pls help me with this

Answer:

0.65 can I have  branliest please?

9. x + (y - 3 - 4x + 2( 3x - (-y - 1) + 2y) - 3x)

= x + (y - 3 - 4x + 2 (3x + y - 1) +  2y - 3x)
= x + (y - 3 - 4x + 6x + 2y - 2 + 2y - 3x)
= (x - 4x + 6x - 3x) + (y + 2y + 2y) - (3+2)
= 0 + 5y - 5
= 5y - 5 (or simplified as 5(y-1)

10. 6 + (-a -3(b + 6(a - b)+4a) - 2b)
= 6 + (-a - 3(b + 6a - 6b + 4a) -2b)
= 6 + (-a - 3b + 18a - 18b + 12a - 2b)
= 6 + (-a + 18a + 12a) + (-3b - 18b - 2b)
= 6 + 29a - 23b

Lmk if it's wrong, I'll try to edit it.

Answer:

x=5

Step-by-step explanation:

Subtract 20

from both sides of the equation

2

Simplify

Subtract the numbers

Subtract the numbers

3

Subtract  x

from both sides of the equation

Answer:

X = 5

Step-by-step explanation:

To solve for x, you need to get x to one side and everything else to the other side.

3x+20=x+30

Since there is only one positive x on the right, we can subtract it from both sides. This moves it over.

2x+20=30

Since there is a +20 on the same side we put our x, we need to subtract it from both sides to move it over.

2x = 10

Now x is being multiplied by 2. To get rid of it, we divide both sides by 2.

x = 5

Step-by-step explanation:

Option C. Even though it's not Mathematics

Answer:

A. It's new, so it's recent and probably more applicable

Answer:

0

Step-by-step explanation:

The slope is 0 because the y value stays the same

Answer:

Simplify square root of x^2-9

√

x

2

−

9

Rewrite

9

as

3

2

.

√

x

2

−

3

2

Since both terms are perfect squares, factor using the difference of squares formula,

a

2

−

b

2

=

(

a

+

b

)

(

a

−

b

)

where

a

=

x

and

b

=

3

.

√

(

x

+

3

)

(

x

−

3

)

Answer:

D because 1.1% is the smallest percent of them all

The number of unit tiles need to be added to complete the square and form a perfect square trinomial expression is 25.

Algebra tiles used to represent the algebraic expression in the table form. The shape of algebra tile is square and rectangle, in which the variables represented.

A trinomial which is expressed as the square of the binomial equation is a perfect square trinomial.

Let the missing number for the given expression is g. Therefore,

[tex]x^2 +10x+g[/tex]

Now, to make the above expression the perfect square trinomial expression, this has to be make such that it can be written in the squared form.

To find the value of g, half the middle term and square it. As the value of the middle term is 10. Thus, the value of the g is,

[tex]g=\left(\dfrac{10}{2}\right)^2\\g=5^2\\g=25[/tex]

Put this value in the above expression as,

[tex]x^2 +10x+25\\(x+5)^2[/tex]

Hence, the number of unit tiles need to be added to complete the square and form a perfect square trinomial expression is 25.

Learn more about the algebra tile here;

https://brainly.com/question/4407619

Answer:

5.76

Step-by-step explanation:

17.28/3

Answer:

6 inches wide and a row of 7 stamps how wide is each stamp

Answer:

Step-by-step explanation:

A tangent to a circle always meets a diagonal of a circle at right angles.

w = 90

Answer:

​Which diver is farthest from the surface?      Dave

​What is the depth of the shallowest diver?  12.67    

​What is the distance between Steve Z. and Audrey?     51

​There is a GPS buoy for fishermen located 30 meters below the surface.  How far is Jacques from the buoy?    1072

Step-by-step explanation:

so you answer is 4315.07498027

Answer:

- 9 and 28

Step-by-step explanation:

substitute the given values for x, y, z into the expressions

1

- (3 - 2) - 4(3 + 1) + 1 + (2(3) + 2)

= - 1 - 4(4) + 1 + 6 + 2

= - 1 - 16 + 9

= - 17 + 9

= - 8

2

4(2)  - 6(- 3 + 1²) + 4(2)

= 8 - 6(- 3 + 1) + 8

= 8 - 6(- 2) + 8

= 8 + 12 + 8

= 28

Answer:

Step-by-step explanation:

You want to evaluate these expressions when (x, y, z) = (3, 2, 1).

We find it easier to evaluate the expression when it is simplified to a form that minimizes that amount arithmetic we need to do. So, our evaluation does that first. Then the corresponding values are put where the variables are in the expression, and the arithmetic is carried out.

Simplifying, we find the sum to be ...

