138 cm² = (x + 2) × ( 2x + 3) x 1/2​

Answers

Answer 1

Answer:

Step-by-step explanation:

138 cm² = (x + 2) × ( 2x + 3) x 1/2​

138 cm² = x + 2 ×  2x + ) x 1/2​

138 cm² = x + 4x + x * 0.5

0.5/138 cm² = 6x * 0.5 /0.5

6/69cm²  = 6x/6

x = 11.5

This might be wrong so just take the square root of 138.


Related Questions

Which of the following leading terms would make the expression a perfect square trinomial?
____ −140xy+100y2

A) 49x^2
B) 25x^2
C) 81x^2
D) 64x^2

Answers

A) 49x^2

Because:
(7x-10y)^2 = 49x^2 - 140xy + 100y^2

Tuesday Evaluate the Expression: Use PEMDAS. 80 - 42+8​

Answers

Answer:

30

Step-by-step explanation:

Using BODMAS

*80-50 (42+8)

*30

Which one A, B, C, D ??

Answers

Answer:

A proportion describes the share of one value for a variable in relation to a whole. It is calculated by dividing the number of times a particular value for a variable has been observed, by the total number of values in the population.

So it is B! Mark me brainliest plzz!

Step-by-step explanation:

Answer:

the correct answer would be A

Step-by-step explanation:

brainlest pls

What’s the volume will give brainliest

Answers

I dont know but thanks for your points

Answer:

2,860cm³

Step-by-step explanation:

just multiply all of the numbers.

(-6,4); (6-5)

Slope



Giving branliaist answer to the best one

Answers

Do You want me to graph it for you or what
the slope is m = -3 / 4

12. Solve for x. x = ___________

Answers

Step-by-step explanation:

this is math right what grade is this

Solve the system using linear combination. Show all work.
5x + 3y = 41
3х - 6y = 9

Answers

The answer is (7,2)

-12 > -15
True or False?

Answers

Answer:

t

Step-by-step explanation:

-12 is closer to zero than -15

Answer: True, -12 is closer to 0 than -15. When it comes to negative numbers the number closest to 0 is always the biggest.

A tour company has a boat that sits at most 40 passengers. For a cruise on the Hudson River they charge $12 per adult and $5 per child. They will only take the boat out if they have sold at least $250 worth of tickets. Let a be the number of adults who take the cruise and c be the number of children.

Answers

Answer:the answer is 2

Step-by-step explanation:

Solve the equation for all values of x by completing the square.
x^2+4x-15=0

Answers

Answer:

x  =  ±  √ 19 - 2

In which interval is the median distance

Answers

the median of the given frequency distribution is 470. Since \frac{80}{2} = 40 lies in the cumulative frequency of the class interval 24 – 32, so 24 – 32 belongs to the median class interval. Lower limit of median class interval = ℓ = 24. Hence, the median of the given frequency distribution = 26

This table represents Mindy's check register. Her checking account had a balance of $647.60 on November 20.

Use the information in the check register to determine the balance of Mindy's checking account after the transaction on December 10.

Enter your answer in the box.

Answers

Answer:

910.94

i got it right

Can you help me with my work

Answers

Answer:

all u have to do is count how many 2 there are then put that in and do the same for the 8

Step-by-step explanation:

Answer:

[tex]2^{6} *8^{4}[/tex]

Step-by-step explanation:

Solve the system using the substitution method. -3x – 4y
= 2 x = y - 3

Answers

Answer:

y= −5/4x

heart if it helped!

A polygon has 6 sides. The exterior angles are 80 degrees, 56 degrees, 61 degrees, 43 degrees, 92 degrees, and (2 x) degrees. What is the value of x? x =

Answers

Answer:

14 degrees is right! just wanted to add some credibility(?) idrk. best of luck!

Step-by-step explanation:

The value of x in the polygon that has six sides(hexagon) is 14.

What is a hexagon?

An hexagon is a polygon with six sides.

The exterior angles of the hexagon are as follows:

80°, 56°, 61°, 43°, 92°, and (2x)°.

Therefore,

sum of exterior angle = 360°

Hence,

80 + 56 + 61  + 43 +  92 + 2x = 360

332 + 2x = 360

2x = 360 - 332

2x = 28

x = 28 / 2

x = 14

learn more on hexagon here: https://brainly.com/question/15902950

What is the volume of this solid figure made with cubes

Answers

Answer:

15

Step-by-step explanation:

three times five = fifteen and height is 1

Answer:

15

Step-by-step explanation:

multiply the length x width x height

Find the distance between points B and C on the graph. A) 5 B) 17 C) 5 D) 34

Answers

Answer: 3 to the right 5 going up i hope that can help a little bit

Step-by-step explanation: plz make brainly

Answer:

d

Step-by-step explanation:

took test

If you can these questions hElp
I think 7 is B but am not 100% sure

Answers

Answer:

7. Can't see the triangle

8. F

9. D

Step-by-step explanation:

8.  [tex]15*\frac{1}{4} = 3\frac{3}{4}[/tex]      [tex]16*\frac{1}{4} =4[/tex]    

9.  An obtuse angle is any angle bigger than [tex]90^{o}[/tex] (right angle) but smaller than [tex]180^{o}[/tex] (reflex angle)

The acceleration (in m/s/s) of a body is directly proportional to the force (in N for newton) acting on the body. If a certain body accelerates at 10 m/s/s when subjected to a force of 3 N, what will the acceleration be under a force of 8 N??

Answers

Answer:

26.667

Step-by-step explanation:

Force is directly proportional to mass and acceleration.

So Let's first bring the parameters.

F=3N, A=10m/s M=?

F=ma:.

3=Mx10,. 3=10M

M=3/10 M= 0.3

So we will use that to find the acceleration of force 8N.

F=Ma:. 8=0.3xa

8=0.3a

A=8/0.3

A=26.667.

Andrew is downloading photos from his camera’s memory cards. He downloaded 2,145 megabytes (MB) from a total of 250 normal-quality photos and 100 best-quality photos from his smaller memory card. From the larger memory card, he downloaded 6,330 MB from a total of 500 normal-quality photos and 400 best-quality photos. The graph shows a system of equations representing the two downloads. How many MB is a photo of normal quality and how many MB is a photo of best quality?

Answers

Answer:

it is c

Step-by-step explanation:

lkhbkgbigligi;g;og

What is 2x + 5 + x − 6 + 3x =?

Answers

2x + 5 = 7x
7x + x = 8x
8x - 6 = 2x
2x + 3x =5x
I believe this is the answer

Anyone know how to answer this question

Answers

Answer:

x²+y²=225

Step-by-step explanation:

when centered at the origin the equation of a circle is x²+y²=r²

we are given x and y so 9²+12²=r²

[tex]r^{2} =9^{2} +12^{2}\\ =81+144\\ =225[/tex]

Nick needs to raise at least $320 for his trip. He has $80 saved already, and he makes $40 per yard that he mows. Write and solve an inequality to solve for how many yards, "x," Nick must mow to earn the money.

Answers

Answer: Nick must now at least 6 yards.

Step-by-step explanation:

Since Nick has $80 saved already, and he makes $40 per yard that he mows, thus can be put up in an equation as:

= 80 + 40y

where y = number of yards

Since Nick needs to raise at least $320 for his trip, the equation to solve this will be:

80 + 40x ≥ 320

40x ≥ 320 - 80

40x ≥ 240

x ≥ 240/40

x ≥ 6

Therefore, Nick must now at least 6 yards.

Which is the most accurate way to estimate 66% of 46?

A: 2/3 x 47
B: 1/3 x 45
C: 1/3 x 47
D: 2/3 x 45

Answers

Answer:

30 Don't use your calculator.

Step-by-step explanation:

This is an estimation question, so you have to throw your calculator out of your reach.

You have to know that 66% is nearly 2/3 So the correct answer cannot be B or C

It must be A or D.

The problem is that 3 doesn't go into 46 so you have to change it to something that is divisible by 3. Of the numbers given, the best one is 45

2/3 * 45 = 2 * 15 = 30

How close is that (remember you have to give 30 as your answer)?

The actual answer is 30.36 which makes your estimate very good.

El área de un rectángulo es 600 cm2 . Calcula las dimensiones del rectángulo sabiendo que su perímetro es 100 metros.

Answers

Answer:

Step-by-step explanation:

The area of ​​a rectangle is 600 cm2. Calculate the dimensions of the rectangle knowing that its perimeter is 100 meters.

The formula for the area of a triangle =

Length × Width = 600 cm²

LW = 600

W = 600/L

Perimeter of a rectangle = 2L + 2W = 100m

2L + 2W = 100

we substitute

2L + 2(600/L ) = 100

2L + 1200/L = 100

Multiple all through by L

2L² + 1200 = 100L

2L² - 100L + 1200 = 0

We factorise

2L² - 60L - 40L + 1200= 0

Las dimensiones del rectángulo serían:

Longitud = 30m

Ancho = 20m

Halla el largo y el ancho

Dado que,

Área del rectángulo = 600[tex]m^2[/tex]

Sabemos,

Área del rectángulo = l × b

entonces,

l × b = 600[tex]m^2[/tex]  

⇒ l = 600/b ...(i)

A continuación, tenemos,

Perímetro = 100m

Lo sabemos,

Perímetro del rectángulo = 2(l + b)

⇒ 100 = 2(l + b)

al poner (i), tenemos,

⇒ [tex]100/2 = (600/b + b)[/tex]

⇒ [tex](600 + b^2)/b = 50[/tex]

al resolver esto, obtenemos;

[tex]b^2 + 600 = 50b[/tex]

⇒ [tex]b^2 - 50b + 600 = 0[/tex]

⇒ [tex]b^2 - 30b - 20b + 600= 0[/tex]

⇒ [tex]b(b - 30) - 20(b - 30) = 0[/tex]

⇒ [tex](b - 20) (b - 30)[/tex]

∵ [tex]b = 20 m, b = 30m[/tex]

poniendo el valor de b, podemos encontrar:

[tex]l = 600/20[/tex]

∵ [tex]l = 30 m[/tex]

∵ Longitud = 30m

Ancho = 20m

Learn more about " rectángulo" here:

brainly.com/question/17048958

help pls question/problem in image ​

Answers

Answer:

It's rotated around (0,0)

Step-by-step explanation:

Find area of square
Pls help

Answers

Step-by-step explanation:

Area of square

[tex] {s}^{2} [/tex]

[tex]6.7 \times 6.7 = 44.89 {mm}^{2} [/tex]

Oi lend a hand here? Math isn't my thing :P​

Answers

x is less than or equal to 5, really simple

Answer:

C

Step-by-step explanation:

Sarah uses 2 eggs for each batch
of 12 muffins that she bakes. How
many muffins can she bake with a full
carton of 12 eggs?

Answers

Answer:

I think it would be 72

Step-by-step explanation:

You would have to divided 2 by 12, which is 6. Then, you would have to multiply 6 by 12, which i s 72. I hope this is right, if not I'm sorry. I really hoped this helped :D

Expand and Simplify: (2x-1)(3x-2)

Answers

Answer:

6x^2-7x+2

Step-by-step explanation:

Given data

We have the expression

(2x-1)(3x-2)

First let us open the bracket

2x(3x-2)-1(3x-2)

6x^2-4x-3x+2

Collect like terms

6x^2-7x+2

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