how do I solve 12-3(x-5)=21

Answers

Answer 1
12-3(x-5)=21

Distribute
12-3x+15=21

Combine like terms
27-3x=21

Subtract 27 from both sides
-3x= -6

Divide both sides by -3
x=2

Final answer: x=2

Related Questions

Which of the following methods would be easiest to use to solve 2x^2 + 5x - 11 = 0

A) factoring
B) isolating the x^2 term and finding the square root of both sides
C) using quadratic formula
D) all three methods would be easy and effective

Answers

The easiest ways is to use the quadratic formula that is:

x' = [-b+√(b² - 4ac)]/2a  and   x" = [-b -√(b² - 4ac)]/2a 

Solving : 2x² + 5x - 11 = 0, gives:

x' = [-5+√(25 - 4(2)(-11)]/4  and   x" = [-5-√(25 - 4(2)(-11)]/4

x' = (-5+√113)/4     &    x" = (-5-√113)/4

The median for the given set of six ordered data values is 26.5. what is the missing value? 7 12 21 ____ 41 50

Answers

Answer:

The missing term is x=32.

Step-by-step explanation:

Given :  The median for the given set of six ordered data values is 26.5.

To find : What is the missing value?

Solution :

The data set is 7 12 21 ?41 50

let the missing term or 4th term be x.

We know, The median of an even number is sum of nth term by 2 and nth+1 term by 2.

So, Applying median formula for even terms is

Term, [tex](\frac{n}{2},\frac{n}{2}+1)[/tex]

[tex](\frac{6}{2},\frac{6}{2}+1)=3^{rd},4^{th}[/tex]

The median is sum of 3rd and 4th term.

[tex]26.5=\frac{21+x}{2}[/tex]

[tex]53=21+x[/tex]

[tex]53-21=x[/tex]

[tex]32=x[/tex]

Therefore, The missing term is x=32.

If the median for the given set of six ordered data values is 26.5 then the missing value is 32.

The ordered set of data values is:

7, 12, 21,x, 41, 50

Given that the median is 26.5, it represents the middle value of the data set.

Since the set has six values, the median should be the average of the two middle values.

Let's assume the missing value is 'x':

7, 12, 21, x, 41, 50

We can see that 'x' should be the fourth value to maintain the ascending order.

Now, we need to find the value of 'x' that makes the median equal to 26.5.

To calculate 'x', we can set up the equation:

(21 + x) / 2 = 26.5

Multiply both sides by 2:

21 + x = 53

Subtract 21 from both sides:

x = 32

Therefore, the missing value in the set is 32.

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x+3menor que 8 qual o resultado

Answers

x+3<8

8-3 =5

 X<5

 any number less than 5 will work

Outside diameter of a pipe is five and 7/32 inches the wall of the pipe or 5/32 inches thick find the inside diameter

Answers

5  7/32 = 167/32

5/32 + 5/32 (2 wall thicknesses of the pipe) =10/32

167/32 - 10/32 = 157/32

= 4 29/32

What percentage of muscle weight would you have if 60 pounds out of 140 pounds is muscle weight?

Answers

What percentage of muscle weight would you have if 60 pounds out of 140 pounds is muscle weight?
all you have to do is divide the muscle weight by the total weight which is...60/140=
ANSWER: about 42.86%
Percent literally means per one hundred...

p/100=60/140  multiply both sides by 100

p=6000/140  

p=300/7 %

p≈42.86%  (to nearest hundredth of a percent)

How do i simplify this?

Answers

[tex]\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\ a^{-{ n}} \implies \cfrac{1}{a^{ n}} \qquad \qquad \cfrac{1}{a^{ n}}\implies a^{-{ n}} \qquad \qquad a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\ -------------------------------\\\\[/tex]

[tex]\bf \cfrac{(xy^{-3})^{-5}}{(x^{-3}y)^{-6}}\impliedby \textit{first off, distribute the exponent} \\\\\\ \cfrac{x^{1\cdot -5}y^{-3\cdot -5}}{x^{-3\cdot -6}y^{1\cdot -6}}\implies \cfrac{x^{-5}y^{15}}{x^{18}y^{-6}}\implies \cfrac{y^{15}\cdot y^6}{x^{18}\cdot x^5}\implies \cfrac{y^{15+6}}{x^{18+5}}\implies \cfrac{y^{21}}{x^{23}}[/tex]

11.   Edgar Anderson earns $200 a week plus a 15% commission on all sales over $1,000. If Mr. Anderson's sales for one week are $2,500, what is his gross pay for that week?