  -x +y -4x -4z +z +2x +y = x(-1-4+2) +y(1+1) +z(-4+1)

  = -3x +2y -3z = 2y -3(x +z)

  = 2(2) -3(3 +1) = 4 -12

  = -8

Simplifying, we find the sum to be ...

  4y +6x -6z² +4y

  = 6x +8y -6z²

  = 6(x -z²) +8y

  = 6(3 -1²) +8(2) = 12 +16

  = 28

<95141404393>

The solution of the given equation will be y = 29 and x = 6.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If they both are equal to y, they must be equal to each other, therefore,

6x-7 = 3x+11

3x = 18

x=6

Y  =  6x  -  7

y  =  6 x 6  - 7

y  =  36  -  7

y = 29

Therefore the solution of the given equation will be y = 29 and x = 6.

To know more about equations follow

https://brainly.com/question/2972832

#SPJ2

Answer:

128

Step-by-step explanation:

The approximate length, to the nearest thousandth, of one side of this field is 3.162 miles. Then the correct option is C.

It is a polygon that has four sides. The sum of the internal angle is 360 degrees. In a square, opposite sides are parallel and all sides are equal and each angle is 90 degrees. And its diagonals are also equal and intersect at mid-point at right-angle.

A square field has an area of 10 square miles.

Let the side of the square be x.

We know that the area of the square will be

[tex]\rm (Side)^2 = Area[/tex]

Then we have

[tex]\rm x^2 = 10\\\\\rm x \ = \sqrt{10}\\\\\rm x \ = 3.162[/tex]

The approximate length, to the nearest thousandth, of one side of this field is 3.162 miles. Then the correct option is C.

More about the square link is given below.

https://brainly.com/question/13747846

Answer:

65 students speak 3 or more languages

Step-by-step explanation:

The capacity of this fuel can is equal to 5 liters.

Given the following data:

To calculate the capacity of this fuel can in litres:

In order to calculate the capacity of this fuel can, we would determine its volume by using this formula:

[tex]Volume = length \times breadth \times height[/tex]

Substituting the given parameters into the formula, we have;

[tex]Volume = 10 \times 20 \times 25[/tex]

Volume = 5,000 [tex]cm^3[/tex].

In liters:

1 [tex]cm^3[/tex] = 0.001 liters.

5000 [tex]cm^3[/tex] = 5 liters.

Capacity = 5 liters.

Read more on volume here: brainly.com/question/25248189

Answer:

Vertical is the answer.

Step-by-step explanation:

Answer:

A) 0 ≤ n ≤ 7

B) initial height of plant = 8 cm

C) average rate of change = 0.475 cm/day.  

Plant grew an average of 0.475 cm per day from day 2 to day 6

Step-by-step explanation:

[tex]f(n)=8(1.05)^n[/tex]

Part A

Given height = 11.26 cm

[tex]\implies 8(1.05)^n=11.26[/tex]

[tex]\implies(1.05)^n=\dfrac{11.26}{8}[/tex]

[tex]\implies(1.05)^n=1.4075[/tex]

Taking natural logs:

[tex]\implies \ln(1.05)^n=\ln(1.4075)[/tex]

[tex]\implies n\ln(1.05)=\ln(1.4075)[/tex]

[tex]\implies n=\dfrac{\ln(1.4075)}{\ln(1.05)}[/tex]

[tex]\implies n=7.005819448[/tex]

[tex]\implies n \approx7[/tex]

Therefore, the scientist concluded his study after 7 days, so the domain is 0 ≤ n ≤ 7

Part B

y-intercept is when the curve intersects the y-axis (when n = 0):

[tex]\implies f(0)=8(1.05)&^0=8\times1=8[/tex]

The y-intercept represents the initial height of the plant, which is 8 cm

Part C

Rate of change = change in y ÷ change in x

⇒ rate of change = change in f(n) ÷ change in n

[tex]\implies f(2)=8(1.05)^2=8.82[/tex]

[tex]\implies f(6)=8(1.05)^6=10.72076513...[/tex]

[tex]\implies \textsf{rate of change} \ =\dfrac{f(6)-f(2)}{6-2}=0.4751912813...[/tex]

So the average rate of change was 0.475 cm/day.  This indicates that the plant grew an average of 0.475 cm per day from day 2 to day 6 (over a period of 4 days).

ETA: please see attached graph.  The gray dotted curve is the function, and the black solid curve is the function with the restricted domain of 0≤n≤7 since the study took 7 days.

Answer:

6 people had blue eyes

45 miles

15 crayons

15 pages

Step-by-step explanation:

Q: There were 30 people in a room. One-fifth of the people had blue eyes. How many people had blue eyes.

