: Lập bảng biến thiên và vẽ đồ thị các hàm số sau 1) (P):y=2x2 −5x+3

Answer:

1: 0.625, 2: 1.05, 3: 2 13/20

Step-by-step explanation:

Use a calculator to determine the exact value of the fractions, or do it by hand.

Answer:

0.625 , 1.05, 2 13/20

Step-by-step explanation:

Well, this isn't that hard if you really think about it.

For Number 1: 5/8 as a decimal, first you want to divide

100 by 8, which equals to 12.5. Then multiply 12.5 by 5 which gets you 62.5

Move the decimal place 2 to the left, and you get 0.0625.

For Number 2: 1 and 1/20

100/20=5

So you have 1 and 5/100, convert 5 to percent so 5%

5%+100%=105%

105= 1.05

Number 3: 2.65

100/20=5

13x5=65

0.65+2= 2.65, 2 13/20.

Answer:

with what

Step-by-step explanation:

Answer:

[tex]x=\frac{6}{7}[/tex]

Step-by-step explanation:

Hope this helps!

Answer:

8

Step-by-step explanation:

20 percent of 40 is 8

I hope this is 5he answer you were looking for

Answer:

18

Step-by-step explanation:

[tex]\sqrt{((-2)^2 + 12)} + 14[/tex]

= [tex]\sqrt{(4 + 12)} + 14[/tex]

= [tex]\sqrt{16}+14[/tex]

= 4 + 14

= 18

Hope this helps!

Answer:

[tex] \sf 18[/tex]

Step-by-step explanation:

[tex] \sf = \sqrt{ { - 2}^{2} + 12} + |14| [/tex]

[tex] \sf = \sqrt{(( - 2) \times ( - 2)) + 12} + 14[/tex]

[tex] \sf = \sqrt{4 + 12} + 14[/tex]

[tex] \sf = \sqrt{16} + 14[/tex]

[tex] \sf = \sqrt{ {4}^{2} } + 14[/tex]

[tex] \sf = 4 + 14[/tex]

[tex] \sf = 18[/tex]

Answer:

a

Step-by-step explanation:

Answer:

iI think the answer is 9

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

A quadratic is 'involving the second and no higher power of an unknown quantity or variable.'

Therefore, we can exclude b and d easily because both have a higher power of 2. 9x^(2) is not a binomial because it only has 1 term (i think its called a term) leaving A, x^2-16x as the only answer left.

Answer:

822,672

Step-by-step explanation:

(2045+2553-3022)\times 522

(2045+2553−3022)×522

(2045+2553-3022)522

1 Simplify  2045+2553 to 4598.

(4598-3022)times 522

(4598−3022)×522

2 Simplify  4598-3022 to1576.

1576 times 522

1576×522

3 Simplify.

822672

Answer:

width = 15 inches

length = 30 inches

Step-by-step explanation:

Let width = w

Length =2w

Perimeter = 90 inches

2*(length + width) = 90

2*(2w +w ) = 90

2* 3w = 90

6w = 90

  w = 90/6

 w = 15 units

length = 2*15 = 30 units

Answer:

1

Step-by-step explanation:

Substitute the values for their respective variables.

[tex]\frac{ac}{b^2+1}\\\\\frac{(2)(5)}{(3)^2+1}\\\\\frac{10}{9+1}\\\\\frac{10}{10}\\\\1[/tex]

Answer:

Ffggf

Step-by-step explanation:

Step-by-step explanation:

α = α

x = 96°

Answer → x = 96° (degree)

Answer:

96 Degrees

Step-by-step explanation:

If we look at the problem, we know that due to the fact that they are adjacent that they MUST be equal.

Here is the proof:

We'll assign each angle a letter as following

A B C D with A being the top left and D being the bottom right!

Now that we know that, first off, A has to be equal to 180-96 due to them being Supplementary Angles.

Therefore, A is 84 degrees.

Now to find x, we can use Supplementary Angles again.

x has to be 180-84 which is 96 degrees proving the theorum.

Have a nice day!

Answer:

1 and 2

1 and 5

10 and 0.1

the last is unreadable

Step-by-step explanation:

Answer:

The answer is 100.

