Helpp me with question 18.

Answer:

-3

Step-by-step explanation:

7x+9=5x+3

2x+9=3

2x=-6

x=-3

Answer:

Step-by-step explanation:

7x +9 = 5x +3

combine like terms

7x - 5x = 3 - 9

2x = -6

x = -6/2

x = -3

proof:

7x +9 = 5x +3

7(-3) +9 = 5(-3) +3

-12 = -12  ---- ok

Answer:

The simplified ratio is 19:9.

Step-by-step explanation:

Answer:

19:9

Step-by-step explanation:

First, make it a fraction. 95/45. Then simplify by 5.

Answer:

B) 36-in

Step-by-step explanation:

i will not bore you with the explanation ;w;

Answer:

Yes.

Step-by-step explanation:

Always.

Answer:

Equation: $7 + $1.25t = $43.25

Solving:

$7 + $1.25t = $43.25

$1.25t = 36.25

$1.25t = 36.25

t = 29

So the answer is 29 minutes.

Answer:

Explained below.

Step-by-step explanation:

The (1 - α)% confidence interval for the population mean is:

[tex]CI=\bar x\pm z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}[/tex]

The margin of error for this interval is:

[tex]MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}[/tex]

The factors affecting the MOE are:

Since the population standard deviation is not provided it is obvious the sample standard deviation is used to estimate the value of σ.

On increasing the value of σ the MOE will also increase.

As the sample size is inversely proportional, increasing the sample size by a factor of 4 will reduce the margin of error by half. But since σ is also increasing there are two factors affecting the MOE together.

Therefore reducing the MOE by more than half the original value.

Let's see what to do buddy...

[tex] - 3(4 - 2x) = 4 - 2x[/tex]

Subtract the sides of the equation minus( 4 - 2x ) :

[tex] - 3(4 - 2x) - (4 - 2x) = 0[/tex]

Factoring ( 4 - 2x ) :

[tex](4 - 2x)( - 3 - 1) = 0[/tex]

[tex](4 - 2x)( - 4) = 0[/tex]

Divided the sides of the equation by -4

[tex]4 - 2x = 0[/tex]

Subtract the sides of the equation minus 4

[tex] - 2x = - 4[/tex]

Negatives simplified.

[tex]2x = 4[/tex]

Divided the sides of the equation by 2

[tex]x = \frac{4}{2} \\ [/tex]

[tex]x = 2[/tex]

_________________________________

And we're done...

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

Answer:

x^3-6

Step-by-step explanation:

cube the variable and subtract 6

Answer:

Step-by-step explanation:

there were 78 people all together because 74-22=52 because it was 52 people altogether after the 26 got off and the 22 got on so 52+26=78 so THE ANSWER IS 78

Answer:

(a) 0.0000245

(b) 0.000025

Step-by-step explanation:

The complete question is:

Suppose that a computer chip company has just shipped 10,000 computer chips to a computer company. Unfortunately, 50 of the chips are defective. (a) Compute the probability that two randomly selected chips are defective using conditional probability. (b) There are 50 defective chips out of 10,000 shipped. The probability that the first chip randomly selected is defective is  50 /10,000  = 0.005.  Compute the probability that two randomly selected chips are defective under the assumption of independent events.

Solution:

(a)

In this case we need to compute the conditional probability of selecting two defective chips, i.e. the selection of the second defective chip is dependent on the first defective chip.

The probability of selecting the first defective chip is:

[tex]P(1D)=\frac{50}{10000}=0.005[/tex]

Now there are 9999 chips left and 49 defective chips among them.

The probability of selecting the second defective chip is:

[tex]P(2D)=\frac{49}{9999}=0.0049[/tex]

Compute the probability that two randomly selected chips are defective using conditional probability as follows:

P (Two defective chips) [tex]=P(1D)\times P(2D)=0.005\times 0.0049=0.0000245[/tex]

Thus, the answer is 0.0000245.

(b)

Compute the probability that two randomly selected chips are defective under the assumption of independent events as follows:

The above statement implies that the selection was done with replacement.

The probability is:

P (Two defective chips) [tex]=P(1D)\times P(2D)[/tex]

                                      [tex]=\frac{50}{10000}\times \frac{50}{10000}\\\\=0.005\times 0.005\\\\=0.000025[/tex]

Thus, the probability that two randomly selected chips are defective under the assumption of independent events is 0.000025.