Answers

well, for that one week, he made his salary, 200 bucks, plus 15% of his sales, because his sales were over $1000, to be exact, they were $2500, so he made 15% of 2500 extra on top of his salary.

so, what's 15% of 2500? well, is just (15/100) * 2500.

so, add that to his $200 salary, and that's his gross pay.

Suppose a and b are independent events. if p(a)=0.4 and p(b)=0.1, what is p(a u

b.?

Answers

Final answer:

To find the probability of the union of two independent events, use the formula P(A U B) = P(A) + P(B). In this case, P(A U B) = 0.4 + 0.1 = 0.5.

Explanation:

To find the probability of the union of two independent events, we can use the formula:

P(A U B) = P(A) + P(B) - P(A ∩ B)

Since the two events, A and B, are independent, the probability of their intersection, P(A ∩ B), is 0. This is because the occurrence of one event does not affect the occurrence of the other event. Therefore, we have:

P(A U B) = P(A) + P(B)

Substituting the given values, we get:

P(A U B) = 0.4 + 0.1

= 0.5

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The ordered pair (a, b) gives the location of point P on the coordinate plane. The value of a is zero and the value of b is not zero. Where could point P be located on the coordinate plane?





Select one or more:
x-axis
Quadrant IV
y-axis
Quadrant I
Quadrant II
Quadrant III

Answers

Answer:

y axis and

Step-by-step explanation:

The point P(a, b) where the value of a is 0, hence point P is located on the y axis.

Coordinate plane

The coordinate plane is a two-dimensional surface formed by two lines known as the horizontal axis (x axis) and the vertical axis (y axis). The origin is the point of intersection of both axis and it serves as a reference point.

A point on the coordinate plane is located using the x and y coordinates.

Given the point P(a, b) where the value of a is 0, hence point P is located on the y axis.

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Match each word from Column A with the correct definition from Column B. Column A Column B 1. impulse 2. muster 3. naught 4. renown 5. vacancy 6. thrifty A. the state of being empty or not filled B. nothing, nonexistence C. to stir up or bring to action D. a sudden stirring to do something E. fame F. careful with money

Answers

1. D
2. C
3. B
4. E
5. A
6. F

Answer:

The correct matches are:

1. impulse - a sudden stirring to do something

2. muster - to stir up or bring to action. Like to muster up the courage to speak against the wrong doer.

3. naught - nothing, nonexistence

4. renown - fame ; the condition when you are known or talked about by many people.

5. vacancy - the state of being empty or not filled. Like vacancy for new candidates for a job.

6. thrifty - careful with money . Like a person is thrifty about his own time.

An object is thrown from an initial height of 0 feet with an initial velocity of 160 feet per second. Solve for when it will return to the ground. Show your work and explain the steps used to solve.

Answers

Projectile motion is when the direction of an object follows the shape of an arc. The only force acting on the object is gravity. Also, the concept is that the motion of the horizontal and vertical directions are independent. Therefore, assuming no air resistance, the time for a rock thrown over the cliff at some angle to reach the ground will be the same time if you just simply free-fall the rock. 

Hence, we can solve this using rectilinear motion equations.

y = vt + 1/2*a*t^2, where
y is the vertical distance
v is the initial velocity
a is the acceleration due to gravity equal to -32.2 ft/s^2
t is the time of flight

However, it would be impossible to have 0 height. I think there is some typographical error right there. Let's just assume a height of 1000 ft. Substituting the values,

100 = 160*t + 1/2*-32.2*t^2
t = 9.3 seconds

To avoid distortion of extreme values, a good indicator would be the A. mean. B. weighted-mean. C. mode. D. median

Answers

To avoid distortion of extreme values, a good indicator would be the


B. median.


I agree the answer is 
median


What is the greatest angle measure in the diagram?
95˚
105˚
119˚
180˚

Answers

the answer should be 119

The solution is, The greatest angle measure is angle F which is 119°

What is an angle?

In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle. The two rays are called the sides of an angle, and the common endpoint is called the vertex.

here, we have,

The sum of all the angles of a quadrilateral is 360°

(15x-10)°+(15x+14)°+(9x-4)°+(11x+10)° = 360°

Open up the brackets and rearrange the expression

15x-10°+15x+14°+9x-4°+11x+10°=360°

15x+15x+9x+11x-10°+14°-4°+10° = 360°

50x+10°=360°

Collect like terms

50x=360°-10°

50x=350°

Divide by the coefficient of x

x= 350/50

X=7°

Substitute the value of x into the various angles

15x-10°=(15×7)-10= 105-10=95°

15x+14°=(15×7)+14=105+14=119°

9x-4°=(9×7)-4=63-4=59°

11x+10°=(11×7)+10=77+10=87°

The greatest angle measure is angle F which is 119°

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what is 795840000 in a scientific notation

Answers

795840000 in a scientific notation
=
7.9584 x 10^8
hope it helps
The answer would be 7.9584 * 10^8

Ray and lilli are designing their own shoes. They have 4 color options for the base and 6 color options for the accent. They can also pick 2 fonts for the embroidery. What is the probability that ray and lilli design identical shoes?

Answers

To solve this problem, let us first calculate the probability of designing one shoe out of all the combinations.

Probability of designing one shoe = (probability of choosing 1 color for the base) * (probability of choosing 1 color for the accent) * (probability of choosing 1 font for the embroidery)

We know that probability is:

Probability = number of chosen event / number of total events

Therefore:

Probability of designing one shoe = (1 / 4) * (1 / 6) * (1 / 2)

Probability of designing one shoe = 1 / 48

This means that either Ray or Lilli has this probability of designing a specific shoe. Since we are asked for the probability that they will both design this specific shoe, so we multiply:

Probability they will design the same shoe = (1 / 48) * (1 / 48)

Probability they will design the same shoe = 1 / 2304 = 4.34 * 10^-4

 

The probability is around 0.043% that they will design the same shoe.

A carpenter is assigned a job of installing a spa into a pre-existing deck. The dimensions of the deck are (6x + 1) wide by (4x - 3) long. The dimensions of the spa are (4x + 5) wide by (x + 6) long.

Write the polynomial that represents the remaining area of the deck after the carpenter cut the hole out for the spa.

Answers

Area of the deck minus area of spa is equal to the area of the deck remaining...

A=(6x+1)(4x-3)-(4x+5)(x+6)

A=24x^2-18x+4x-3-4x^2-24x-5x-30

A=24x^2-14x-3-4x^2-29x-30

A=20x^2-43x-33  or if you factor...

A=20x^2+12x-55x-33   

A=4x(5x+3)-11(5x+3)

A=(4x-11)(5x+3)

Which polygon has an interior angle sum of 1080°?

Answers

The polygon which has an interior angle sum of 1080° is an Octagon

Interior angles of a Polygon

From the question, we are to determine which polygon has an interior angle sum of 1080°

To find that, we will determine the number of sides the polygon has.

From the formula for sum of the interior angles in a polygon

Sum of interior angles = (n-2)180°

Where n is the number of sides

Then,

1080° = (n-2) 180°

1080° ÷ 180° = n-2

6 = n-2

n = 6 + 2

n = 8

A polygon with 8 sides is called an Octagon

Hence, the polygon which has an interior angle sum of 1080° is an Octagon

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There are 65 people who want to go on a tea cups ride at an amusement park. There are 10 tea cups that each seat 4 people. How many people need to wait before they get to go on the ride?

Answers

25 people will wait for the next ride

A ship at sea, the Gladstone, spots two other ships, the Norman and the Voyager, and measures the angle between them to be 44°. The distance between the Gladstone and the Norman is 4510 yards. The Norman measures an angle of 36° between the Gladstone and the Voyager. To the nearest yard, what is the distance between the Norman and the Voyager? 

Answers

Answer:

3181 yards.

Step-by-step explanation:

All the given information can be used to draw a simple diagram. The diagram shows a triangle which is formed by the ships. There are two angles given and one side is given. Therefore, the sine rule must be used to solve the question. The sine rule can be written as:

sin V / v = sin G / g.

It can be observed that the angle V is unknown, however, it can be calculated very easily. Simply use the law of triangle in which all the 3 angles sum up to 180 degrees. So V = 180 degrees - 44 degrees - 36 degrees = 100 degrees. So plugging in v = 4510 yards, V = 100 degrees, G = 44 degrees, and g = x yards into the sine rule gives:

sin 100 / 4510 = sin 44 / x.

Cross multiplying gives:

x*sin 100 = 4510*sin 44

Making x the subject gives:

x = (4510*sin 44)/sin 100.

x = 3181 yards (to the nearest yard).

Therefore, Norman and Voyager are 3181 yards apart from each other!!!

The required distance between the Norman and the Voyager is 3181 yards.

Given that,
A ship at sea, the Gladstone, spots two other ships, the Norman and the Voyager, and measures the angle between them to be 44°. The distance between the Gladstone and the Norman is 4510 yards. The Norman measures an angle of 36° between the Gladstone and the Voyager. To the nearest yard, what is the distance between the Norman and the Voyager is to be determined.

What are trigonometric equations?

These are the equation which contains trigonometric operators such as sin, cos.. etc.. In algebraic operation.

Here,
The measure of the angle between Gladstone and the norman,
= 180 - 44 + 36
= 100°

sin(100) / 4510 = sin(44) / x.

x = 3181.12

x ≈ 3181 yards

Thus, the required distance between the Norman and the Voyager is 3181 yards.

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PLEASE HELP
If AD is median in triangle ABC and BD=24, then CD is:

24.
12.
6.
None of the choices are correct.

Answers

 

To solve this problem, let us first define what a median is. A median is a line segment that connects a vertex and the midpoint of the side opposite to that vertex.

In this case, the vertex is point A while the opposing side is side CB. Since it connects to the midpoint of CB, therefore this means that the median AD equally divides side CB into 2 parts.  Since the length side CB is the sum of the lengths side CD and side BD. Therefore this means that:

length of CD = length of BD

length of CD = 24

 

Answer:

 24

Patricia pays $1.19 each to download songs to her MP3 player,if n is the number of downloaded songs, which equation represents the cost C in dollars?

A.C=1.19n
B.n=1.19c
C.C=1.19/n
D.C=n+1.1

Answers

$1.19 each to download songs
n =  number of downloaded songs
C = 1.19n

The answer would be A. C = 1.19n. Hope this helps!

The perimeter of a triangle is 240. Its sides are proportional to 3:4:5. The largest side of the triangle is ?

Answers

If the sides are proportional you can use the formula:

3x + 4x + 5x = 240 and solve for x.

which is:  12x = 240
x = 20

The longest side is 5x, so the longest side is 100.

Find the point on the line y = 3x + 2 that is closest to the origin.

Answers

1.
the slope of the line y=3x+2 is the coefficient of x, that is 3.

2.
the slope of any line perpendicular to the line y=3x+2, is m, such that:

[tex]3*m=-1[/tex]

so [tex]m= \frac{-1}{3} [/tex]

3. 
so any line with equation y=-1/3x+k is perpendicular to y=3x+2.

moreover, the line y=-1/3x (so k=0) is the line passing through the origin
(0, 0) and perpendicular to y=3x+2


4. This means that the closest point of y=3x+2 to the origin is the intersection point of lines y=3x+2 and y=-1/3x

5.
to find this point:

3x+2=(-1/3)x
x(3+1/3)=-2
x(9/3+1/3)=-2

x*10/3=-2

[tex]x= \frac{-2*3}{10} = \frac{-6}{10}=-0.6 [/tex]


thus y is :  (-1/3)(-6/10)=0.2



Answer: (-0.6, 0.2)

The point on the line [tex]y=3x+2[/tex] that is closest to the origin is [tex](-0.6, 0.2)[/tex].

Given,  [tex]y=3x+2[/tex], whose slope is [tex]3[/tex].

Let [tex]m[/tex] is the slope of the line perpendicular to the above line.

So,

[tex]3\times m=-1\\m=-1/3[/tex]

Then, the general equation of a line perpendicular line will be [tex]y=-1/3x+k[/tex].

So the equation line passing through the origin [tex](0,0)[/tex] and perpendicular to the line [tex]y=3x+2[/tex] is [tex]y=-1/3x[/tex] , [tex](k=0)[/tex].

Then the closest point will be the intersection point of these two lines, i.e.

[tex]3x+2=-1/3x\\9x+6=-x\\10x+6=0\\x=-0.6[/tex]

and

[tex]y=\dfrac{-0.6}{3} \\y=0.2[/tex]

Therefore, the point on the line [tex]y=3x+2[/tex] that is closest to the origin is [tex](-0.6, 0.2)[/tex].

