Mathematics High School

1. Tính:
a) 2x*(2x^2-3x+5)+6x^2
b) (2+x)*(2-x)-4
c) (x+5)^2-10x
2. Tìm x, biết:
a) 3*(x^2-2x+1)=3x^2+3
b) (3-x)^2-(x-1)*(2+x)=0

1. Tnh:a) 2x*(2x^2-3x+5)+6x^2b) (2+x)*(2-x)-4c) (x+5)^2-10x2. Tm X, Bit:a) 3*(x^2-2x+1)=3x^2+3b) (3-x)^2-(x-1)*(2+x)=0

Answers

Answer 1

Answer:

1.b (2+x)*(2-x)-4

2.a 3*(x^2-2x+1)=3x^2+3

Related Questions

Consider the linear equation 4x+3y=19 find the value of y that makes the given ordered pair a solution to the equation (x, 5) X=

Answers

Answer:

X=1

Step-by-step explanation:

If the ordered pair of the solution is (x,5), this means that y=5

With this information, we plug in 5 for y and solve for x

4x+3(5)=19

4x+15=19

4x=4

x=1

I give brainlist pls help and don't use me for points​

Answers

Answer:

search up different types of decimals and answer it to the same one that looks the same as the one on the paper .

Step-by-step explanation:

A. Yes because it’s a repeating decimal

B. No because it’s a decimal that neither terminates nor repeats.

C. No for the same reason as B

D. Yes because it’s a terminating decimal


A science class has 5 girls and 3 boys in the seventh grade and 4 girls and 4 boys in the eighth grade. The teacher randomly selects a seventh grader and an
eighth grader from the class for a competition. What is the probability that the students she selects are both boys?
Write your answer as a fraction in simplest form.

Answers

Answer:

To find the probability of picking two boys, we need to first know how many different ways she can pick the 7th and 8th grader.

There are 12 7th-graders and 8 8th-graders. So the total number of ways she can pick is:

12

×

8

=

96

To get two boys picked, there are 5 boys in the 7th-grade class and 4 in the 8th-grade class, so there are:

5

×

4

=

20

ways

Which gives us the probability of:

20

96

=

5

24

≅

21

%

Step-by-step explanation:

Solve for x.

A) 9
C) 10
E) 6
B) 15
D) 4

Answers

Answer:

Hii I'm Philippines slamat sa points

180-142=38
38+15X-3+10X-5=180
30+25X=180
25X=150
X=6

Ilus How many feet are in 8 meters? 1 m = 3.3 ft 8 m = [?] ft​

Answers

Answer:

26.4ft

Step-by-step explanation:

8*3.3

24.6 is the correct answer

I need help with 9-11 I’ll mark
Brainliest


Answers

Answer: it is 26

Step-by-step explanation:

help me
ans should be well explained ​

Answers

Length=L=40mBreadth=B=30m

Perimeter:-

[tex]\\ \sf\longmapsto 2(L+B)[/tex]

[tex]\\ \sf\longmapsto 2(40+30)[/tex]

[tex]\\ \sf\longmapsto 2(70)[/tex]

[tex]\\ \sf\longmapsto 140m[/tex]

Area

[tex]\\ \sf\longmapsto LB[/tex]

[tex]\\ \sf\longmapsto 40(30)[/tex]

[tex]\\ \sf\longmapsto 1200m^2[/tex]

Length (L) of Rectangle = 40 m Breadth (B) of Rectangle = 30mPerimeter of Rectangle:-

= 2(Length + Breadth)

= 2(40 + 30)

= 2(70)

= 140m

Area of Rectangle:-

= Length × Breadth

= 40 × 30

= 1200m^2

Therefore, The perimeter of the rectangle is 140m and the area of the rectangle is 1200m^2.

Plz help I don’t understand

Answers

Answer:

send full question plzzz

Pleaseeee help asappp!

Answers

Answer: A and C

Step-by-step explanation:

plugging the ordered pairs into the suction on a graph is a good way to find them!

