18. 9 decreased by twice a number is equal to 9. 9. What is the number?​

Answers

Answer 1

Twice means two times

18.9 - 2x = 9.9

18.9 -18.9 -2x=9.9 - 18.9

-2x=9.9 - 18.9

(-2x= -9) divide both sides by negative two

-2x/-2 = -9/-2

x=4.5


Related Questions

What is the measure of ∠ABD?

Answers

Answer: 114 degrees

Step-by-step explanation:

Bert's cab company charges $1.00 plus an additional $3.00 per mile for a ride. Madeline's cab company charges $3.00 plus an additional $2.00 per mile for a ride. At what distance, in miles, will the cost be the same for both companies?

PART A
Answer: _____

PART B
Which cab driver's charge will be less for a ride that is 10 miles in distance?
Answer choices: Bert's or Madeline's?

Please help! :D

Answers

Answer:

Step-by-step explanation:

PART A

Answer: no they will not be the same

PART B

Which cab driver's charge will be less for a ride that is 10 miles in distance?

Madeline's is cheaper

Bert's cab company costs $31 and Madeline's cab company costs $23

Write your own example of a biased question. I need this ASAP. Pls

Answers

Answer:

An example would be: Do you like cats or dogs more?

Step-by-step explanation:

The example for the biased survey question is : How awesome is the product?

What is a biased survey question?

A survey question is biased if it is phrased or formatted in a way that skews people towards a certain answer.

The question : - How awesome is the product?

The Fixed: How would you rate this product?

The examples of biased survey questions listed above contains a judgment, implying that the product is “awesome,” The corrected phrasing, on the other hand, is more objective, and contains no insinuations.

Hence, the example for the biased survey question is : How awesome is the product?

Learn more about biased survey question, click;

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I need help quickly!

What are the points using the equation 50x+y=-100?

Answers

Answer:

Equations .

0 + 5

Step-by-step explanation:

#BrainliestBunch

can someone pls help me with this

Answers

I want to say it’s 8.66 or 17.32 if I am wrong I am terribly sorry I haven’t been taught this since 8th grade have a great day I hope you get it right !

what is the exact and approximate area of a circle with a diameter of 6 feet? For the approximate area, round your answer to the nearest tenths place

Answers

Answer:

Exact: 9.42

Approx: 9

Step-by-step explanation:

The area of a circle is pi*radius^2 (pi=3.14 r=radius ^2= power of 2/squared)

The diameter is two times the radius. So, we need to divide the diameter by two for the first step of solving this.

6/2=3

Now, we know the radius is 3.

Let's square it:

3^2= 3*3

3*3=9

Now, the last step is to multiply it by pi (3.14)
3.14*3=9.42

There we go! The area is 9.42 feet!

Write As an equation

Answers

Answer:

x + 8 = 20

Step-by-step explanation:

Using the keywords;

'more than' (addition)

'a number' which we can consider a variable

and 'equals'

Answer: 8 + x =20

Step-by-step explanation: eight more than a number means 8 more than meaning plus, a number. So this is saying that 8 more than what ever that number is, will equal 20. We say x in the equation because x can be see as “the number”.

x = “the number” = 12

This is because 8 more than 12 is 20...

So 8 more than a number = 8 + x = 20

What is the value of t?

Answers

Answer:

43

Step-by-step explanation:

Halpppppppp
-
-
-
-
-

Answers

Step-by-step explanation:

x = number of t- shirts

the function for the incurring costs is

c = 5x + 45

the function for the accumulating sale is

s = 20x

the break even point is when both functions deliver the same result.

20x = 5x + 45

15x = 45

x = 3

c = s = 5×3 + 45 = 20×3 = $60

they need to sell 3 t-shirts to break even.

at that point they will have incurred $60 in costs and collected the same amount in sales.

7 > −2; Subtract 7 from both sides.

Answers

[tex]7 > -2\\7 -7 > -2-7\\0 > -9[/tex]

Hope that helped!

A plane drops 300 feet, rises 240 feet, drops 180 feet, and rises 130 feet. What is the height of the plane now relative to its initial height?

Answers

Answer:

it is IH - 110 ft

Step-by-step explanation:

The plane height is down 110 feet from its initial height.

What is subtraction?

Subtraction is mathematic operation. Which is used to remove terms or objects in expression.

Let x be the initial height of the plane.

Then according to question;

if drop down means height in negative term and rise up means height in the positive term.

Then,

the height is

= x -300-180+240+130

= x-110

Therefore, down 110 feet is the height of the plane now relative to its initial height.

To learn more about the subtraction;

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Solve for m please quickly

Answers

(1,2)(2,5)

Slope:-

[tex]\\ \rm\rightarrowtail m=\dfrac{5-2}{2-1}[/tex]

[tex]\\ \rm\rightarrowtail m=\dfrac{3}{1}[/tex]

[tex]\\ \rm\rightarrowtail m=3[/tex]

PLEASE HELP THIS IS MY 3RD TIME ASKING THIS I WILL GIVE BRAINLIEST PLEASE I REALLY NEED HELP
Which statements describe how the British controlled their colonies? Choose four correct answers.

A:After the Boer War, the Boers ruled themselves in South Africa.
B:Wars affected the ways Britain ruled its colonies.
C:Britain granted equal rights to all Africans.
D:Britain allowed Africans to benefit from their natural resources.
E:An independent South Africa was formed.
F:Britain did not protect the rights of black Africans.

Answers

Answer: A B E F

Step-by-step explanation:

i’m pretty sure it’s right

The answer to you’re question is A B E F

What is the slope of a line that passes through (0, 6) and (9, 6)?

Answers

Horizontal lines have a slope of zero

Answer:

slope is 0(this is just the slope)

intercep in y is (0,6)

if you write it in y=mx+b is 6(this is slope intercept)

30 POINTS!!
2/5v = 4

v = 10
True or False?

Answers

Answer:

its true

Step-by-step explanation:

[tex]\frac{2}{5} * \frac{10}{1}=\frac{20}{5}[/tex]
[tex]\frac{20}{5} = \frac{4}{1} = 4[/tex]

have a good day.

Answer:

True.

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Multiply the reciprocal of the fraction to both sides to isolate the variable, v.

The reciprocal in math is described as the quantity that is multiplied that will result in 1. In this case, you will multiply 5/2 to both sides of the equation:

[tex]\frac{2}{5}v = 4\\ \\(\frac{5}{2})\frac{2}{5}v = 4 * (\frac{5}{2})\\[/tex]

[tex]v = \frac{4 * 5}{2} = \frac{20}{2} = 10\\ v = 10[/tex] (True).

In this case, v = 10 will work to solve the given equation, and so it is true.

~

Consider the two-way table below. A 4-column table has 3 rows. The first column has entries A, B, total. The second column is labeled C with entries 15, 9, 24. The third column is labeled D with entries 21, 25, 46. The fourth column is labeled Total with entries 36, 34, 70. Find P(B|C). P(B|C) = StartFraction 9 Over 34 EndFraction = 0. 26 P(B|C) = StartFraction 9 Over 24 EndFraction = 0. 38 P(B|C) = StartFraction 9 Over 70 EndFraction = 0. 13 P(B|C) = StartFraction 9 Over 58 EndFraction = 0. 16.

Answers

The probability is the ratio of the favorable event to the total number of events. Then the P(B|C) is 0.38. Then the correct option is B.

What is probability?

Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen.

According to the condition, the table will be

                      C                   D               Total

  A                 15                  21                 36

  B                  9                  25                34

Total              24                 46                70

The probability of the (BIC) will be

[tex]\rm P(B|C) = \dfrac{9}{24}\\\\\\P(B|C) = 0.375 \approx 0.38[/tex]

The P(B|C) is 0.38. Then the correct option is B.

