What is the domain in interval notation?

Answer:

Step-by-step explanation:

[tex]\bold{2x^2 + 5x= 5x +50}\\\\{}\ \ -5x\qquad -5x\\\\\bold{2x^2\ =\ 50}\\\\\div2\quad\ \ \div2\\\\\bold{x^2=25}\\\\\bold{x=5\quad\vee\quad x=-5}[/tex]

Step-by-step explanation:

To write 5 as a fraction with a common denominator, multiply by 55 . Combine 5 and 55 . Combine the numerators over the common denominator. Simplify the numerator.

The convert of the mixed fraction into an improper fraction is [tex]\frac{27}{25}[/tex]

[tex]= 5\frac{2}{5}\\\\ = \frac{27}{25}[/tex]

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Answer:

[tex]\bold{\dfrac{1}{12}}[/tex]

Step-by-step explanation:

The dice is rolled 3 times.

To find:

The probability that a 4 will come up exactly twice = ?

Solution:

Let 4 comes up exactly twice, let the third number be [tex]x[/tex].

The possible outcomes can be:

([tex]x[/tex], 4, 4) where [tex]x[/tex] can be any number between 1 to 6 , so 6 outcomes.

(4, [tex]x[/tex], 4) where [tex]x[/tex] can be any number between 1 to 6 , so 6 outcomes.

(4, 4, [tex]x[/tex]) where [tex]x[/tex] can be any number between 1 to 6 , so 6 outcomes.

So, the total number of favorable outcomes possible = 6 + 6 + 6 = 18

Total number of outcomes that can be possible at roll of 3 dice:

6 [tex]\times[/tex] 6 [tex]\times[/tex] 6  = 216

Formula for probability of an event E is given as:

[tex]P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}[/tex]

[tex]P(\text{exact 2 fours}) = \dfrac{18}{216}\\\Rightarrow \bold{P(\text{exact 2 fours}) = \dfrac{1}{12}}[/tex]

Answer:

1)26=8+v

v=26-8

v=18

2)3+P=8

P=8-3

P=5

please mark me as BRAINLIST

Answer:

12a

Step-by-step explanation:

Because -9a and 9a would get rid of themselves the only "a-value" left is 12a. 10 and -10 also cancel each other out so 12a is all that is left.

If you need more help let me know, have a great day!

Answer:

i need the number line

Step-by-step explanation:

lol

Answer:

96 bales

Step-by-step explanation:

[tex]\frac{64}{4}[/tex] = [tex]\frac{x}{6}[/tex]

You must multiply 6 by 64, which is 384.

Then you divide that by 4, which is 96.

Therefore, the answer is 96.

Also, I lined up the bales in the same row and horses in the same row, so this way can help. It can also help if it's in the same column though, but I hope this helped you!

Answer:

96

Step-by-step explanation:

Answer:

3/x

Step-by-step explanation:

1 wall - x hours

y wall - 3 hours

y = (1*3)/x=3/x

The fraction of the wall that she paints in 3 hours is 3/x.

Here,

A painter paints a wall in x hours.

We have to find, the fraction of the wall that she paints in 3 hours.

What is fraction?

A fraction simply tells us how many parts of a whole we have.

Now,

Here, A painter paints a wall in x hours

1 wall = x hours

Let number of walls is z when she paints in 3 hours.

z wall = 3 hours

Hence, The fraction of the wall that she paints in 3 hours =( 1 x 3)/x

                                                                                        = 3/x

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Answer:

C) line BD

Step-by-step explanation:

If you fold along the line the sides of the shape should line up perfectly. the only answer listed that fits the criteria is C

Answer:

Tip amount: $6.49

Final amount of the bill: $38.92

Step-by-step explanation:

We need to calculate the tip amount which is 20% of $32.43.

Then we will add the tip amount to $32.43.

To find a percent of a number, change the percent to a decimal by dividing the percent by 100 and multiply by the number.

20% of $32.43 =

= 0.2 * $32.43

= $6.486

We round off the tip amount to the nearest cent, $6.49

The tip amount is $6.49

To find the final amount of the bill, we add the tip amount to the bill amount.

