Work out the percentage change when a price of £80 is increased to £100.

Answer:

f(x) = x³ + x² - 22x - 40

Step-by-step explanation:

Given that x = a is a zero of f(x) then (x - a) is a factor

Here the zeros are x =  - 4, x = - 2, x = 5 , then the factors are

(x + 4), (x + 2) and (x - 5)

The function is then the product of the factors, that is

f(x) = (x + 4)(x + 2)(x - 5) ← expand the first pair using FOIL

     = (x² + 6x + 8)(x - 5) ← distribute

     = x³ + 6x² + 8x - 5x² - 30x - 40 ← collect like terms

     = x³ + x² - 22x - 40

Answer:

B

Step-by-step explanation:

Given 2 sides then the third side x is

difference of 2 sides < x < sum of 2 sides , that is

28 - 16 < x < 28 + 16

12 < x < 44

Since 12 is less than x then shortest length = 13 cm → B

Answer:

Ok, so if the top line (-25 = -3x + 2) is separate and the second line is separate (4x - 2 = 18) then the answer is x = 9 and  x = 5

Step-by-step explanation:

Can you please elaborate on what the equations are? I will still answer the question.

Answer: x=1+2/21

Step-by-step explanation:

Answer:a two-step equation is an algebraic equation you can solve in two steps. ... It's always a good idea to check our solution in the original equation to make sure you  didn't make any mistakes:

Step-by-step explanation:

Answer:

Step-by-step explanation:2x +6

Answer:

2x+6

Step-by-step explanation:

Definition - To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.

Other examples-

5(4x+5) -------> You would distribute(Multiply) 5 into 4x+5

5 times 4x is equal to 20

5 times 5 is equal to 25

The sign is addition

Thus, 20x+25

Hope you understand the distributive property and hope this helps!

(If possible mark brainliest)

A slope is also known as the gradient of a line. The slope of the line is 7/2.

A slope also known as the gradient of a line is a number that helps to know both the direction and the steepness of the line.

slope = (y₂-y₁)/(x₂-x₁)

The two of the points that lie on the line are (0,0) and (4,14). Therefore,

The slope of the line is,

Slope, m = (14-0)/(4-0) = 14/4 = 7/2

Hence, the slope of the line is 7/2.

Learn more about Slope of Line:

https://brainly.com/question/14511992

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Answer:

50 · (2 x 10^6) = 1 × 10^8

Step-by-step explanation:

In scientific notation a large number is converted to an equivalent decimal number between 1 and 10, multiplied by 10 raised to some power. Very small numbers are converted to an equivalent decimal number between 1 and 10, multiplied by 10 raised to some negative power.

Answer:

Step-by-step explanation:

Consecutive even integers increase by 2.

x   ← an integer

2x  ← an even integer (the smallest)

2x+2   ← next even integer consecutive to 2x (the middle one)

2x+2+2=2x+4  ← the last even integer consecutive to 2x+2 (the largest)

2(2x+2)    ← twice the middle number

2x+2(2x+2)   ←  the sum of the smallest number and twice the middle

2x+4+20   ←  20 more than the largest number

2x + 2(2x + 2) = 2x + 4 + 20

2x + 4x + 4 = 2x + 24

            -4           -4

            6x = 2x + 20

         -2x       -2x

            4x = 20

            ÷2     ÷2

            2x = 10

2x+2 = 10+2 = 12

2x+4 = 10+4 = 14

Answer:

I don't know the answer but all you have to do is multiply

Step-by-step explanation:

Answer:

Option (C)

Step-by-step explanation:

In this question we will use the property " similarity of the triangles".

If DE and AC are parallel two triangles BED and BCA will be similar, corresponding sides of the triangles will be proportional.

[tex]\frac{\text{BA}}{\text{BD}}=\frac{\text{BC}}{\text{BE}}[/tex]

Option (A).

[tex]\frac{\text{BA}}{\text{BD}}=\frac{\text{BC}}{\text{BE}}[/tex]

[tex]\frac{22+12}{12}=\frac{14+26}{14}[/tex]

[tex]\frac{34}{12}=\frac{40}{14}[/tex]

[tex]\frac{17}{6}=\frac{20}{7}[/tex]

But [tex]\frac{17}{6}\neq \frac{20}{7}[/tex]

Therefore, given triangles are not similar.

AC and DE are not parallel.

Option (B).

[tex]\frac{\text{BA}}{\text{BD}}=\frac{\text{BC}}{\text{BE}}[/tex]

[tex]\frac{25}{25-7}=\frac{21+9}{21}[/tex]

[tex]\frac{25}{18}=\frac{30}{21}[/tex]

[tex]\frac{25}{18}=\frac{10}{7}[/tex]

But [tex]\frac{25}{18}\neq \frac{10}{7}[/tex]

Therefore, AC and DE are not parallel.