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A continuous random variable is a random variable that can: ?assume any value in one or more intervals ?assume no continuous random frequency ?have no random sample ?assume only a countable set of values

Answers

By definition, a continuous random variable can assume any value within a defined interval. It cannot make sudden jumps in value, and it is not defined by discrete values.

Evaluate the given answers.
1. Assume any value in one or more intervals.
   CORRECT

2. Assume no continuous random frequency.
   INCORRECT

3. Have no random sample.
    INCORRECT

4. Assume only a countable set of values.
    INCORRECT

A continuous random variable can assume any value within one or more intervals and result from measurements, providing an uncountable range of possibilities. Continuous random variables are commonly used in many fields, including reliability engineering and standardized testing, to assess continuous data.

A continuous random variable is a type of random variable that can assume any value within one or more intervals. Unlike discrete random variables, which take on countable values, continuous random variables result from measurements rather than counts. For instance, the temperature of a day measured by a thermometer or the height of students measured by a ruler are examples of continuous random variables. The values are uncountable as they lie on a continuum, like the speed of an automobile or the duration of a telephone call.

Two main characteristics of a discrete probability distribution function include the fact that each probability must be between zero and one, inclusive, and the sum of the probabilities should equal one. These rules do not apply to continuous random variables, which instead use probability density functions to describe their distributions.

Continuous random variables play significant roles in numerous applications such as assessing baseball batting averages, calculating IQ scores, and evaluating SAT scores. In the field of reliability engineering, a variety of continuous random variables are essential for analyzing the life expectancy of components.

Kholdy enterprises' outstanding bonds mature in 6 years, have a par value of $1,000, and make an annual coupon payment of $60. the market yield on the bond is currently 10%. what is the bond's price?

Answers

You are given Kholdy enterprises' outstanding bonds that mature in 6 years with a par value of $1,000. You are also given the an annual coupon payment of $60. You are also given the market yield on the bond that is currently 10%. The bond's price is $825.79. What it can infer from Kholdy enterprises' is that the $825.79 is a discount bond since its price is less than $1,000, its par value.


A total of 

644

 tickets were sold for the school play. They were either adult tickets or student tickets. There were 

56

 fewer student tickets sold than adult tickets. How many adult tickets were sold?

Answers

a + s = 644
s = a - 56

a + (a - 56) = 644
2a - 56 = 644
2a = 644 + 56
2a = 700
a = 700/2
a = 350 <=== adult tickets

s = a - 56
s = 350 - 56
s = 294 ...student tickets

A prism measures base 15cm. Height 100mm. Length 40cm. Calculate volume of prism cm3

Answers

The volume of the prism depends on the shape of its base. Since you haven't mentioned whether the base is a triangle or a rectangle, I'll solve it both ways.

1- If the base is a rectangle:
volume = length x width x height = 15 x 10 x 40 = 6000 cm^3

2- If the base is a triangle:
volume = area of base x height = (0.5 x 15 x 40) x 10 = 3000 cm^3

Find a formula for the general term of the sequence, assuming that the pattern of the first few terms continues. 2, 9, 16, 23

Answers

It increases by 7 and it's arithmetic progression:
Where d = 7
a = 2

and the formula will be

[tex] a_{n} [/tex] = a + d (n-1) = 2 + 7*(n-1)

Where n starts from 1 and continues to the infinity
This is an arithmetic sequence which means all of these terms are all the same distance from one another. 
an=a1+d(n-1)
an=2+7(n-1)
an=2+7n-7
Answer: an=7n-5

A house is 51.0 ft long and 44 ft wide, and has 8.0-ft-high ceilings. what is the volume of the interior of the house in cubic meters and cubic centimeters?

Answers

volume = l x w x h

51 x 44 x 8 = 17952 cubic feet

1 cubic foot = 0.0283168 cubic meters

17952 x 0.0283168 = 508.343 cubic meters

1 cubic meter = 1,000,000 cubic centimeters

508.343 x 1000000 = 508,343,000 cubic centimeters

a squared + b - c ÷ m , if a=6 , b= 8 ,c = 5 and m = 3. Is it 12 , 13, 14, or 15?

Answers

Hello there!

A^2 + B - C / M; A = 6, B = 8, C = 5, M = 3.
Plug in our numbers.

6^2 + 8 - 5 / 3
36 + 8 - 5 / 3
44 - 5 / 3
39 / 3
13.

Your answer is 13.

I hope this helps!
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