Step-by-step explanation:

I started with solving 4 divided by 5. It was 0.8. I then started going thru 1 to 10 to 20 to 50 to 100. I was comparing big numbers. I then realized 100+0.8 times 100 = 180!

Answer: [tex]x=100[/tex]

If the equation is [tex]x+\frac45 x = 180[/tex] we add on the LHS: [tex]x(1+\frac45) = 180 \rightarrow x(\frac55+\frac45)= 180\\\frac95 x = 180[/tex]

At this point we divide both sides by 9 and multiply by 5:

[tex]x=\frac 59 (180) = \frac59 (2\times 9 \times 10) = 100[/tex]

Answer:

Function 2, because Ricky spends $7 each week and Tony spends $6 each week

Step-by-step explanation:

You find the rate of weekly rate of change by calculating the difference of the amount changing each week:

24 - 30 = - 6

18 - 24  = - 6

12 - 18 = - 6

As you see the rate of change is constant: - 6 dollars per week. This means that Tony is spending 6 dollars every week

Function 2: y = –7x + 30  

The rate of change is the slope (m) of the linear function, and this is the coefficient of the independent variable, x.

This equation is written in slope intercept form (y= mx+b)

Then the rate of change is - 7 dollar per week. This means Ricky spends 7 dollars every week.

Now you know that the two rates are constant and that the second function shows a steeper decreasing.

Answer: it’s b lol

Step-by-step explanation: got it right on my quiz

Answer:

9

Step-by-step explanation:

You choose the middle one because 3<(4)<10 makes sense where as the other ones don't when you plug in 4. Then you solve the equation which is x^2-7 and then you get 16-7 which is 9.

Answer:

[tex] \frac{ \frac{x + 2}{x - 1} }{ \frac{x - 3}{x - 1} } \\ = \frac{x + 2}{x - 1} \times \frac{x - 1}{x - 3} \\ = \frac{x + 2}{x - 3} \: when \: x \ne3[/tex]

Answer:i don't know sorry

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

next two the = there are 2 ys

Answer:

Only 1

Step-by-step explanation:

It does not have the same slope thus meaning its not it does not have infinite or no solution, which leaves out 1 solution

Answer:

B.

Step-by-step explanation:

Unit rate is $4.04 per oz

Answer:

A & D

Step-by-step explanation:

A:

[tex]y = \frac{6}{5} x[/tex]

D:

[tex]y = 4x[/tex]

Step-by-step explanation:

g(x) = x² + 3

g(-5) = (-5)² + 3

g(-5) = 25 + 3

g(-5) = 28

Answer: 1. not revisable

2. not revisable  

3. Not reversible

4. not revisable

Step-by-step explanation:   1.Likewise, a number is a reversible multiple if the number formed by  2058 is not reversible because 8502/2058 = 4.131, which is not a whole number

2. When rabbits eat carrots you cannot form the carrot back to its original form so that's why its irreversible (not/non revisable)

3.If two perpendicular lines intersect, they form four 90* angles. ... whose sum measures to 90 degrees - The statement is not reversible

4. a few species of cold-blooded mammals exist but you cannot change a warm blooded animal into cold.  

Answer:

no

Step-by-step explanation:

Answer:

Step-by-step explanation:

45–120

75–215

145–400

Step-by-step explanation:

This table shows the heights of three different rock formations that Jeremy is considering.

45-120

75-215

145-400

1: Statement about the equivalence of two formulas. 2: An expression that expresses a chemical reaction using a chemical symbol.

There are two types of equations, identities and constraint equations. The ID applies to all values ​​of the variable. Constraint equations apply only to specific values ​​of variables. The equations are described as two equations joined by an equal sign ("=").

To learn more about an equation, at

https://brainly.com/question/2972832

#SPJ2.

Answer:

-9.87

Step-by-step explanation:

-4.53 -5.43

= -9.87

Hello!

-4.53+(-5.34)

-4.53-5.34

-9.87

Hope this helps!

~Just a joyous gal

#CarryOnLearning

Good luck on your assignment and have a marvellous day!

Answer given by

[tex]-SilentNature-[/tex]

Answer: 1. tells the dentist that he doesn't feel well and that he will come back next time.

2. get sent to the crematory

3.Because the boy was young and beautiful.

hopes this helps