Option (C).

[tex]\frac{\text{BA}}{\text{BD}}=\frac{\text{BC}}{\text{BE}}[/tex]

[tex]\frac{22.5+15}{15}=\frac{40}{40-24}[/tex]

[tex]\frac{37.5}{15}=\frac{40}{16}[/tex]

2.5 = 2.5

Therefore, AC║DE.

Option (D).

[tex]\frac{\text{BA}}{\text{BD}}=\frac{\text{BC}}{\text{BE}}[/tex]

[tex]\frac{17.5+5}{17.5}=\frac{20.4+6}{20.4}[/tex]

[tex]\frac{22.5}{17.5}=\frac{26.4}{20.4}[/tex]

[tex]\frac{9}{7}=\frac{22}{17}[/tex]

But [tex]\frac{9}{7}\neq \frac{22}{17}[/tex]

Therefore, AC and DE are not parallel.

Option (C) will be the answer.

Answer:

C

Step-by-step explanation:

Answer:

proportional

Step-by-step explanation:

good luck!

Answer: 4 hope this helps i love your prp

Step-by-step explanation:

Answer: The answer is b 100+(-500)

Step-by-step explanation: If you solve for the original and this answer, they will both equal -400

Answer

 The answer is B.

Step-by-step explanation:

step 1: 100+(-500)=-400

Step 2: 100-500= -400

also because

A=600

C= 600

D= -600

So...

B is the logical choice

Answer:

40480

Step-by-step explanation:

find 12% of 46000 and subtract it by 46000

brainliest pls

Answer:

40480

Step-by-step explanation

take 12% of the cost

46000*.12=5520

subtract answer from original number

46000-5520=40480

Answer:

multiply Four-thirds by One-eighth.

multiply Three-fourths by 8.

multiply Four-thirds by 8.

multiply Three-fourths by One-eighth.

Step-by-step explanation:

if wrong just delete

Answer:

Step-by-step explanation:

Answer:

2(9-5x^2)(9+5x^2)

Step-by-step explanation

Answer:

1. 7.5cm

2. 24 weeks

3. 63

4. 35%

Step-by-step explanation:

91*70%=63.7

125-43.75=81.25

100/125= 0.8*43.75=35

P=2l+2w

20=2l+2(2.5)

20=2l+5

-5      -5

15=2(l)

/2   /2

7.5=l

510-150=360

360/15=24

Answer:

Graph (F)

Step-by-step explanation:

Leanor pays a total of $16.50 for every 6 shirts she has dry cleaned.

Unit rate to dry clean the shirts will show the slope of the line plotted for price Vs number of shirts dry cleaned.

Unit rate = [tex]\frac{16.5}{6}[/tex] = $2.75 per shirt

               ≈ $2.8 per shirt

From the given graphs attached,

Slope of the line = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]

Graph (F)

Slope = [tex]\frac{25}{9}=2.78[/tex]

          ≈ 2.8

Graph (G)

Slope = [tex]\frac{50}{3}=26.67[/tex]

Graph (H)

Slope = [tex]\frac{20}{2}=10[/tex]

Graph (J)

Slope = [tex]\frac{45}{2}[/tex] = 22.5

Therefore, graph (F) will be the answer.

Answer:the answer is f be cause if u go to 6 and go up you are around 16

Step-by-step explanation:

Answer:

Option (C)

Step-by-step explanation:

Formula to get the scale factor of any image from it's preimage,

Scale factor of an image = [tex]\frac{\text{Dimension of the image}}{\text{Dimension of the preimage}}[/tex]

From the figure attached,

F' is the image of preimage F after dilation.

Scale factor = [tex]\frac{\text{Length of A'B'}}{\text{Length of AB}}[/tex]

                    = [tex]\frac{4}{6}[/tex]

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

Therefore, Figure F has been dilated by a scale factor of [tex]\frac{2}{3}[/tex] to form F'.

Option (C). will be the answer.

Answer: He did not both sides by 100. He did not look for the common denominator before solving.

x is actlly equal to 64

The answer is C because 6x and 6 are both in the line

Answer:

$637

Step-by-step explanation:

Answer:The endpoint of line CD are given.find the coordinates of the Midpoint M.

1: C(3,-5) and D(7,9)

2: C(-8,-6) and D(-4,10)

Step-by-step explanation: explanation:...

Answer:

7

Step-by-step explanation:

All you do is division the answer is 7

Answer:

Answer:

A. y=-2x+2

Step-by-step explanation:

Answer:

ok ok ima solve it

Step-by-step explanation: