Mathematics High School

which of the following quadratic will have a maximum value at x=3
(A) y=x^2-6x+19
(B) y=-4x^2+24x-21
(C) y=-2x^2+20x-49
(D) y=2x^2-3x+7

Answers

Answer 1

The x = 3 the quadratic equation D) y = 2x² -3x +7 will have maximum value.

The maximum and minimum values of a function:

The maximum and minimum values are the highest and lowest values that a function can reach over a particular domain.

For example, in a quadratic function, the maximum or minimum value is the highest or lowest point on the graph, respectively.

If a function has a maximum value, it means that the function reaches its highest point at a certain value of x.

On the other hand, if a function has a minimum value, it means that the function reaches its lowest point at a certain value of x.

Here we have

(A) y = x²-6x +19  

At x = 3

y = (3)² - 6(3) + 19  

= 9 - 18 + 19 = 10

(B) y = -4x²+24x -21

At x = 3

y = -4 (3)² + 24(3) - 21

= - 4(9) + 72 - 21

= 15

(C) y= -2x² +20x -49

At x = 3

y = - 2 (3)² + 20(3) - 49

= - 18 + 60 - 49

= - 7

(D) y = 2x² -3x +7    

At x = 3

y = 2(3)³ - 3(3) + 7

= 18 - 9 + 7

= 16

Therefore,

The x = 3 the quadratic equation D) y = 2x² -3x +7 will have maximum value.

Learn more about Maximum and minimum values at

https://brainly.com/question/29004504

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Answers

Answer:

Step-by-step explanation:

A paperweight in the shape of a rectangular prism is shown: A right rectangular prism is shown with length 10 cm, width 4 cm, and height 4 cm. If a cross section of the paperweight is cut diagonal to the base, which shape describes the cross section?

Answers

Answer:

Square

Step-by-step explanation:

CHECK THE ATTACHMENT FOR THE FIQURE OF THE QUESTION

✓We were given the dimension of the rectangular prism as 10cm × 4cm × 4cm,

✓The cross section of the paperweight can be cut into half to it's base. Then the new dimension will be 4cm × 4cm which is a quadrilateral.

✓ Then width= 4cm, and height=4 cm are of the same values, hence the shape it forms is a SQUARE. and also the their angles is 90° each.

(Equivalent Expressions) Which expression is equivalent to 3 + 2x + 6y + 6x + 2 – 2y?

Answers

5+8x+6y-2y. i got that by adding like numbers/variables

Map Proportionality: You have a map where Indy and Fort Wayne are 19 centimeter apart. Kokomo and Indy are 9.5 cm apart on the map. If you know that Indy and Fort Wayne are actually 120 miles apart, how far apart would Indy and Kokomo be in real life? Express your answer rounded to the nearest tenth of

Answers

Answer: 60 miles

Step-by-step explanation:

On a map, Indy and Fort Wayne are 19 centimeter apart while Kokomo and Indy are 9.5 cm apart on the map.

In real life, Indy and Fort Wayne are actually 120 miles apart, the distance between Indy and Kokomo in real life would then be:

= 9.5 × 120/19

= 120/2

= 60 miles

Indy and Kokomo are 60 miles apart in real life.

Which of these is the smallest and largest number?

Answers

Answer:

a) A -> 7.51

b) C -> 1.21

Step-by-step explanation:

First, you compare the units digits of the nos., then you compare the tenths place digits, then the hundreths place digits, and so on.

a) A -> 7.51

b) C -> 1.21

Hope it helps :)

Please mark my answer as the brainliest


PLEASE HELP!!
The choices are...

A) 4
B) 3
C) 2
D) 1

Answers

Answer:

C) 2

Step-by-step explanation:

The points from the second line are 2 times the amount of the coordinates of the first line

SOMEONE HELP ME PLEASE. What is the missing number in the synthetic-division array?
-1
3
-1
-4
-3
-7
2
7
9
3
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Answers

Your answer should be 1 I’m sorry if this is incorrect and if it’s right pls leave Barinliest trying to rank up

Answer:

-9

Step-by-step explanatio

Is (2,-1) a solution of 2x-y=5? Explain and solve please and thank you.