A:  total number of people x 1/5 = 30 x 1/5 = 6

Q: Evan's mother drove 30 miles on Wednesday and another 15 mile on Wednesday. How many miles did she drive in all?

A: total miles = 30 + 15 = 45 miles

Q: Jada had 30 crayons. She lost 15 of the crayons. How many crayons does she have left?

A: total number of crayons - number lost = 30 - 15 = 15 crayons left

Q: Amelie read 30 pages of a book. She read 15 of the pages on Monday. How many pages did she read on Monday?

A: 15 pages, as the question states "She read 15 of the pages on Monday"

ANSWER:

450

6 of them had Blue eyes

Evan's mother drove 45 miles in total.

Jada had 15 crayons left

Amelie read 15 pages on monday.

Answer : B

First year : 25750 x 80% = 20600
Second year : 20600 x 80% = 16480
Third year : 16480 x 80% = 13184
Fourth year : 13184 x 80% = 10547.2
Fifth year : 10547.2 x 80% = 8437.76

Trapezium

parallel sides = 18 cm, 12cm

Height = 8cm

Area of trapezium =

[tex] \frac{1}{2} \times (a + b) \times h[/tex]

[tex] \frac{1}{2} \times (a + b) \times h[/tex]

[tex] \frac{1}{2} \times (18 + 12) \times 8[/tex]

[tex] \frac{1}{2} \times (30) \times 8[/tex]

[tex] \frac{1}{1} \times (15) \times8[/tex]

[tex]120 \: cm ^{2} [/tex]

Therefore, Area of trapezium is [tex]120 \: cm {}^{2} [/tex]

Answer:

Area of Trapezium = 120 cm³

Step-by-step explanation:

Trapezium = 1/2 * (a+b) * h [Formulae]

A & b = Sum of parallel sides

Given that,

Solved:

Therefore,the area of trapezium is 120 sq. cm or 120 cm².

B is correct

1/2x-2>22

Remember 1/2=0.5

We write the equation as

0.5x-2 >22

Collect like terms

0.5x > 22+2

0.5x>24

Divide through by 0.5

X>24/0.5

X>48

Option b

Answer:

B x > 48

Step-by-step explanation:

1/2x -2 >22

Mulitply both sides of the inequality by 2

x - 4 > 44

Move the constant to the right

x > 44+4

Add the numbers

x>48

Answer:

324

Step-by-step explanation:

a

2

a

1

=

12

4

=

3

a

3

a

2

=

36

12

=

3

⇒

common ratio

=

r

=

3

and first term

=

a

1

=

4

no: of terms

=

n

=

9

Sum of geometric series is given by

S

u

m

=

a

1

(

1

−

r

n

)

1

−

r

⇒

S

u

m

=

4

(

1

−

3

9

)

1

−

3

=

4

(

1

−

19683

)

−

2

=

−

2

(

−

19682

)

=

324

12. If the first two terms of the sequence are -3 and 9, the next few terms are

-3 + 9 = 6

9 + 6 = 15

6 + 15 = 21

15 + 21 = 36

and so on. Continuing in this way, you'd find the 16th term to be 4359.

13. Let x be the cost of 1 floop.

31 floops cost less than $40, so 31x < 40 or x < 40/31.

32 floops cost more than $41, so 32x > 41 or x > 41/32.

Equivalently,

41/32 < x < 40/31

and

41/32 ≈ 1.28125

40/31 ≈ 1.29032

which means x = $1.29.

B

To find the area you multiply width times height, here for the bigger rectangle, to find the area you multiply 7*6 and then add that with 6 * x because those are the width and height of the smaller rectangle.

Second part

I believe that Wiliam chose C because he accidentally thought that adding everything was correct. He added 7+6 to get 13 for the bigger rectangle and then for the smaller rectangle decided that to find the area you would add 6 and x.

Answer:

Step-by-step explanation:

a, b and d all represent the combined area of the gardens

(6*7) + (6*x) is equivalent to 6(7+x) and 42 + 6x

Check:

(6*7) + (6*x)

42 + 6x

6(7+x)

42 + 6x

42 + 6x

William chose C because he added the length and width of the vegetable garden (7 + 6 = 13), and then added the length and width of the flower garden (6 + x = 6 + x).

Hope this helps!

It is centered at (h,k) --> (0,0) and has a radius 9

The equation of the circle is

           [tex](x-h)^{2} +(y-k)^{2} =r^{2} \\(x-0)^{2} +(y-0)^{2} =r^{2}\\x^{2} +y^{2} = 9^{2}[/tex]

Hope that helps!