solve for x and y
picture provided ​

Answer:

24

Step-by-step explanation:

2(x-3)

2(15-3)

2(12)

24

Hopes this helps please mark brainliest

Answer:

24

Step-by-step explanation:

2(x - 3)

==> plug in x = 15

2(15 - 3)

==> subtract 3 from 15

2(12)

==> multiply 2 and 12

=24

Remember we evaluate using pemdas

Parenthesis

Exponents

Multiplication and Division (going left to right)

Addition and Subtraction (going left to right)

This is the order of operations we use to determine which operation we perform. Here we first used "parenthesis" and did all operations inside of the parenthesis. We then ended with multiplication

Answer:

A. $760

Step-by-step explanation:

Price: $8

Amount of goods; 95

revenue = price x total units

$8 x 95 = $760 revenue

Answer:

1) 71.83

2) 43

3) 41

4) 755.66

5) 458

6) 1757.12

7) 123 meters

The converse statement is:

"If next month ends in the letter r, then this month is September."

And a counterexample of this is the month of September.

A conditional statement is of the form:

If P, then Q.

And a converse statement of the above one will be:

if Q, then P.

Here our conditional statement is:

"If this month is September, then next month ends in the letter r."

So we have:

P = this month is September.

Q = The next month ends in the letter r.

Replacing that in the converse statement formula we get:

"If next month ends in the letter r, then this month is September."

A counterexample is September, it ends with an r, and the month after it is not September.

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Answer:

If next month ends in the letter r, then this month is September. The converse is invalid; a counterexample is December.

To make 21 gallons of 3% disinfectant solution, 7 gallons of 5% solution are used, and 14 gallons of 2% solution are used.

21 gallons of the 3% solution is required.

Therefore, the amount of disinfectant in the solution

= 3/100  X  21 gallons

= 0.63 gallons

Let the amount of 5% disinfectant solution used be x

Therefore,

the amount of 2% disinfectant solution used is (21 - x)

Now, the amount of disinfectant added through these solutions must be equal to the amount of disinfectant in the solution.

Hence,

5/100 X x  +  2/100 X (21 - x) =  0.63

or, 5x/100 + (42 - 2x) / 100 = 0.63

or, 0.05x + 0.42 - 0.02x = 0.63

or, 0.03x = 0.63 - 0.42

or, 0.03x = 0.21

or, x = 0.21 / 0.03

or, x = 7

Therefore 21 - x = 14

Hence 7 gallons of 5% solution is used and 14 gallons of 2% solution is used.

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The measurement of a quantity requires units to be defined. The 6 ounce of raisins is equal to 171100 milligrams of it.

A measurement unit is unit to measure different quantities such as mass, length and time.

The measurement unit of one quantity can be converted into the other by multiplying it with a certain number.

Given that,

The amount of raisins is 6 ounces.

Since One ounce is equal to 23.85 grams,

6 ounce converted in grams equals 6 × 28.35 = 171. 10 grams

Now, 1 gram = 1000 milligrams.

Therefore, 171. 10 grams = 171.10 × 1000 milligrams

                                         = 171100 milligrams.

Hence, 6 ounces of raisins is equivalent to 171100 milligrams.

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Answer:

A recipe calls for 170,100 milligrams of raisins.

Step-by-step explanation:

I took the exam and got it right

Answer:

6x - 3

Step-by-step explanation:

3 ( 2x - 1  )

= 3 ( 2x ) - 3 ( 1 )

= 6x - 3

Answer:

x=1/2 or 0.5 or just 6x-3

Step-by-step explanation:

3(2x-1)

distribute.

6x-3

get 6x alone

6x=3

divide

x=3/6

x=1/2 or 0.5

The system of inequalities that best represent the shaded feasible region shown on the graph is

information gotten from the question include

inequality graph showing shaded regions

some interpretation on the information from the question include

This interpretation removes the first and the last options since they contain the equal to sign

positive slope moves from bottom left to top right

y < x + 1

negative slope moves from top left to down right

y < -x - 2

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The joint relative frequency is 23%. So option (1) is correct.