More about the probability link is given below.

https://brainly.com/question/795909

prove that the statement is true
AC ≅DB

Answers

Answer:

Can't answer with out the picture

Step-by-step explanation:

After 24 years, Rama will be 5 times as old as he is now . Find his Present Age .​

Answers

Question :-

After 24 years, Rama will be 5 times as old as he is now . Find his Present Age .

Answer :-

Present Age of Rama is 6 Years .

[tex] \rule {180pt} {2pt} [/tex]

Given :-

After 20 years, Rama will be 5 times as old as he is Now .

To Find :-

Present Age of Rama = ?

Solution :-

As per the provided information in the given question, we have been given that After 20 years, Rama will be 5 times as old as he is now. And, we have been aksed to calculate Present Age of Rama.

Let :-

The Present Age of Rama be x .

Therefore :-

[tex] \longmapsto \: \: \:\sf{x \: + \: 24 \: = \: 5x} \\ [/tex]

[tex] \longmapsto \: \: \sf{24 \: = \: 5x \: - \: x} \\ [/tex]

[tex] \longmapsto \: \: \sf{24 \: = \: 4x} \\ [/tex]

[tex] \longmapsto \: \: \sf{x \: = \: \dfrac{24}{4} } \\ [/tex]

[tex] \longmapsto \: \: \textbf{ \textsf{x \: = \: 6 }} [/tex]

Hence :-

Present Age of Rama = 6 years .

[tex] \underline {\rule {180pt} {4pt}} [/tex]

Given :

After 24 years, Rama will be 5 times as old as he is now .

To Find :

Rama's Present Age .

Solution :

Let us assume the present age of Rama as x years .So, 5 times of his age will be 5x years.

Now,

According to the Question :

[tex]{ \longrightarrow {\qquad {\sf 5x = x + 24 }}}[/tex]

Subracting x from both sides we get :

[tex]{ \longrightarrow {\qquad {\sf 5x - x= x - x+ 24 }}}[/tex]

[tex]{ \longrightarrow {\qquad {\sf 4x= \cancel{x} \: \: \cancel{- x}+ 24 }}}[/tex]

[tex]{ \longrightarrow {\qquad {\sf 4x= 24 }}}[/tex]

Dividing both sides by 4 we get :

[tex]{ \longrightarrow {\qquad {\sf \dfrac{4x}{4} = \dfrac{24}{4} }}}[/tex]

[tex]{ \longrightarrow {\qquad \pmb {\bf x= 6 }}}[/tex]

Therefore,

Rama's present age is 6 years.

if (4x - 58) + x = 2, what is x??

Answers

4x+x-58=2
5x=58+2
5x=60
x=12

First, combine like terms:

4x -58 +x =2 can be rewritten as 5x - 58 =2

Next, isolate the x on one side of the equation by adding 58 to both sides:

5x = 60

Now, isolate x again by dividing by 5 on both sides of the equation:

Answer: x = 12

Samantha spent 40 minutes on homework. Sixty percent of that time was spent on language arts. How many minutes were spent on language arts?

A 2-column table with 10 rows titled Time Spent. Column 1 has entries 10 percent, 10 percent, 10 percent, 10 percent, 10 percent, 10 percent, 10 percent, 10 percent, 10 percent, 10 percent. Column 2 has entries 4 minutes, 4 minutes, 4 minutes, 4 minutes, 4 minutes, 4 minutes, 4 minutes, 4 minutes, 4 minutes, 4 minutes.

Answers

Answer:

24 Minutes

Find 60 percent of 40.

Percent means over 100

,so 60% = 60/100 or 0.6

Multiply that by 40 to find 60% of it:

40 * 0.6 = 24

A Samantha spent percent 24 minutes on language arts out of the 40 minutes dedicated to her homework.

