1 Expand and simplify each expression
a) x(x+2)+x(x+5)

Answer:

answer is C=1.68

im sorry if im incorrect

mark as brainliest if i helped you :)

Step-by-step explanation:

Answer:

Answers are listed :)

Step-by-step explanation:

1. -81/2 or -40.5

Both answers are correct forms I just didn't know if you wanted fraction or decimal form :)

2. Lots of answers for this one but ill give you mine: Mr. Candeleria probably rounded down his estimate number and in most cases like this you should round up.

Hope this helps :)

The solution is

a) The value of the equation is -40.5 or -81/2

b) Percentage error of Mr.Candelaria in estimating the tickets is 13.42 %

What is Percentage Error?

The difference between an exact value and an approximation to it is the approximation error in a data value. Either an absolute error or a relative error might be used to describe this error.

Percentage error is the difference between the measured value and the true value , as a percentage of the true value

Percentage Error = [ ( | Measured Value - True Value | ) / True Value ]x 100

Given data ,

a)

Let the equation be represented as A

Now , the value of A is

A = ( 3 4/5 )x - ( 2 1/2 )

On simplifying the equation , we get

A = ( 19/5 )x - ( 5/2 )

when x = -10 , substitute the value of x = -10 , we get

A = ( 19 × -2 ) - 5/2

A = -38 - 5/2

A = -81/2

A = -40.5

Therefore , the value of A is -40.5

B)

The measured value = 400 tickets

The true value = 462 tickets

Now , the percentage error in estimating the tickets by Mr. Candelaria is given by the formula ,

Percentage Error = [ ( | Measured Value - True Value | ) / True Value ]x 100

Substituting the values in the equation , we get

Percentage Error = [ | 400 - 462 | / 462 ] x 100

Percentage Error = [ | -62 | / 462 ] x 100

Percentage Error = 0.134199 x 100

Percentage Error = 13.419 %

Therefore , the percentage error is 13.42 %

Hence , the percentage error of Mr.Candelaria in estimating the tickets is 13.42 %

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Answer:

Third option

Step-by-step explanation:

All the other ones have a certain proportion

Answer:

your answer is 4

Step-by-step explanation:

Answer:

x=8 y=4

Step-by-step explanation:

Im assuming that you are learning standard form and to solve for a variable you set the other value to 0.

3x+6(0)=24

3x=24

divide by 3

x=8

Answer:

I love algebra anyways

the ans is x=8−2y its in the picture and so is the steps

(hope that helped can i plz have brainlist it will make my day :D hehe)

Step-by-step explanation:

Answer:

Hindi ko pa po alam solve nyan grade six palang po ako my apologies

Answer:

z = 40°

y = 40°

x = 121°

Step-by-step explanation:

121 + 19 = 140

180 - 140 = 40

z = 40

y = 40

x = 121

40 + 19 = 59

180 - 59 = 121

Answer:

The answer is 25/6 < x < 50/3

Step-by-step explanation:

Move all terms not containing  x  from the center section of the inequality.

hoped this helped!

Brainly, please?

Answer:

nth term = 10 + (n - 1)-3

Step-by-step explanation:

a) 10, 7, 4, 1

First term,a = 10

Common difference,d = 7 - 10 = -3

nth term = a + (n - 1)d

nth term = 10 + (n - 1)-3

b 6, 4, 2,0

First term,a = 6

Common difference,d = 4 - 6 = -2

nth term = a + (n - 1)d

nth term = 6 + (n - 1)-2

c) 9,4 -1,-6

First term,a = 9

Common difference,d = 4 - 9 = -5

nth term = a + (n - 1)d

nth term = 9 + (n - 1)-5

d) 2.5, 2. 1.5, 1

First term,a = 2.5

Common difference,d = 2 - 2.5 = -0.5

nth term = a + (n - 1)d

nth term = 2.5 + (n - 1)-0.5

Answer:

4 / 15

Step-by-step explanation:

Fraction that likes stuffed animal = 16/20

4/12 of fraction who like stuffed animals prefer shaggy ones ;

Fraction of second grade that like stuffed shaggy animals ;

4/ 12 of 16/20

(4 /12) * (16 / 20)

(4 * 16) / (12 * 20)

= 64 / 240

= 4 / 15

Answer:

Step-by-step explanation:

Area of box = 14^2 = 196 in^2

Radius r of pizza = 12/2 = 6

Area of pizza = πr² = 36π ≈ 113.04 in^2

Answer:

82.96

Step-by-step explanation:

Answer:

1) SAS

2) AA

3) SSS

Step-by-step explanation:

Answer:

Ben spent $9.32 on stamps total

Step-by-step explanation:

19x0.39= 7.41 because it says he bought 19 of these and they each cost $0.39 so you just multiply the two

8x0.24= 1.92 because of the same reason for the other it says he bought 8 of these and each costs $0.24 so you just multiply the two which gets you 1.92

next you add together the two totals of the stamps which is 7.41 and 1.92

7.41+1.92= 9.32

Answer:

C.