Joint relative frequency is defined as the ratio of a frequency that is not in the total row or column to the total number of values or observations. The marginal frequency in a two-way frequency table is the entry in the "total" for the column and the "total" for the row.

Given data:

                         Traditional     Online       Row totals

Computer:             28                62               90

Mobile device:       46                64              110

Column totals:       74               126             200

The joint relative frequency can be found by the formula:

= (Number of students using a mobile device in traditional class / Total Number of students) x 100%

Number of students using mobile devices in traditional class = 46

Total number of students = 200

= (46 / 200) x 100%

= 0.23 x 100%

= 23 %

Therefore the joint relative frequency of students in traditional classes using a mobile device is 23%.

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Answer:

see explanation

Step-by-step explanation:

- 1, 2, 5, 8

(a)

the common difference

d = a₂ - a₁ = 2 - (- 1) = 2 + 1 = 3

(b)

to find a term in the sequence add d = 3 to the previous term

a₅ = = 8 + 3 = 11

a₆ = 11 + 3 = 14

a₇ = 14 + 3 = 17

a₈ = 17 + 3 = 20

(c)

the recursive rule is

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] + 3 : a₁ = - 1

(d)

the explicit rule for an arithmetic sequence is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = - 1 and d = 3 , then

[tex]a_{n}[/tex] = - 1 + 3(n - 1) = - 1 + 3n - 3 = 3n - 4

Answer:

See below.

Step-by-step explanation:

Let the price of drinks be x and the price of candies be y.

9x + 4y = 60 --------------------(1)

10x + 2y = 57.50 --------------(2)

2(10x + 2y) = 57.50*2

20x + 4y = 115 --------------(3)

9x + 4y - 20x - 4y = 60 - 115

9x - 20x = -55

-11x = -55

11x = 55

x = 55/11

Put x = 5 in Eq. (1)

9(5) + 4y = 60

45 + 4y = 60

4y = 60 - 45

4y = 15

y = 15/4

So, the cost of one drink is $5 and the cost of one candy is $3.75.

[tex]\rule[225]{225}{2}[/tex]

Answer:

  8/15

Step-by-step explanation:

You want the fraction of a rain gauge filled after 15 more minutes when the rain rate is 2/5 of the gauge in 3/4 of an hour.

15 minutes is 1/4 hour, so 15 more minutes brings the total time to 1 hour. The fraction (x) of the gauge that is filled will be ...

  x/1 = (2/5)/(3/4)

  x = (2/5)(4/3) = 8/15

After a total of 1 hour, the rain gauge will be 8/15 of the way full.

The total charge for the month is £625.36.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given:

Fixed monthly plan - 616

free minutes - 150

Used minutes - 170

Free text - 150

Used text - 182

Charging amount over the free limit - 18p

Number of minutes over the limit -  170 - 150 = 20

Number of text over the limit - 182 - 150 = 32

So the extra amount that will be added to the monthly charge would be -

(20 x 0.18) +(32 x 0.18)

The total charge of the month would be -

C= 616+(20*0.18) +(32*0.18)

C= 616+3.60+5.76

C= 625.36

Therefore, the total charge for the month is £625.36.

The correct question is given below,

Here are the monthly charges for Jo's mobile phone

Monthly charge 616

150 free minutes, then 18p per minute

150 free texts, then 18p per text

During one month, Jo makes 170 minutes of calls and sends 182 texts,

Work out the total charge for the month

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Answer:34?

Step-by-step explanation: not too sure but yeah

Given that the coefficient of x³ is twice the coefficient of x² in the binomial expansion of f(x)

(a) It is proved that n = 6k + 2

(b)k = 2 and n=14

(c) After expansion, the equation is
   1 + 14x + 91/4x^2 + 1001/2x^3 + 1001/16x^4 + 1001/16x^5

What is the binomial theorem?

The algebraic expansion of a binomial's powers is described by the binomial theorem (also known as binomial expansion) in elementary algebra.
The theorem states that the polynomial (x + y)n can be expanded into a sum including terms of the form axbyc, where the exponents b and c are nonnegative integers and b + c = n, and the coefficient an of each term is a particular positive integer dependent on n and b.

Solution Explained:

f(x)= (1+x/k)^n

Given that the coefficient of x^3 is twice the coefficient of x^2 in the binomial expansion of f(x)

a)

Coeff of x^3 = 1/6[n(n-1)(n-2)/k3]

Coeff of x^2 = 1/2[n(n-1)/k2]

1/6[n(n-1)(n-2)/k3] = 2* 1/2[n(n-1)/k2]

Canceling on both sides gives:

(n-2)/(6k) = 1

n = 6k+2        Hence proved

Given also that the coefficients of x^4 and x^5 are equal and non-zero,

b)

Coeff x^4 = 1/24 [n(n-1)(n-2)(n-3)/k4

Coeff x^5 = 1/120 [n(n-1)(n-2)(n-3)(n-4)/k5

1/120 [n(n-1)(n-2)(n-3)(n-4)/k5 = 1/24 [n(n-1)(n-2)(n-3)/k4

Canceling gives:

(n-4)/(120k) = 1/24

n = 5k+4

From previous:

n = 6k+2 = 5k+4

k = 2

n=14

Using these values of k and n,

c)

Give each coefficient as an exact fraction in its lowest terms
1 + 14x + 91/4x^2 + 1001/2x^3 + 1001/16x^4 + 1001/16x^5

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The value of angle A and B are 60° and 120° respectively.

It is important to note that in isosceles trapezoid, the angles adjacent to the bases are congruent.

Therefore A = D

B = C

When in the right angle, the hypothenuse is twice the leg, the angle opposite it will be:

ABK = 30°

Also, KBC = 90°

Therefore, B = 30° + 90° = 120°

A = D = 180° - 120° = 60°

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Complete question:

Given: ABCD trapeziod, AB=DC, BK - altitude, AB=8, AK=4

Find: mA and mB.

Answer:

-7,7

Step-by-step explanation:

Answer:

John has 4 pair of jeans.

Hope this helps : )

Step-by-step explanation:

Together they 10, so if Janet has 6 more, we have to subtract.

10 - 6 = 4

Check:

6 + 4 = 10 ✔

Answer:

Vertex: (-2, 3) Axis of symmetry: x = -2 The parabola opens downward.

Step-by-step explanation:

Reason:

The digit in the tens place is 1. Just to the right is 5, which tells us to bump the 15 up to 20.

We can say that 15.0872 is closer to 20, than it is to 10.

Be sure not to mix up "tens place" with "tenths place".

The round-off from the number 15.0782 to the nearest 10 will be 20.

When a number is rounded off, its value is maintained but is brought closer to the next number, simplifying the number. For entire numbers as well as decimals at different places of hundreds, tens, tenths, etc., it is done.

A number can be rounded off to its lower value if the number after the decimal is between 0 and 4. The number will be rounded off to its higher value if the number after it is between 5 and 9.

Given that the number is 15.0782. The round-off to the nearest 10 will be 20 for the number.

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There are 2 common factors of 9 and 24, that are 1 and 3. Therefore, the greatest common factor of 9 and 24 is 3.

In mathematics, the greatest common divisor of two or more nonzero integers is the largest positive integer that divides each integer

. The greatest common divisor (GCF) of a set of numbers is the greatest factor of division of all numbers.

GCF by listing factor method :-

Factors of 9: 1, 3, 9

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

There are 2 common factors of 9 and 24, that are 1 and 3. Therefore, the greatest common factor of 9 and 24 is 3.

other two methods are attached below .

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√14 feet, A coordinate system in geometry is a method for determining the precise location of points or other geometrical objects on a manifold, such as Euclidean space, using one or more numbers, or coordinates.

A coordinate system in geometry is a method for determining the precise location of points or other geometrical objects on a manifold, such as Euclidean space, using one or more numbers, or coordinates.

Coordinates are a pair of numbers that identify a specific point on a coordinate plane, which is a grid of integers. A point in a plane has specific coordinates, as we are aware. Any point's location on a plane can be described by an ordered pair of numbers, or coordinates, which are written as ((x,y)).