To find the number of minutes Samantha spent on language arts,  to calculate 60% of the total time  spent on homework.

Samantha spent a total of 40 minutes on homework.

To find 60% of 40 minutes, multiply 40 by 0.60 (since 60% is equivalent to 0.60):

60% of 40 = 0.60 × 40 = 24 minutes

Therefore, Samantha spent 24 minutes on language arts.

Regarding the 2-column table provided, it appears to be unrelated to the problem and does not directly provide information about Samantha's homework time. It contains entries for "Time Spent" in percentages and corresponding minutes, but these percentages and minutes do not seem to relate to the given problem.

To know more about percent here

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Which value for x makes the sentence true?

3/4x + 4 = 7

Answers

Answer:

(x) = 4

Step-by-step explanation:

 3/4 (x) + 4 = 7

 3/4 (4) + 4 = 7

0.75 (4) + 4 = 7

          3 + 4 = 7

                7 = 7

00:00
Some one help me out

In Toss-N-Turn at the County Fair, contestants flip a fair coin and then spin the pointer of a spinner with seven equal sections, numbered
1-7. Contestants win if the coin lands heads up and the pointer lands on an even number.
? Explain.
If Paulina wants to win a prize, should she play Toss-N-Turn or a different game that has a theoretical probability of winning of
1-5? explain. ​

Answers

Answer:

[tex]thats \: the \: answer \: pls \: brainliest[/tex]

Step-by-step explanation:

happy to help u

pls mark me as brainlist

An object traveling with an initial constant speed along the y-axis begins to decelerate 4 kilometers before reaching a reference position. Its position is given by the function
y
=

t
2
+
3
t

4
, where t is the time in seconds. Which value is equal to the average rate of change of the function over the interval
(
0
,

4
)
to
(
2
,

2
)
?

Answers

The value that is equal to the average rate of change of the function over the interval is equal is 1 m/s

The average rate of change

Given the position of the object expressed as:

y = -t^2 + 3t - 4

In order to calculate the value that is equal to the average rate of change of the function over the interval (0, -4) and (2, -2), we will determine the slope of these two coordinates as shown;

Rate of change = -2-(-4)/2-0
Rate of change = -2+4/2
Rate of change = 2/2

Rate of change = 1 m/s

Hence the value that is equal to the average rate of change of the function over the interval is equal is 1 m/s

Learn more on rate of change here; https://brainly.com/question/8728504

100 POINTS
A scientist uses data from satellite images to draw conclusions about a region. After analyzing the data collected, the scientist issues a drought warning for the region.

Which data best supports the scientist’s decision to issue the warning?

(1 point)

New camping and recreational sites are changing the region’s ecosystem.

Air quality tests indicate an increase in toxins.

Large areas of forest are being cleared for logging.

Reservoirs and lake levels continue to drop significantly.

Answers

Which data best supports the scientist’s decision to issue the warning?

D) Reservoirs and lake levels continue to drop significantly.

Answer:

slay

Step-by-step explanation:

Find the missing variables

Answers

Answer:

x=5;y=12

Step-by-step explanation:

Hope this answer helps you

Answer:

1st option

Step-by-step explanation:

the figure is a kite

the horizontal diagonal bisects the vertical diagonal , then

x = 5

The diagonals are perpendicular , so using Pythagoras' identity

x² + y² = 13²

5² + y² = 13²

25 + y² = 169 ( subtract 25 from both sides )

y² = 144 ( take square root of both sides )

y = [tex]\sqrt{144}[/tex] = 12

22x+100=25x+70
Find the X

Answers

Answer:

X=10

Step-by-step explanation:

Step 1: Subtract 100 from both sides of the equation.

Step 2: Simplify.

Step 3: Subtract 25x from both sides of the equation.

Step 4: Simplify.

Step 5: Divide both sides of the equation by the same term.

Step 6: Simplify.

