = 99

∠JKL + 33 + 33 = 99

∠JKL  + 66  = 99

∠JKL = 99-66

∠JKL = 33

now to find ∠JKN we must add

∠JKL + ∠LKN = ∠JKN

33 + 33 = ∠JKN

66 = ∠JKN

Divide. Write your answer as a decimal.

−3.45÷(−15)=

Answers

0.23 is the answer, hope this helps.

Find the perimeter, in units, of the polygon with the given vertices. Plot the points.
Round to the nearest tenth.
5. A(8,0), B(-3, 2), C(10, 2)
6. A(4, -3), B(7, 10), C(-8, 2)
7. A(-5,5), B(5, -5), C(-5, -5)
8. A(4, -3), B(7,10), C(-8, 2), D(-1, -5)
9. A(-4, -8), B(4, -8), C(4, 0), D(0, 3), E(-4, 0)

Answers

Answer: 9

Step-by-step explanation:

Plot the points

Find the distance of each side

add the three numbers

9

Answer:

5. 27

6. 43

7. 47

Step-by-step explanation:

Can someone solve/walk me through this problem please?
-6x+5y=34
-6x-10y=4

Answers

Answer: x = -4

               y = 2

Step-by-step explanation:

From equation I

-6x + 5y = 34

-6x = 34-5y

-(-6x) = -(34-5y)

or, 6x = 5y-34

or, x = 5y-34/6

so

substituting the value in equation II

-6x-10y = 4

or, -6{(5y-34)/6} - 10y = 4

or, -(5y-34)-10y = 4

or, -5y + 34-10y = 4

or, -15y = -30

or, y = -30/(-15)

so, y = 30/15

so, y = 2

now

x = (5y-34)/6

   = (5*2-34)/6

   = (10-34)/6

     = -24/6

     = -4

Answer:

x=-4, y=2

Step-by-step explanation:

-6x-10y=4

-6x=4+10y

(4+10y)+5y=34

15y=30

y=2

-6x-10(2)=4

-6x=24

x=-4

f(x) = [tex]2^{x}[/tex] - 2 and g is a horizontally scaled function of f. The functions are graphed where f is solid and g is dashed. What is the equation of g?
A. g(x) = [tex]2^{3x}[/tex] - 2
B. g(x) = [tex]2^{\frac{1}{3}x }[/tex] - 2
C. g(x) = [tex]2^{2x} - 2[/tex]
D. g(x) = [tex]2^{\frac{1}{2}x} - 2[/tex]

Answers

Answer: D) g(x)= 2^1/2x -2

Step-by-step explanation:

write each expression as a single power of 10

Answers

Answer:

10 to the power of 4

Step-by-step explanation:

[tex](10^{5} )^{2} \\= 10^{10} \\\\(10^{2})^3\\= 10^(6)\\\\[/tex]

You then subtract the powers since you are dividing by the same base exponent of 10.

10 - 6 = 4

10^4

hey please help i’ll give brain

Answers

Answer:

First, the dropdown is 9. Second, put in 9. The answer is 81.

Step-by-step explanation:

10* what equals 90? Well, let's do 90/10, our answer is 9. Then We are given 1 nine or 9 to put on the second slot. Our answer would be 90-9, or 81. Khan Academy is teaching you how to multiply.

Answer:

[tex]9 \times 9 = 10nines - 1nine \\ 9 \times 9 = 90 - 9 \\ 9 \times 9 = 81 \\ than \: you[/tex]

Find the line segment

Answers

Answer:

[tex]l \: is \: mid \: point \: here \: so \\ 9x - 16 = 7x + 10 \\ x \: terms \: togather \\ 9x - 7x = 10 + 16 \\ 2x = 26 \\ x = \frac{26}{2} \\ x = 13 \\ option \: (3) \\ thank \: you[/tex]

cos a/4= -1/4
cos a= ??

