help me plz idk why im very bad at mmath

Answer:

(4x - 5)(x + 2).

Step-by-step explanation:

4x^2 + 3x - 10

4 * 10 = -40

We need 2 numbers whose product is -40 and whose sum is +3.

Theses are = - 5 and + 8.

So we write:

4x^2 + 8x + -5x - 10

= 4x(x + 2) - 5(x + 2)

= (4x - 5)(x + 2).

Answer:

The additive inverse of a real number is the opposite of that number on the real number line. For example, the opposite of −3 is 3. A number and its additive inverse have a sum of 0. The sum of any number and its opposite is equal to zero.

Step-by-step explanation:

the first 9 pages have 1 digit (1 to 9).

the next 90 pages have 2 digits (10 to 99).

that is in total

9×1 + 90×2 = 189 digits.

that leaves us

459 - 189 = 270 digits for pages with 3 digit page numbers (100 and up).

there are 900 pages with 3 digit page numbers = 2700 digits, which is larger than 270.

so, the solution must be in this interval (there are no pages with 4 digit page numbers like 1000).

after how many pages with 3 digit pages numbers do we have a total of 270 digits ?

270/3 = 90 pages.

so, we have 9 + 90 + 90 = 189 pages in the book.

Answer:

7

Step-by-step explanation:

Given the following :

7 heart stickers and 14 star stickers :

The greatest number of pages that can be decorated using the stickers above without any left over ;

To get this we obtain the greatest common factor of 7 and 14

Factors of 14

14 : 1, 2, 7, 14

Factors of 7

7 : 1, 7

The greatest factor common in both numbers is 7

Hence, greatest number of pages that can be decorated without any leftover is 7

Step-by-step explanation:

Let people behind you=x

People ahead of you will be x+2

Total number of people in the line(including you) = x+(x+2)+1 = 2x+3

Also, 2x+3=3x

So x=3

People ahead = x+2 = 5

People behind = x = 3

Answer:

I think its y=mx

Step-by-step explanation:

not sure :)

Answer:

B. 1002

Step-by-step explanation:

0.o :P XD :V

Answer:

A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

Answer:

A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

Step-by-step explanation:

Answer:

a straight line can be drawn through all the points and the lines passes through the point where x = 0 and y = 0 (the origin).

Step-by-step explanation:

in a proportional relationship, one variable is always a constant value times the other. That constant "a" is know as the "constant of proportionality".

y = ax

and as you can easily see, that implies if x = 0, then y = 0.

therefore, the given answer is correct.

Answer:

138600

Step-by-step explanation:

154000/10=15400

154000-15400=138600

Answer:

5.70

Step-by-step explanation:

18y=17 then y=17/18

3x-1/9y=18y

3x-1/9×17/18=18×17/18

x=2771/486

x=5.70

Answer:

Equation : 6x + 8 = 26

x = 3

Step-by-step explanation:

The given shape is a rectangle.

Here ( x + 1 ) cm and ( 2x + 3 ) cm are the sides,

where,

Length ( l ) = 2x + 3

Breadth ( b ) = x + 1

Perimeter is the sum of all sides.

Formula : -

Perimeter of a rectangle = 2 ( l + b )

Perimeter of a rectangle

= 2 ( 2x + 3 + x + 1 )

= 2 ( 2x + x + 3 + 1 )

= 2 ( 3x + 4 )

= 2 ( 3x ) + 2 ( 4 )

= 6x + 8

The given value of the perimeter is 26 cm.

So the equation is,

6x + 8 = 26

The value of x can be found by solving this equation.

6x + 8 = 26

Subtract 8 on both sides,

6x = 26 - 8

6x = 18

Divide 6 on both sides,

x = 18 / 6

x = 3

Hence the value of x is 3.

Answer:

5

Step-by-step explanation:

11-3(2)=

11-6=

5

Answer:

5

Step-by-step explanation:

11-3(2) replace m with 2

3x2= 6

11-6 =5

Answer:

5.15

Step-by-step explanation:

Answer:

x = 8

Step-by-step explanation:

[tex] - \frac{1}{2} x + 3 = - x + 7[/tex]

Collect like terms and simplify

[tex] - \frac{1}{2} x + x = 7 - 3 \\ \frac{1}{2} x = 4[/tex]

Cross Multiply

[tex]x \times 1 = 2 \times 4 \\ x = 8[/tex]

Answer:

x = 8

Step-by-step explanation:

-1/2x+3=-x+7

Add x to each side

-1/2x+x+3=-x+x+7

1/2x+3=7

Subtract 3 from each side

1/2x +3-3=7-3

1/2x=4

Multiply by 2

1/2x*2 = 4*2

x = 8

Answer:

Solved in the diagram

Needs to be 20characters long

A C D

Step-by-step explanation:

Answer:

he uses 12 cups of flour for 24 cupcakes

that means he's using 1 cup flour for 2 cupcakes

equation =

c = 2f

Answer:

28.26

Step-by-step explanation:

Use the formula, πr^2 to find the area of circles

Answer:

14 months

Step-by-step explanation:

501 - 25 = 476

476 / 34 = 14

Answer:Cost = $33 per month + Fee 1.  C(m) = 33m + F 33(6) + F = 228198 + F = 228F = $30 membership fee C(m) = 33m + 30 2.  At 9 months:  33(9) + 30 = $327

Step-by-step explanation:

Answer: {-1, 0, 1}

Explanation: The range of a relation is the set of all y-coordinates.