X=10 :)

Answer:

x = 10

Step-by-step explanation:

In this question we are given an equation that is 22x + 100 = 25x + 70. And we are asked to find the value of x .

Solution : -

[tex] \longmapsto \:22x + 100 = 25x + 70 [/tex]

Step 1 : Subtracting 100 from both sides :

[tex] \longmapsto \:22x + \cancel{100} - \cancel{100} = 25x + 70 - 100[/tex]

On further calculations we get :

[tex] \longmapsto \: 22x = 25x - 30[/tex]

Step 2 : Subtracting 25x from both sides :

[tex] \longmapsto \:22x - 25x = \cancel{ 25x} - \cancel{25x }- 30[/tex]

On further calculations we get :

[tex] \longmapsto \: \cancel{- }3x = \cancel{ - }30[/tex]

Step 3 : Dividing with 3 on both sides :

[tex] \longmapsto \: \frac{ \cancel{3}x}{ \cancel{3}} = \cancel{\frac{30}{3} }[/tex]

On further calculations we get :

[tex] \longmapsto \: \purple{\boxed{ \frak{x = 10}}}[/tex]

Henceforth , value of x is 10 .

Verifying : -

We're verifying our answer by substituting value of x in given equation . So ,

22x + 100 = 25x + 70

22 ( 10 ) + 100 = 25 ( 10 ) + 70

220 + 100 = 250 + 70

320 = 320

L.H.S = R.H.S

Hence, Verified.

Therefore, our value for x is correct .

#Keep Learning

Mai received and spent money and the following ways last month. For each example write a sign number to represent the change in money from her perspective.


A. Her grandmother gave her $25 in a birthday card.


B. She earned $14 by babysitting.


C. She spent $10 on a ticket to a concert.


D. She donated three dollars to a local charity.


E. She got two dollar interest on money that was in her savings account

Answers

By knowing how to use positive numbers and negative numbers, we will see that the answers are:

A)  C = $25B) C = $14C) C = -$10D) C = -$3E) C = $2

How to represent each change?

By standard notation, if May wins money, then we represent this with a positive number.

While if she pays or has a debt, we represent the change with a negative number (because now she has less money than before).

A) She receives $25, so the change is:

C = $25

B) She earns $14, so the change is:

C = $14

C) She spends $10, so now she has $10 less than before, the change is:

C = -$10

D) She donated $3, so the change is:

C = -$3

E) She gots $2, then the change is:

C = $2.

If you want to learn more about money changes, you can read:

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The ratio of three numbers are 4:5:3. The sum of the numbers is 84. What are the 3 numbers?

Answers

Answer:

if 4:5:3=84 you start by adding (4+5+3=9)....so 9 equals to 84 what about (4) cross multiply....you will 4=28 .....if 9 =84 what about 5 cross multiply.....you will get 35....if 9 =84 what about 3

cross multiply.....you will get 21 so the numbers are.

4=38

5=35

3=21

Help me with number three

Answers

Answer:

Volume: 16.76 cm^3

Surface area: 40.67 cm^2

Step-by-step explanation:

To find volume, you use the formula V=πr^2*h/3

To find the surface area you use formula A=πr(r+√h^2+r^2)

Answer:

V = 16.76

Surface Area = 40.67

Step-by-step explanation:

V=πr2h

A=πrl+πr2

Which set of angle measures CANNOT be the angle measures of a triangle?


A 120.2°, 30.8°, 29°

B 2°, 2°, 176°

C 79°, 20°, 81°

D 60°, 61°, 60°

Answers

Answer:

D

Step-by-step explanation:

As stated elsewhere, two conditions must be met.

There are 3 angles in a triangle.They must add to 180

Answers A B and C all meet these 2 conditions. It is only D that gives you the problem.

It adds to 181 which is not 180. 180 is written in stone, A triangle cannot have 179 degrees, nor can it have 181 degrees.

It must have 180.

D has 181 degrees. It cannot be a triangle.

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