Answers

Answer:

YES

Step-by-step explanation:

2x-y=5

2(2)-(-1)=5

4-(-1)=5

4+1=5

5=5

Answer:

first replece x and y , 2(2)-(-1)=5

4 +1=5 correct

Step-by-step explanation:

A customer wants to tip 25% on a restaurant bill that is $55. What will be the tip that should be left?

Answers

Answer:

$13.75 as the tip

Step-by-step explanation:

25% of 55$ = $13.75

Write an equation that has a slope of ½ and a y-intercept of -6.

Answers

Answer: y=1/2x-6

Step-by-step explanation:

Answer:

y=1/2x + -6

Step-by-step explanation:

its just the y = mx + b forulma but you just plug in the numbers

Hope this helps :)

Need Help Due Tomorrow

MUST SHOW WORK!
don’t bother answering if not going to show work

Answers

Step-by-step explanation:

If D8=127

Therefore D4 =D8 (because corrosponding angles (forming 'F')

Therefore, the D4=D1(because vertically opposite angle)

There fore D4+D1

i. e 127+127 =254

The option (A) is the correct one

PLZZ GIVE ME BRAINLIEST TAG

THANK YOU........

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For each value of x, determine whether it is a solution to 5x>/40.
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11: yes or no
4: yes or no
10: yes or no

Answers

Answer:

no

yes

no

yes

Step-by-step explanation:

Factor the quadratic 27x2-3
(x2 is X squared) please help.

Answers

Answer:

3(3x-1)(3x+1)

Step-by-step explanation:

27x²-3

You can factor out a 3

3(9x²-1)

Now we can use the difference of perfect squares formula

x²-y²=(x+y)(x-y) which means that 9x²-1=

(3x-1)(3x+1)

put it all together and get

3(3x-1)(3x+1)

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Answers

Answer:

All the dots need to be on the line, and maybe dont add so many dots

Step-by-step explanation:

You need to have an equal amount of dots on each side since it is a scatter line.

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Answers

Answer:

A. (3,2) . I recommend using desmos to find the coordinates

9514 1404 393

Answer:

  A.  (3, 2)

Step-by-step explanation:

The midpoints of the diagonals are the same point, so you have ...

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  A +C = B +D . . . . . . . multiply by 2

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shopkeeper sells tins of the same dog food in packs of four or packs of six.

Packs of four tins cost £1. Packs of six tins cost £1.20

Which is the best value for money?
You must show your working.



Answers

Answer:

Pack of 6

Step-by-step explanation:

Pack of 4 = £1

Packs of 6 = £1.20

Price per unit of each pack:

Pack of 4 ;

Unit price : cost / units

Unit price = £1 / 4 = £0.25

Pack of 6 ;

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Pack of 6 is the best value for money as it has a lower unit price

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Answers

Answer:

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Step-by-step explanation:

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usidjxxjxhxuxhxjxjhxhxhxhxjxhxhxhxj

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Answers

Answer:

Answer: Yes , priya calculated correctly . The value of 40% of 75 is 30

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Answer:

15/24 + 20/24 = 35/24 = 1 11/24

Step-by-step explanation:

because 6 and 8 lcm = 24 soooo

5x4 + 5x3 = 20 + 15 = 20/24 + 15/24

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Answer:

132

Step-by-step explanation:

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The normal price of a bicycle is £120
In a sale, there is 1/5 off the normal price of the bicycle.
Work out the price of the bicycle sale?

Answers

Answer:

76

Step-by-step explanation:

100% = 120

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20% = 120÷100×20

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Find how many girls and boys there are.

Answers

Answer:

28 girls and 40 boys

Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Answers

Step-by-step explanation:

If the interest on the loan is simple interest. Both the situation will have equal amount of interest ( 5*2 =10% of total amount). Therefore, it would be better to pay back with 2% interest paid back in five years. However, if the interest is compounded annually, 5% in 2 years will have lesser interest than 2% in 5 years. Hence, Former option would be better.

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Answers

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Answers

x+5x+6=0
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Answers

Answer:

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Step-by-step explanation:

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