Answer:

9 < x < 0

Step-by-step explanation:

from 0 to 9 i think

Answer:

No

Step-by-step explanation: Try the vertical line test. If the line goes directly through the angle or shape, it's not a function. Let me know if you want an example.

I've attached an image. This rule applies to every angle.

Answer:

{-3, -1, 1}

Step-by-step explanation:

Zeros refer to x-intercepts. X-intercepts are x values when y = 0. You can tell where they are by looking at where the line passes the x-axis.

Therefore, {-3, -1, 1} are the zeros.

Length of wood Samuel needs to build a fence = 346 feet

Length of each piece of wood = 15 feet

Number of wood pieces he will have with him :-

[tex] = \frac{346}{15} [/tex]

Samuel will need 23 pieces of wood .

Length of wood Theresa needs to build a fence :-

= 346 × 2

= 692 feet wood

Number of wood pieces Theresa will need :-

[tex] =\frac{692}{15} [/tex]

[tex] = 42 \: pieces \: of \: wood[/tex]

Therefore , Samuel needs 23 pieces of wood and Theresa needs 42 pieces of wood .

Answer:

The answer to your problem is 10000

Answer: 11,000

Step-by-step explanation:

Rounding to the nearest thousand first gives us,

4,000+1,000+4,000+2,000=11,000.

Answer:

c

Step-by-step explanation:2000/12.23

Answer:

15

Step-by-step explanation:

f(x)=6x-9

so nw x value give 4,

substitute x value with 4

f(4)=6(4)-9

=19

A function assigns the values. The value of the f(4) will be equal to 15.

A function assigns the value of each element of one set to the other specific element of another set.

For the given function f(x)=6x-9, therefore, the value of f(4) can be written as,

f(x) = 6x - 9

f(4) = 6(4) - 9

f(4) = 24 - 9 = 15

Hence, the value of the f(4) will be equal to 15.

Learn more about Function:

https://brainly.com/question/5245372

#SPJ2

Answer:

(7,-2)

Step-by-step explanation:

6+8÷2=7

1-5=-4÷2=-2

Answer:

20 to 4

Step-by-step explanation:

is the answer because it is the amount of students to adults.

Answer:

1,0

Step-by-step explanation:

No need to expand look at the roots of the brackets.

(x-1)=0

x=1

x^2 and -9x have roots 0

Think of it as whatever sets the expression to 0.

Answer:

-2.5

Step-by-step explanation:

The slope of a line can be found by dividing the rise over the run between two points. The rise is the difference between the y-values, and the run is the difference between the x-values. For both, the value with the greater x-value comes first as you are seeing how much it has changed from the first value to the the other.

Let's use the first two points to find the slope: (0,9), (2,4)

(2,4) has the greater x-value, so the rise between the points would be -5, as 4 - 9 = -5

The run would be 2, as 2-0 = 2.

Therefore the slope would be: -5/2 = -2.5

Hope this helped!

Answer:

Step-by-step explanation:

At a pay of 12$ per hour at 8 hours a day you will make 94$ a day or 658$ a week.

Answer:

The answer is C

Step-by-step explanation:

Answer:

9,420 colors making exactly 1 car of each color exist

Step-by-step explanation:

Since there is no additional information, such as the number of colors we have to assume the maximum. Since there are over 10 million colors that exist and there is at least one car of each color, then there would be a maximum of 9,420 colors making exactly 1 car of each color exist. On the other end of the spectrum would be 2 colors making 4,710 cars of each color.

The number of different possible colors of vehicle can be found using the relation

[tex] \frac{9240}{c} [/tex]

The number of different colors possible :

The number of different possible colors can be obtained using the expression :

[tex] \frac{9240}{c} [/tex]

Learn more :https://brainly.com/question/18109354

Answer:

3.95%

Step-by-step explanation:

An interest-bearing account paying a stated nominal or annual interest rate of 3.880% compounded monthly, would translate to an Annual Percentage Yield (APY) or Effective Annual Rate (EAR) of 3.95%. This means that $100.00 will grow to $103.95 ($103.95 rounded) after one year.

Answer:

See below.

Step-by-step explanation:

  Statements:                                  Reasons:

1) ∠1≅∠4                                        :Given

2) The two lines are parallel       :Alternate Exterior Angles Converse

3) ∠3≅∠2                                      :Alternate Interior Angles Are Congruent

Answer:

given: 1=4      prove: 3=2

statement         reasons

1=4                    given

1=2                    vertical angles

3=4                   congruent angles

therefore:       3=2

Step-by-step explanation: