What is this expression?

Answer:

x=-3/4n

Step-by-step explanation:

first, remove the parenthesis.

-3(x + n) = x

-3x -3n = x

collect like terms.

-3x - x = 3n

divide both sides.

-4 = 3n

and therefore,

x= -3/4n

Answer:

c

Step-by-step explanation:

because i said so

Answer:

-1/2

Lcd=10

-4x2/5x2+3/10

−

​10

​

​8

​​ +

​10

​

​3

​​

−8+3/10

-5/10

-1/2

​​

Answer:

let he takes x ride in total

1

$15 + 1.25x = $40

on solving

1.25x = 40 -15

1.25x=25

x=25/1.25 = 20

He can go on 20 rides.

Step-by-step explanation:

Answer:

Greater than 90 miles

Step-by-step explanation:

Use the triangle inequality theorem, since the cities form a triangle.

This theorem states that the sum of any 2 sides of a triangle has to be greater than the length of the third side.

We can find what the length of the third side has to be greater than by subtracting 97 from 187:

187 - 97

= 90

So, the distance has to be greater than 90 miles.

Recall that

sin²(θ) + cos²(θ) = 1

for all θ, and given that cos(θ) < 0, we find that

cos(θ) = -√(1 - sin²(θ)) = -√(1 - (2/5)²) = -√(21)/5

Now,

csc(θ) = 1/sin(θ) = 1/(2/5) = 5/2

and

cot(θ) = cos(θ)/sin(θ) = (-√(21)/5)/(2/5) = -√(21)/2

Answer:

C

C

C

THE MONEY

Step-by-step explanation:

Answer:

The answer is 2/3

Step-by-step explanation:

2/3 = 0.6666666666... with it repeating forever

Answer:

2/3

Step-by-step explanation:

The answer you selected is correct.

The decimal form of 2/3 is 0.66666666 (it repeats forever), unlike the other three:

3/4 = 0.75

4/5= 0.80

7/8= 0.875

This is the same as saying x = 3 and x = 7.

========================================

Work Shown:

Plug x = 3 into f(x)

f(x) = (1/2)*|x-3| + 3

f(3) = (1/2)*|3-3| + 3

f(3) = 0.5*|0| + 3

f(3) = 0.5*0 + 3

f(3) = 0 + 3

f(3) = 3

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

Plug x = 5 into f(x)

f(x) = (1/2)*|x-3| + 3

f(5) = (1/2)*|5-3| + 3

f(5) = 0.5*|2| + 3

f(5) = 0.5*2 + 3

f(5) = 1 + 3

f(5) = 4

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

Plug x = 7 into f(x)

f(x) = (1/2)*|x-3| + 3

f(7) = (1/2)*|7-3| + 3

f(7) = 0.5*|4| + 3

f(7) = 0.5*4 + 3

f(7) = 2 + 3

f(7) = 5

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

Plug x = 3 into g(x)

g(x) = sqrt(x-3) + 3

g(3) = sqrt(3-3) + 3

g(3) = sqrt(0) + 3

g(3) = 0 + 3

g(3) = 3

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

Plug x = 5 into g(x)

g(x) = sqrt(x-3) + 3

g(5) = sqrt(5-3) + 3

g(5) = sqrt(2) + 3

g(5) = 1.414214 + 3

g(5) = 4.414214 ..... which is approximate

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

Plug x = 7 into g(x)

g(x) = sqrt(x-3) + 3

g(7) = sqrt(7-3) + 3

g(7) = sqrt(4) + 3

g(7) = 2 + 3

g(7) = 5

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

To summarize everything, refer to the table below.

The rows highlighted in yellow refer to when f(x) = g(x)

This happens twice when x = 3 and x = 7

If x = 3, then f(x) = g(x) = 3

If x = 7, then f(x) = g(x) = 5

Therefore, x = 3 and x = 7 are two solutions to f(x) = g(x)

Incomplete question. The missing question read;

Which of the following best describes why a matched-pairs design is an appropriate design for the investigation?

a. Each graduate was randomly assigned to one method.

b.  The law schools were randomly selected.

c.  Each method served as a block.

d.  The sample size was less than 30.

e.  Each law school served as a block, and the graduates were paired within each law school and randomly assigned to one of the two methods.