Answer:

I answered in comments but it was the first and last one :)

Step-by-step explanation:

find the sum -3/4 + 15 / 24
A. - 3/4
B. 1/2
C. 1/8
D. -1/8 ​

Answers

it’s d.-1/8
i jus know

The length of Chen’s office is 15.5 feet and the width is 7.8 feet. Use the formula P = 2ℓ + 2w to find the perimeter of the office.

Answers

46.6 feet

Step-by-step explanation:

P = 2ℓ + 2w

P = 2(ℓ + w)

P = 2(15.5 + 7.8)

P = 2(23.3)

P = 46.6 feet

Ulysses wants to find the area of the trapezoid shown. Complete the table to show how Ulysses could divide a trapezoid into simpler figures to find its area.​

Answers

The answer is attached below

The table shows how much money Diego has after buying some games and represents a linear function.

What is the y-intercept of the function shown in the table, and what does it represent



A. The y-intercept is (4,0), and the 4 represents the amount of money
Diego spends per game.

B. The y-intercept is (4,0), and the 4 represents the number of games
Diego buys.

C. The y-intercept is (0, 150). Diego has $150 before buying any
games.

D. The y-intercept is (0, 150). Diego spends $150 per game.

Answers

Answer:

C. The y-intercept is (0, 150). Diego has $150 before buying any

Step-by-step explanation:

Brainlylist

The correct statement is The y-intercept is (0, 150). Diego has $150 before buying any games.

what is slope?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx

where, m is the slope

Given:

(0, 150) and ( 1, 112.50)

Now, slope= (112.50-150)/1

slope= -37.5

So, the equation of line is

y- 150= -37.5( x- 0)

y= -37.5x+ 150

Hence, The y-intercept is (0, 150). Diego has $150 before buying any

games.

Learn more about slope here:

https://brainly.com/question/3605446

#SPJ2

A paper company needs to ship paper to a large printing business. The paper will be shipped in small boxes and large boxes. Each small box of paper weighs 25 pounds and each large box of paper weighs 70 pounds. A total of 21 boxes of paper were shipped weighing 1110 pounds altogether. Write a system of equations that could be used to determine the number of small boxes shipped and the number of large boxes shipped. Define the variables that you use to write the system.

Answers

Answer:Number of small boxes shipped = 8

Number of large boxes shipped = 13

Step-by-step explanation:

Step-by-step explanation:

Let x be the number of small boxes and let y be the number of large boxes

According to the first statement, a total of 21 boxes were shipped

Equation 1 will be:

x+y=21

According to 2nd statement, the total weight was 1110 and we know the weight of one small box is 25 and large box is 70

Equation 2 will be:

25x+70y=1110

Use the substitution method for solving the equation

Putting the value of x in equation 2  

25(21-y) +70y =1110

525-25y+70y = 1110

45y = 585

Y=13

Putting the value of y in equation 1  

x+13 = 21

X = 8

Number of small boxes shipped = 8

Number of large boxes shipped = 13

Which is an equation of the line containing (1, –3) and (7, 15)?

y = 3x – 10


y = 3x


y = 3x – 6


y = –3x + 8

Answers

Answer:

y = 3x - 6

Step-by-step explanation:

(1, -3) (7, 15)

Step 1. Find the slope

Slope = 3

Step 2. Create the equation of the slope then use a point and plug it in as terms of x and y with a y-intercept at the end

y = 3x + b

(15) = 3(7) + b

15 = 21 + b

15 - 21 = b

b = -6

Thus, the equation of the line is y = 3x - 6

[tex]\sf 600+303+400[/tex]

Answers

Answer: Is this like simple addition problem? Because if it is that would be 1303 ‍♀️
1,303 if it addition

The quotient of a number x and five​

Answers

Answer: fun fact : by reading what i just right u just lost 5 sec of ut life

Step-by-step explanation:

Write a linear function for the data in each table.
SEE EXAMPLE 2
21.
х
-2
-1
0
1
2.
1
у
N
-1 -2 1 / 4
N
f(x) = -3/2x +3
f(x) = -3/2x-1
f(x) = 2x - 1
f(x) = 2/3x - 1
f(x) = 4x + 2
Bby

Answers

f(×) =-1-21/4yn Thanks me later

i need this pleaseeeee!!!!
(a) The population of a certain city decreased by 4000 people. Write a signed number to represent this population change.
and also b!!!!​

Answers

Answer:

the answer is 0004..................

Please help me due soon

Answers

Answer:

Ima say c but I'm not totally sure soo :)

Step-by-step explanation:

Step-by-step explanation:

answer is D

-5/3

because more the negative,lesser the value

Write an algebraic expression for each phrase?

Don’t know if those are right also

Answers

Answer & Step-by-step explanation:

1) 4x

2) y-8

3) 6/x

4) 12-y

5) y+9

6) 5^2

7) x^4

8) 9+n

9) 64-y

10) 12/n

11) x^2/7

12) x-8=22

13) 2a-b^2

14) 12-ab

Answer:

4xy - 86 / x12 - y9 + y5^2x^49 + x64 - y12 / xx^2 / 7x - 8 = 222a - b^212 - ( a × b )

Hopefully this helped!

Brainliest please?

The value of y varies directly with x. If x = 3, then y = 18. What is the value
of x when y = 84

Answers

The value of x when y = 84 is 14

From the question,

The value of y varies directly with x

That is,

y ∝ x

Introducing the constant of proportionality, k

We get,

y = kx

Also, from the question

If x = 3, then y = 18

Putting these values into the equation, we can determine the value of k

[tex]y = kx[/tex]

[tex]18 = k \times 3[/tex]

Now, divide both sides by 3

[tex]\frac{18}{3}=\frac{k \times 3}{3}[/tex]

[tex]6 = k[/tex]

∴ k = 6

Now, to determine the value of x when y = 84

We will put y = 84 and the value of k =6 into the equation

[tex]y = kx[/tex]

[tex]84 = 6 x[/tex]

Divide both sides by 6

[tex]\frac{84}{6} = \frac{6x}{6}[/tex]

[tex]14 = x[/tex]

∴ [tex]x = 14[/tex]

Hence, the value of x when y = 84 is 14

Learn more here: https://brainly.com/question/17531464

Please please help me with this question

Answers

Answer:

By definition definition a quadratic polynomial is a polynomial of degree two, the highest degree ter. is of second order.

A linear polynomial is defined by y=mx+c, the highest order is of degree 1.

If your x is raised to a fraction power then that is neither quadratic nor linear.

Which of the following is true?

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The Correct choice is :

RT is an altitude of Triangle QRS

State the angle relationship and state the measure of each angle indicated that makes lines u and v parallel

Answers

Answer:

5) Alternate Exterior angles       90º

6) Same side Interior angles.     132º if that says 48º on the page

7) Corresponding angles.       too blurry but they are congruent

8) Alternating Exterior angles.       too blurry but they are congruent

Step-by-step explanation:

Congruent means they are the same measurement just as a reminder :).

a substance is kept at -3. 1*F it's temperature is raised by 2.5 what is the new temperature

Answers

Answer:

.6 degrees

Step-by-step explanation:

-3.1+2.5=.6

Help please slope-intercept intro

Answers

Answer:

(0, -2)

Step-by-step explanation:

y-intercept is the point at x = 0.

y = -3(0) - 2

y = -2

. The area of a rectangle is 8x2 + 10x + 2 cm2. The length is 4x + 2 cm. What is the width of the
rectangle?

Answers

The answer is 31 cm

Which situation can be represented by the equation 4d + 5 = 29?

A.
Marvin worked 4 hours a day plus an additional 5-hour day for a total of 29 hours.


B.
Marvin worked 9 hours a day for a total of 29 hours.


C.
Marvin worked 4 hours one day plus an additional 5 hours for a total of 29 hours.


D.
Marvin worked 4 days plus 5 hours for a total of 29 hours.

Answers

D. Marvin worked 4d+5h for a total of total of 29 hours


If you could help with a few questions that what be lit (giving best answers brainliest)

Answers

Answer:

send your # and ill help you over call

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