$32.43 + $6.49 = $38.92

Step-by-step explanation:

we have the equation

[tex]C=1.02x+153[/tex]

19. cost when x=250

[tex]C=1.02(250)+153\\\\C=408[/tex]dollars

20. what does the slope means in the context

it means the regular increase of the cost, in other words, how much is the cost increasing per mile driven

21. what does the y-intercept means in the context

it means the starting cost of only renting the car one day, not even driving it, it's the lowest cost you can get

Answer:

70.71m

Step-by-step explanation:

In order to find the diagonal, we can use Pythagiras theorem by splitting the field in half and creating a right angled triangle.

A^2+B^2=C^2

50^2+50^2=C^2

5000=C^2

Square root 5000= 70.71m (2dp)

Hope this helped!

Since there is a barricade placed along the diagonal sq field, let's focus on one side of the triangle.

A pythagoras theorem formula can be used for right angle triangle.

So now we let the barricade be X.

By Pythagoras Theorem,

X² = 50² + 50²

X = sq root (50² +50²)

= 70.711 m ( 5sf)

= 70.7 m ( 3sf)

Therefore, the length of barricade is 70.7 m

Answer:

32

Step-by-step explanation:

In a full factorial experiment, there are usually 32 or 2⁵ treatments. This implies that there are usually  2 levels and 5 factors. From the description below, there is a list of the 32 treatments.

Factor A      Factor B      Factor C      Factor B      Factor E

lo                   hi                 hi                 hi                hi

hi                   low              hi                 hi                hi

hi                   hi                low               hi                hi

hi                   hi                 hi                 low             hi

hi                   hi                 hi                 hi               low

lo                   lo                 hi                 hi               hi

lo                   hi                 lo                 hi               hi

lo                   hi                 hi                 lo              hi

Answer:

18

Step-by-step explanation:

First, I'm assuming AB=4=4x-2 was a typo and it's supposed to be AB = 4x - 2

AB=BC

AB = 4x - 2 BC = 3x + 3

4x - 2 = 3x + 3

Solve for x Add 2 to each side

4x - 2 = 3x + 3

4x - 2 + 2 = 3x + 3 + 2

4x = 3x + 5 Subtract 3x from each side.

4x - 3x = 3x- 3x + 5

4x - 3x = 5

x = 5

Now plug back in to the original equations

AB = 4x - 2                  BC = 3x + 3

AB = 4 (5) - 2               BC = 3(5) + 3

AB = 20 - 2                  BC = 15 + 3

AB = 18                        BC = 18

So AB is 18

Answer:

[tex]2.3x+1.4=8.5[/tex], width = 3.087 feet.

Step-by-step explanation:

Let as consider width of the door be x feet.

It is given that height of a door is 1.4 feet more than 2.3 times its width. So,

[tex]Height=2.3x+1.4[/tex]

The height of the door is 8.5 feet.

[tex]2.3x+1.4=8.5[/tex]

Therefore, the required equation is [tex]2.3x+1.4=8.5[/tex].

[tex]2.3x=8.5-1.4[/tex]

[tex]2.3x=7.1[/tex]

[tex]x=\dfrac{7.1}{2.3}[/tex]

[tex]x\approx 3.087[/tex]

So, the width of the door is about 3.087 feet.

Answer:

- A reflection can be done on a point, shape, or object

- A reflection flips a shape across a line

Step-by-step explanation:

A reflection is a rigid transformation, meaning that the object that you are reflecting does NOT change size or shape. A reflection is when you graphically "flip" an image across a line such as the x-axis or the y-axis.

Answer:

22

Step-by-step explanation:

4+18=22 if y is solved for 18 in the equation 4+y= the answer would be 22.

Answer:

22

Step-by-step explanation:

Evaluate y + 4 where y = 18:

y + 4 = 4 + 18

Hint: | Evaluate 4 + 18 using long addition.

| 1 |  

| 1 | 8

+ | | 4

| 2 | 2:

Answer: 22

Step-by-step explanation:

(f○g)(-3)

= f(g(-3))

g(-3) =

[tex] \frac{2}{2( - 3) - 1} [/tex]

g(-3) = -2/7

f(-2/7) = (-2/7)^2 + 2(-2/7) -4

= 4/49 - 4/7 - 4

= 4/49 - 28/49 - 196/49

= -220/49

please check again ^-^

Answer:

C. 95:19

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

because the total number of students is 95 and those who play Spanish club is 19

The odd function from the following function is f(x) = 6x³ + 2x.