Answer:

e.  Each law school served as a block, and the graduates were paired within each law school and randomly assigned to one of the two methods.

Step-by-step explanation:

Note, the matched pairs design is typically used when the experiment has two independent variables (treatment conditions), so the subjects of the experiment are grouped into pairs based on some common variable relationship they have before been randomly assigned to the treatment conditions.

In this case, the graduates were paired within each law school and randomly assigned to one of the two methods (the two treatment conditions).

Answer:

2.828 (the square root of 8)

Step-by-step explanation:

2.828 squared is 8, which is also the square root of 64

The value in the missing is x = 2√2 or x = -2√2 or x = ±√8 if the expression is _² = √64.

It is defined as the combination of constants and variables with mathematical operators.

We have a mathematical expression:

_² = √64

Let the missing number be x:

Then, the equation becomes:

x² = √64

√64 = √(8x8) = 8

x² = 8

The above equation represents a quadratic equation, Any equation of the form [tex]\rm ax^2+bx+c=0[/tex]  where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

[tex]\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}[/tex]

x = ±√8

x = ±2√2

Thus, the value in the missing is x = 2√2 or x = -2√2 or x = ±√8 if the expression is _² = √64.

Learn more about the expression here:

brainly.com/question/14083225

#SPJ5

Answer:

it's B a linear pair

because when you add them they make 180 °

Answer:

thirsty

Step-by-step explanation:love pionts

Answer:

B

seems to be the most precise. I don't know what it means by precise but B is the lucky guess

Answer:

The answer is x= 50 and y=50.

Step-by-step explanation:

So a straight line is always equal to 180 degrees. So, to find the length of the inner angle, subtract 100 from 180= 80. Now that you've gotten the value of that angle, you'll have to find x and y. All angles of a  triangle add up to 180 degrees. 180-80= 100. The small dash on both of those lines means they are equal. Do 100/2 = 50. Hope this helps!

Answer:

[tex]\angle 6, \angle 4[/tex]

Step-by-step explanation:

[tex]\angle 1\ and\ \angle 2\ are\ remote\ interior\ angles\ of\ \angle 6\ as\ they\ are\ opposite\ to\\ its\ linear\ pair\ \angle 3.\\\angle 2\ and\ \angle 3\ are\ remote\ interior\ angles\ of\ \angle 4\ as\ they\ are\ opposite\ to\\ its\ linear\ pair\ \angle 1.[/tex]

Answer:

B

l think correct answer is B )

Answer:

You can use the coordinates of a figure to find its dimensions by finding the distance between two points. To find the distance between two points with the same x-coordinates, subtract their y-coordinates. To find the distance between two points with the same y-coordinates, subtract their x-coordinates.

Step-by-step explanation:

Answer:

Step-by-step explanation:

1. The measurement is actual and should be considered as such. Estimate is approximate most of the time.

2. The error is:

3. Percent error:

Answer:

32 students were present.

Step-by-step explanation:

To find out how many students were present in class 8, we have to find out how many students were absent first.

As the question has already provided us, the number of students who are absent would be [tex]40 \cdot 20\%[/tex], which equals to [tex]40 \cdot \frac{20}{100}[/tex] which is 8 students in total who were absent in class 8.

Now that we have found out how many students were absent, simply subtract the number of students who were absent from the total number of students in class 8, which is (40 - 8) = 32 students, and you have the number of students that were present: 32.

Hope this helped!

Answer:

20/40

Step-by-step explanation:

If you make them decimals, then 17/40 = .43

0/40= .00    20/40 = .50    40/40 =1.00

so .50 is closest to .43.

Answer: 230 ducks were left.

Step-by-step explanation:

Answer:

31 ducks

Step-by-step explanation:

345 ÷ 33 1/3% = ducks left.

345 ÷ 33 1/3% = approximately 31

So once solved, you can conclude that there are 31 ducks left in the pond.

This product involves zero. So, you don't have to bother and compute all the factor, because if you multiply anything by zero you get zero.

Answer:

Step-by-step explanation:

the tax will cost

65.49*6.5=4.26

the total price of the book is

65.49+4.26=69.75

Answer:

70.74

Step-by-step explanation:

took the test (im in k-12) btw

Answer:

It is 6/7 because the denometere is sMe