A coordinate can be expressed in one of three ways. a coordinate with an integer for degrees, a real number for minutes, and an integer for seconds (DMS). a coordinate that contains minutes (a real number) and degrees (an integer) (MinDec). a coordinate that merely contains degrees (real number).

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A) The value of the measure of angle x is; x = 55 degrees.

B) The way we got x is that the Internal angle between 2 parallel lines are equal and also that the three angles APO, x and BPR form a straight line and they sum up to 180 degrees.

A) From the given image attached, we see that the angle RPB can be calculated as;

m∠RPB = 180 - 120 = 60 degrees.

This is because sum of angles on a straight line sums up to 180 degrees.

Now, by definition of alternate angles, we can say that angle BPR is equal to 60 degrees.

Thus, the value of angle x is;

x =  180 - 60 - 65

x = 55 degrees.

B) From the given diagram, we can say that;

m ∠RPB + m < PRD = 180 degrees

This is because Internal angle between 2 parallel lines are equal.

Secondly the three angles APO, x and BPR form a straight line and they sum up to 180 degrees.

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0.0456  is the probability that a sample mean is out of control.

What is probability in math?

UCL = 520

LCL = 480

Mean (X ) = 500

Standard Deviation of sample (Sn) = 11.55

Z (for UCL) = (UCL - Mean)/Sn

Z (for UCL) = (520-500)/10

Z (for UCL) = 2

Z (for LCL) = (LCL - Mean)/Sn

Z (for LCL) = (480 - 500)/10

Z (for LCL) = -2

*Use Z table to find confidence level between Z value of -2 and 2.

Confidence level = 0.4772 + 0.4772

Confidence level = 0.9544

Risk (α ) = 1 - confidence level

Risk (α) = 1 - 0.9544

Risk (α) = 0.0456

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Answer:

-3.2

Step-by-step explanation:

-5(x+1)-9=2

first simplify by distributiom

-5(x)-5(1)-9=2

simplify the multiplication

-5x-5-9=2

add the numbers

-5x-14=2

now to get x by itself on one side we undo in reverse order and move the -14 over to the other side so add 14 to both sides to cancel the -14

-5x=2+14

simplify

-5x=16

now divide both sides by -5 to get x by itself

-5x/-5=16/-5

simplify

x=-3.2 or as a fraction, [tex]-\frac{16}{5}[/tex]

( 0 , -1 , 5) point lies on xyz plane .

The xy-plane is the plane that houses the x- and y-axes, while the yz-plane and the xz-plane house the y- and z-axes, respectively. Space is divided into eight sections known as octants by these three coordinate planes. The positive axes determine the first octant, which is in the front.

To be expressed, everything needs a perspective and a point of view. The three spatial dimensions are represented by the X, Y, and Z coordinates. These stand for length, width, and depth. We employ the same X, Y, and Z denotations when referring to machines, but we assign them different values or meanings. Even more intriguingly, there are no clear laws defining the meaning, which makes it difficult to converse on these levels.

this given point lies on xyz plane bcz the point itself shows coordinates which is only possible in xyz plane .

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Dimensions of the box are (25-2h) and (20-2h) and Volume of the box will be V=h(25-2h)(20-2h).

Three dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height.

Given,

A piece of cardboard that is 25 inches by 20 inches is to be made into a box with an open top

Each corner will have a square of the same dimensions cut out to be folded into an open box with no top.

Let the cut squares will have side h then h is the height of the box and the two lengths are (25-2h) and (20-2h).

The dimensions of the box are (25-2h) and (20-2h)..

Volume of the box will be V=h(25-2h)(20-2h)

Hence, dimensions of the box are (25-2h) and (20-2h) and Volume of the box will be V=h(25-2h)(20-2h).

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Answer:

1/9 > m

Step-by-step explanation:

-2(7+3m)+6m>3(3m-5)

Distribute.

-14-6m+6m>9m-15

Combine like terms.

-14>9m-15

1>9m

Get m to be alone.

1/9>m

       -2(7+3m) + 6m > 3(3m-5)

       -2(3m+7) + 6m > 3(3m-5)

The final answer is m < 1/9

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