The function f(x) is said to be an odd function if the output value of f(-x) is the same as the negative of f(x) for all values of x in the domain of f.

f(-x) = -f(x)

The functions are given below.

f(x) = 3x² + x

f(x) = 4x³ + 7

f(x) = 5x² + 9

f(x) = 6x³ + 2x

f(x) = 3(-x)² + (-x) = 3x² - x

f(x) = 4(-x)³ + 7 = -4x³ + 7

f(x) = 5(-x)² + 9 = 5x² + 9

f(x) = 6(-x)³ + 2(-x) = -6x³ - 2x = - (6x³ + 2x)

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Answer:

D f(x) = 6x3 + 2x

Step-by-step explanation:

Answer:

Step-by-step explanation:

(1 - 9)/(7 - 9)= -8/-2 = 4 is the slope

Answer:

The Expression is equivalent to 12+3+ negative 7

Step-by-step explanation:

When you sub tract something for example 5-3 the three can be looked at as a negative number. 5-3=2 but 5+ (-3)=2 as well

The associative property indicates that the true statement about the expression is the option;

''The expression is equivalent to 12 + 3 + (negative 7) because of the associative property''

The associative property is related to the grouping of the numbers in an operation. According to the associative property changing the grouping of numbers does not change the result of addition and multiplication.

The associative property allows us to change the grouping of the addition operation, so we can rewrite the expression as follows; (12 + 3) + (negative 7), which simplifies to 15 + (negative 7) or 8. The commutative property on the hand, allows us to change the order of the addition operation. However, with regard to the question, it is not relevant because the expression involves addition and subtraction

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Answer:

Average velocity of the function over the given interval

              =  [tex]log(\frac{7}{4} ) -2[/tex]

Step-by-step explanation:

Explanation:-

Given function y = 3/x -2 ...(i)

The average velocity of the function over the given interval

             Average velocity  = [tex]\frac{1}{b-a} \int\limits^b_a {(\frac{3}{x} -2)} \, dx[/tex]

                               =    [tex]\frac{1}{7-4} \int\limits^7_4 {(\frac{3}{x} -2)} \, dx[/tex]

now integrating

                           =   [tex]\frac{1}{3}( \int\limits^7_4 {(\frac{3}{x} )} \, dx-2\int\limits^7_4 {1} \, dx )[/tex]

                           = [tex]\frac{1}{3} (3 (log x) - 2 x )_{4} ^{7}[/tex]

                        =   [tex]\frac{1}{3}( (3 (log 7) - 14 )-(3 log 4 -8))[/tex]

by using formulas

                 log a-log b = log(a/b)

  on simplification , we get                  

                 = [tex]\frac{1}{3}( (3 (log 7) -3 log 4 ) - \frac{1}{3} (6)[/tex]

                = [tex]log(\frac{7}{4} ) -2[/tex]

Average velocity of the function over the given interval

              =  [tex]log(\frac{7}{4} ) -2[/tex]

Answer:

Step-by-step explanation:

1/2 n + 3 = 6

-3 -3

1/2 = 3

Answer is 1.5=n

Answer:

n = 18

Step-by-step explanation:

(1/2)*n-3 = 6 // - 6

(1/2)*n-6-3 = 0

1/2*n-9 = 0 // + 9

1/2*n = 9 // : 1/2

n = 9/1/2

n = 18

n = 18

PLZ GIVE ME BRAINLIEST

Answer:

25% increase.

Step-by-step explanation:

Answer:

21.42x+28.56

Step-by-step explanation:

Expand: 4.2×5.1×x+4.2×6.8

4.2×5.1×x  to (21.42)x

Simplify: 21.42x+4.2×6.8

4.2×6.8 = 28.5628.56

21.42x+28.56