Answers

Answer:

cos a / 4 = -1/4

--->cos a =- 1          

         

                                                                 

PLEASE HELP :( WORTH 20 PIONTS I WILL MARK BRAINLIEST please answer honestly :)
here is the table of values for y = f(x)

x -2 , -1 , 0, 1, 2 , 3, 4 , 5, 6
f(x) 5, 6, 7, 8, 9, 10, 11, 12, 13
mark the statements that are true
A. f (-1) =6
B. f (5) = - 2
C. The domain for (x) is the set (-2, -1, 0, 1 , 2, 3, 4, 5, 6
D. the range for f(x) is all real numbers

Answers

Answer:

A and C

Step-by-step explanation:

A

From the table the value of f(x) when x = - 1 is 6

Thus f(- 1) = 6 ← is true

B

From the table the value of f(x) when x = 5 is 12

Thus f(5) = - 2 ← is false

C

The domain is the values of x from the table ( the input values )

domain is { - 2, - 1, 0, 1, 2, 3, 4, 5, 6 } ← is true

D

The range is the values of f(x) from the table ( the output values

range is { 5, 6, 7, 8, 9, 10, 11, 12, 13 }

The range for f(x) is all real values ← is false

0

Which of the following describes a linear function?
A. 3(x + 2y) - 4 = x + 5y
B. ax2 + bx + c = 0
c. (a + b)?
D. A = ?

Answers

Answer:

A

Step-by-step explanation:

Linear equation involves two variables with the power of 1. B is quadratic equation

C and D are not even equations

A bc it's the most reasonable

Max spent $53 and now has no money left .He had $ before his purchase

Answers

Answer:

$53

Step-by-step explanation:

If he spent $53 and has nothing left then that's all he must've have had right? If he had more then he would have money leftover after his purchase.

Best of Luck!

He had $53 before his purchase
Other Questions
Write a report on a talk given recently to the school by an outsider PLEASE HELP MARK BRAINLIESTS!!!! add 8+5think of a number path start at 8 add 2 to make 10 Here is a circle, centre O, and the tangent to the circle at the point (-3, 4) on the circle. P (-3, 4) X -5 O O Find an equation of the tangent at the point P. Give your answer in the form y = ax + b where a and b are both fractions with denominator 4. The more acidic a solution is, the higher the pH will be. True False Urgent need help 1.20 What a isProper noun The outer boundary of cells; controls the entry and exit of substances Ankit's father is five years older than three times of Ankit's age. 50 years old, then calculate the present age of Ankit When this 3-digit number is rounded to the nearest hundred it rounds down to 600. The digit in the ones place is the third odd number that you count beginning with 1. The sum of the digits is 13. What is the number? Read the passage carefully. Choose a connection toanother text a reader could make to the passage.O This reminds me of reading and analyzing theConstitution in civics class.O This reminds me of how mundane everyday lifesometimes feels to me.This reminds me of an article about how people arereluctant to analyze their own ideas.This reminds me of the decline of manners inAmerican Society over time. What is the basic unit of structure and function of all living organisms?O mitochondrionODNAnucleuscell Given f(x) = x ^ 2 + 2x and g(x) = x - 1 , find (fg)(x)A) x^3 + 2x^2B) x^3 + x^2 + 2xC) x^3 - x^2 - 2xD) x^3 + x^2 - 2x Lilly drove her car east for a total of 6 hours at a constant velocity. In one-third of that time, she drove 160 kilometers. What was her velocity?Write your answer as a whole number. write the pronoun wordwho are those students? what ______are doing? which part of a flower has pollen grain? Given function g(x)=-x + 2x, determine value of the function for g(-3). Help me solve this pleasee Jimmy's dog weighed 60 pounds 4 months ago. Since then his weight has increased by 6% How much does Jimmy's dog weigh now Write an email (60-100 words) :You would like to borrow a book from your Australian friend Charlie. -Tell Charlie which book you would like to borrow -Explain why you need to borrow this book -Say how long you need the book for