So the range is {1, 0, -1} which would be your answer.

Note however that the range is usually written in ascending order.

In other words, from least to greatest.

So our range can be written as {-1, 0, 1}.

Answer:

30%

Step-by-step explanation:

Answer:

X=28

Step-by-step explanation:

Answer:

28

Step-by-step explanation:

A triangle always has 180° so that means 40° (2x+9)° and another angle add up to 180°.

We can find out two angles in order to find out the third, one of them is 40°  the other is 180°-105° because there are 180° on a line.

you get 75.

75°+40°=115°

180°-115°=65°

2x+9=65°

Make x the subject of the formula:

2x=56

(take away 9)

x=28

(divide both sides by 2)

Answer: Bobby is right, because at x = -2, 3, and 5, the denominator of the function equals zero, which is by definition undefined.

I hope this helps :)

Step-by-step explanation:

Answer:

3/2

Step-by-step explanation:

Just count the rise over run

Answer:

[tex]\frac{3}{2}[/tex]

Step-by-step explanation:

Use rise/run.

Between points, it rises by 3, then runs laterally by 2.

Thus, 3/2.

Answer:

Substitute –3 for x and 5 for h in the difference quotient.

Step-by-step explanation:

The difference quotient for the function f(x) is  21x² + 21xh + 7h² + 2. Now, we know that the difference quotient equal f(x + h) - f(x) = 21x² + 21xh + 7h² + 2. The change in x is h = x₂ - x₁. So, if x changes from x = -3 to x = 2,  where x₁ = -3 and x₂ = 2, h = x₂ - x₁ = 2 - (-3) = 2 + 3 = 5.

So to find the average rate of change of f(x) from x = -3 to x = 2, we substitute x = -3 and h = 5 into the difference equation  f(x + h) - f(x) = 21x² + 21xh + 7h² + 2. Since, x starts at x = -3 and increases by 5 units to x = 2.

Answer:

(on edge) B. Substitute –3 for x and 5 for h in the difference quotient.

Step-by-step explanation:

Hey there!
Let's simplify

[tex]\bold{\displaystyle\frac{3500}{9} }}[/tex]

Is there any way we can simplify this fraction?

No. 3500 and 9 do not have any common factors.

This fraction is already in its simplest form.

However, [tex]\bold{\displaystyle\frac{3500}{9} }[/tex] is an improper fraction.

An improper fraction is a fraction where the numerator (top) is greater than its denominator.

You can easily remember where the denominator is by remembering this:

The Denominator is Down

The nice thing about improper fractions is that you can simplify them... A little.

Hey! How can we simplify a fraction that's already in its simplest form?!

If the fraction is improper, then we can just write it as a mixed number.

A mixed number is a number with both a whole number and a fraction.

Let's write this fraction as a mixed number.

First, how many times does 9 go into 3,500? (evenly)

388 times

Now, take 388 and multiply it times 9:

3,492

Subtract:

3,500-3,492=8

That's our numerator.

Therefore, the mixed fraction is

[tex]\bold{388\displaystyle\frac{8}{9} }[/tex]

We can easily check if this is correct by multiplying 388 times 9 and adding 8.

See? We ended up with 3,500.

Hence, 3500/9 simplified is

[tex]\boxed{\boxed{\bold{388\frac{8}{9} }}}[/tex]

Hope everything is clear.

Let me know if you have any queries; if you do, please comment.

#LearningDoesn'tEnd

[tex]\rule{200}{2}[/tex]

Answer:

3 m/s²

Step-by-step explanation:

"It took 1 s more to accelerate from a velocity of 1 m/s to a velocity of 5 m/s than it took to accelerate from rest to a velocity of 1 m/s.  Find the acceleration."

Acceleration is equal to change in velocity over change in time.  The acceleration is constant, so we can write a proportion:

(1 m/s − 0 m/s) / t = (5 m/s − 1 m/s) / (t + 1 s)

1 / t = 4 / (t + 1)

4t = t + 1

3t = 1

t = ⅓

The acceleration is therefore:

a = Δv / Δt

a = (1 m/s − 0 m/s) / (⅓ s)

a = 3 m/s²