Step-by-step explanation:

It's 112 * 3.14

= 351.68 cm^3.

Answer:

12+9q−9p

Step-by-step explanation:

−7p+15−2q+11q−2p−3

Combine −2q and 11q to get 9q.

−7p+15+9q−2p−3

Combine −7p and −2p to get −9p.

−9p+15+9q−3

Subtract 3 from 15 to get 12.

−9p+12+9q

Answer: −9p+9q+12

Step-by-step explanation:

the contstants of the p and q variable will add up to 9 and the number will add to 12

Answer:

7 groups of 9 and one group of 4    (total of 8 groups)

Step-by-step explanation:

Answer:

7 full groups, small group 4, total groups together 8

Answer:it’s B trust me

Step-by-step explanation:

Statemen B is true about the given function.

A relationship between a group of inputs and one output is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function. Typically, f(x), where x is the input, is used to represent a function.

A. The domain of f(x) is x > 0 is true for the function [tex]f(x) = (1/10)^x[/tex] because any positive real number can be raised to any real power, so the domain of this function is all real numbers greater than zero.

B. The statement "The graph contains (1)" is not clear. If it means whether the point (1, f(1)) lies on the graph, then we can find that [tex]f(1) = (1/10)^1 = 1/10[/tex], so the point (1, 1/10) lies on the graph. Therefore, the statement is true.

C. The function [tex]f(x) = (1/10)^x[/tex] is always decreasing because as x increases, [tex]f(x) = (1/10)^x[/tex] becomes smaller and smaller, approaching zero as x approaches infinity.

D. The range of f(x) is y < 1 because as x increases, [tex](1/10)^x[/tex] becomes smaller and smaller, approaching zero but never equaling one. So, the range of the function is all real numbers less than one, but not including one itself.

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Answer:

x = 116º

Step-by-step explanation:

the sum of angles on the same side equals 180º so:

x + 64º = 180º                 subtract 64º from both sides

x = 116º

Answer: 116º

Step-by-step explanation:

Answer:

y=-3

Step-by-step explanation:

Answer: a=c^2﹣b^2=152﹣132≈ 7.48331

Step-by-step explanation: 7.48331

Answer:

Option (1)

Step-by-step explanation:

Vertex form of the quadratic equation is given by,

y = (x - h)² + k

Where (h, k) is the vertex.

From the graph attached,

Vertex of the parabola is (0, 4).

Therefore, equation of the parabola will be,

y = (x - 0)² + 4

y = x² + 4

Function representing the parabola will be,

f(x) = x² + 4

For the zeros of the quadratic function we find the value of x where f(x) = 0.

x² + 4 = 0

x² = -4

x = ±√(-4)

Since, square root of a negative number is not defined, zeros of the function will be imaginary.

Therefore, both the zeros will be imaginary.

It's clear from the graph, there are no x intercepts of the function Or zeros are imaginary.

Option (1) will be the answer.

Answer:

3102x

Step-by-step explanation:

Answer:

90

Step-by-step explanation:

Answer:

i dont know..

Step-by-step explanation:

Answer:

$4956.23 approx

Step-by-step explanation:

Given data

P= $4860

R= 4%

T= 6 months = 0.5 years

Applying the compound interest formula we have

A=P(1+r)^t

Substitute

A=4860(1+0.04)^0.5

A= 4860(1.04)^0.5

A=4860*1.0198

A=4956.228

Hence the balance will be $4956.23 approx

Step-by-step explanation:

no false because can't be y and x in the same question

Answer:

No

Step-by-step explanation:

Because 7(y+6) = 7y + 42, not 7x + 42.

Answer:

No

Step-by-step explanation:

Writing the quadratic equation is usually the first step to take in graphing quadratic equations. Afterward you define the variables in the equation.

Answer:

So the answer is 8

Step-by-step explanation:

48 divided by 2         24

-------                        ---------

6  divided by 2      3

24 divided by 3 is 8 your welcome. just thank me

Answer:

105

Step-by-step explanation:

so you divide 270 by 18 hours to get 15 , so she gets paid £15 every hour

you times 15 by 7 = 105

Answer:

Linda would make $105 for 7 hours of work, she made the same amout of money per hour.

Step-by-step explanation:

270/18=15

15 x 7= 105

Answer:

Step-by-step explanation:

f(x)=-5cos(x)-5

a=-5

d=-5

Answer:

1.-204.5 2.-557

Step-by-step explanation:

Answer:

(8, 2)

Step-by-step explanation:

Subtract the two D points.

(-12) - (-3) = -9

21 - 10 = 11

Then, use it to translate.

(17,-9)

(x - 9, y + 11)

= (8, 2)

The image of E(17,-9) under the translation will be (8,2)

The steps are as follow:

D(-3,10)

D'(-12,21)

D'-D = (-12+3,21-10)

X(-9,11)

E' = (17-9,-9+11)

E' = (8,2)

Therefore the image of E(17,-9) under the translation will be (8,2)

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