what is 20c + 8d + 10c - 5d simplified?

Answers

Answer 1

Answer:

30c  +3d

Step-by-step explanation:

20c + 8d + 10c - 5d

Combine like terms

20c+10c   +8d - 5d

30c  +3d

Answer 2

Answer:

30c + 3d

Step-by-step explanation:

20c + 10c = 30c

8d - 5d = 3d

= 30c + 3d


Related Questions

how do you know if it is a function ​

Answers

Answer:

use the straight line test

Step-by-step explanation:

use your pencil or draw a line horizontally (like this -> I )anywhere on the graph. If it's a function, it will only touch the line at one point no matter where you put the line.

A WAY easier (and faster), way to know if it is a function is to see if there are two of the same x-intercept (which make a vertical line). If there is, then it is NOT a function.

Point O is on line segment \overline{NP} NP . Given OP=8OP=8 and NO=2,NO=2, determine the length \overline{NP}. NP

Answers

Answer: The length of [tex]\overline{NP}[/tex] is 10 units.

Step-by-step explanation:

We are given that,

Point O is on line segment [tex]\overline{NP}[/tex] .

Then, [tex]\overline{NP}=\overline{NO}+\overline{OP}[/tex]   (i)

Since we have given that OP=8 units and NO=2 units .

Now we will substitute these values in (i), we will get

[tex]\overline{NP}=8\ units+2\ units\\\\\Rightarrow\ \overline{NP}=10\ units[/tex]

Hence, the length of [tex]\overline{NP}[/tex] is 10 units.

what is the value of the expression below when z=2?
5z^2-z-4​

Answers

Answer:

14

Step-by-step explanation:

5(2)² - 2 - 4 = 14

The required value of the given expression 5z²-z-4 is 14 when z = 2,

What is the algebraic expression?

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers. Unknown variables, numbers, and arithmetic operators make up an algebraic expression. It contains no equality or inequality symbols.

The expression is given in the question below as:

5z²-z-4​

To determine the value of the expression 5z²-z-4 when z=2, we need to substitute 2 for every occurrence of z in the expression and then simplify the expression.

5z²-z-4 when z = 2 is :

= 5(2²)-2-4

= 5(4)-2-4

= 20-2-4

= 14

Therefore, the required value is 14.

Learn more about the algebraic expression here :

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A custom T-shirt shop spent $250 dollars on equipment and has to purchase the T-shirts at a cost of $2 per shirt. Their total cost, C, can be found using the function C=2T+250 Where T is the number of T-shirts they purchase. If the shop purchased 300 T-shirts, how much was their total cost? PLEASE ANSWER BY 11:59 8-28-2020

Answers

Answer:

So we know the shop spent $250 on equipment and they also purchased 300 T-shirts  for $2 each.

Knowing this, we only have to add to the $250, what they have paid for the  T-shirts.

So if each T-shirt is purchased by $2 and they have bought 300, we multiply:

2 * 300 = $600

So we add the $600 spent on T-shirts to the $250:

600 + 250 = $850

We could also have done it with by replacing T for 300 in C = 2T + 250:

C = 2*300 + 250 --> C = 600 + 250 --> C = $850

Are x+4=5 and 2x+8=10 equivalent equations?

Answers

Answer:

Yes

Step-by-step explanation:

You can find the answer to this question by finding the value of x in both equations.

Let's start off with the first equation: [tex]x+4=5[/tex]

To find the value of x, you're going to have to subtract 4 from both sides. This is because you're looking for the value of only x, not x + 4. To leave x alone, you'd have to subtract 4, leaving that side with just x.

[tex]x+4-4=5-4[/tex]

[tex]x=1[/tex]

The answer to the first equation is x = 1.

Now let's start on the second equation: [tex]2x+8=10[/tex]

Like before, you're looking for x alone and in this equation, 8 is being added to 2x. Although x itself isn't alone, you'll first start off with 2x since you can simplify it thrughout the process. In this equation, you're going to subtract 8 from both sides to leave the variable x alone.

[tex]2x+8-8=10-8[/tex]

[tex]2x=2[/tex]

Now you're left with 2x = 2. Since you're looking for the value of x alone, you're going to divide both sides by 2. Because x is being multiplied by 2(2 times x = 2x) you're going to divide(opposite of multiply), which will cancel out the 2(in 2x).

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

[tex]x = 1[/tex]

The answer to the second equation is x = 1.

Since both equations have the same solution, the answer to your question would be yes.

Hello There!

ANSWER:

Yes

EXPLANATION:

If you want to know if your two equations are equivalent, let's try finding the answer to both of them.

[tex]x+4=5[/tex]

Let's find x.

We all know addition and subtraction. So let's just do

[tex]5-4=x[/tex]

So 5-4 is equal to 1.

So the answer for this equation is

[tex]x=1[/tex]

Let's move on to your second equation.

[tex]2x+8=10[/tex]

Now we must subtract 8 from both sides.

[tex]2x+8-8=10-8[/tex]

And this equals

[tex]2x=2[/tex]

Let's divide the both sides by 2.

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

The fraction [tex]\frac{2}{2}[/tex] is gonna equal one.

So [tex]x=1[/tex]

Now you have your answer for the second equation. Both answers were the same.

So the answer to your question is YES.

Separate 46 into 2 parts so that 1 part is 1 more than twice as much as the first part. Find each part. show work

Answers

Answer:

x=31

y=15

Step-by-step explanation:

let x and y be the 2 part

x+y=46

x-2y=1 ⇒ x=1+2y

substitute :

1+2y+y=46

3y=46-1

3y=45 ⇒ y=45/3=15

x-2y=1

x-2(15)=1 ⇒ x=1+30 ⇒x=31

x= 2 times y(15)+1

y=15

31+15=46

After a series of rainy days, a meteorologist wants to compare the average daily rainfall over the past week between two cities. The daily rainfall totals, in inches, for both cities are given below.

City A = 1.6, 3.8, 2.2, 0.4, 3.4, 2.6, 1.5
City B = 1.2, 4.5, 0.9, 3.6, 2.1, 1.1, 1.3

Which of the following statements are true regarding the data sets above?

I. The mean rainfall of city A is greater than the mean rainfall of city B.
II. The median rainfall of city B is half the median rainfall of city A.
III. The range of rainfall amounts for city A is greater than the range of rainfall amounts for city B.
IV. The median rainfall is less than the mean rainfall for both cities.

II and III

I and III

I and IV

II and IV

Answers

Answer:

I and IV

Step-by-step explanation:

Answer:

I and IV

Step-by-step explanation:

In order to compare the two data sets with the given statements, find the mean, median, and range for each data set.

First, to compare the mean rainfall of the two cities, find the average of each city's inches of rainfall. To find the average, add up the data points and divide by the total number of points, which is 7.

Since the mean of city A is 2.21 and the mean of city B is 2.1, the mean rainfall of city A is greater than the mean rainfall of city B.

Next, determine the median rainfall for each city. To find the median of the data sets, list the data in order of least to greatest and find the middle term.

Hence, the median of city A is 2.2 and the median of city B is 1.3, so the median rainfall of city B is not half the median rainfall of city A.

In order to compare the ranges of rainfall, find the difference between the minimum and the maximum rainfall amounts for each city.

So, the range of rainfall amounts for city A is less than the range of rainfall amounts for city B.

Therefore, the statements which are true regarding the given data sets are I and IV.

What is the value of x?

Answers

Answer:

x = 15

Step-by-step explanation:

Using the Altitude on Hypotenuse theorem

( leg of large Δ )² = (part of hypotenuse below it ) × ( whole hypotenuse )

Thus

x² = 9 × (9 + 16) = 9 × 25 = 225 ( take the square root of both sides )

x = [tex]\sqrt{225}[/tex] = 15

Julie does not want to spend more than $300 on ice skating. Her skates will cost $42, her lessons will cost a total of $56, and the practice time will cost $7.50 per hour. Which inequality should Julie use to determine the maximum number of hours, h, she can practice without spending more than $300?

Answers

Answer:

42+56+7.5h ≤ 300

≤ means less than or equal to and Julie does not want to go over 300 so this would be the correct symbol to use

Decide whether perimeter or area would be used to find the quantity of sheet metal needed for a roof. a-area b-perimeter

Answers

Answer:

you would need to find the area of the quantity of sheet metal needed for a roof

Step-by-step explanation:

The area is used to find the quantity of sheet metal needed for a roof.

We need to check whether the perimeter or area would be used to find the quantity of sheet metal needed for a roof.

What are perimeter and area?

Area: Area is defined as the amount of space that is occupied by any shape, object, or flat surface. The total number of square units that can fit into a shape or object or a flat surface defines the actual area.

Perimeter: The word 'perimeter' is derived from the Greek word 'Perimetron'. 'Peri' means 'around' and 'Metron' means 'measure'. The perimeter of a shape is calculated by adding up the length of all the sides or by measuring the outer boundary of a shape or an object.

Therefore, the area is used to find the quantity of sheet metal needed for a roof.

To learn more about an area visit:

https://brainly.com/question/27683633.

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Solve 6x-3y=-6 for y

Answers

Answer:

y = 2x + 2

Step-by-step explanation:

6x -3y = -6 (get y on one side of the equals sign by substracting 6x from both sides)

-3y = -6x - 6 (divide each side by -3 to get final value of y)

y = 2x + 2

Martha drew the following shape on her
notebook:
What types of angles are included in
the shape she drew?
Plz help

Answers

Answer:

  right angles and obtuse angles

Step-by-step explanation:

We assume that anything that looks like a right angle is a right angle.

The angles at the left end of each horizontal line are right angles.

The angles at the right end of each horizontal line are obtuse angles.

The angle where the diagonal lines meet is a right angle.

The shape contains right angles and obtuse angles.

Combine the like terms: 4y + y + y

Answers

Answer: 6Y

Step-by-step explanation: 4 + 1 + 1 = 6

Answer:

[tex]\huge \boxed{6y}[/tex]

Step-by-step explanation:

[tex]4y+y+y[/tex]

Rewriting y as 1y.

[tex]4y+1y+1y[/tex]

Factoring out y.

[tex](4+1+1)y[/tex]

Adding the numbers.

[tex](6)y[/tex]

What are families of functions and how are they useful?

Answers

Answer:

Function families are groups of functions with similarities that make them easier to graph when you are familiar with the parent function. They're useful because if you know the parent function, you can figure out another function from there

Step-by-step explanation:

which is an equation of the line passing through ( -2,3) and perpendicular to the line 5x-y=12

Answers

Answer:

y = -1/5x + 2.6

Step-by-step explanation:

Put the equation into slope intercept form:

5x - y = 12

-y = -5x + 12

y = 5x - 12

The slope of a perpendicular line will be the opposite reciprocal.

So, the slope of the new line will be -1/5

Then, plug this slope and the given point into the equation y = mx + b to find b

y = mx + b

3 = -1/5(-2) + b

3 = 0.4 + b

2.6 = b

So, the equation will be y = -1/5x + 2.6

Answer:

  x + 5y = 13

Step-by-step explanation:

When the equation of the line is given in the form ...

  ax -by = c

The perpendicular line can be written in the form ...

  bx +ay = constant

where "constant" is found by using the given point values for x and y.

Here, your equation will be ...

  x +5y = (-2) +5(3) = 13 . . . . for point (-2, 3)

The perpendicular line through (-2, 3) is x +5y = 13.

Part C Imagine that the recipe is doubled and that 4 cups of sugar are used. Use
unit rate in A to find how much fout is needed if the recipe is made with4capslof. 1.0
sugar. Show your work.

Answers

Answer:

coordinate plane

Step-by-step explanation:

1.true or false :The vertical axis is called the y-axis-

Is it a ,b,c,d which one?

Answers

The correct answer is -2/3
Because the dot is 4 steps left of 0, and there are 6 steps from 0-1
So its -4/6
And reducing to its lowest term, its -2/3
You’re welcome :)

please help me!!!!!​ i need full answer.

Answers

Answer:

see explanation

Step-by-step explanation:

Using the sum/ difference → product formula

cos x - cos y = - 2sin( [tex]\frac{x+y}{2}[/tex])sin ([tex]\frac{x-y}{2}[/tex] )

sin x - sin y = 2cos ([tex]\frac{x+y}{2}[/tex] )sin ([tex]\frac{x-y}{2}[/tex] )

Given

(cosA - cosB)² + (sinA - sinB )²

= [ - 2sin([tex]\frac{A+B}{2}[/tex])sin([tex]\frac{A-B}{2}[/tex] ) ]² + [ 2cos([tex]\frac{A+B}{2}[/tex] )sin([tex]\frac{A-B}{2}[/tex] ) ]²

= 4sin² ([tex]\frac{A+B}{2}[/tex] )sin² ([tex]\frac{A-B}{2}[/tex] ) + 4cos² ([tex]\frac{A+B}{2}[/tex] )sin² ( [tex]\frac{A-B}{2}[/tex] )

= 4sin² ([tex]\frac{A-B}{2}[/tex] )[ sin² ( [tex]\frac{A+B}{2}[/tex] ) + cos² ( [tex]\frac{A+B}{2}[/tex] ) ← sin²x + cos²x = 1

= 4sin² ( [tex]\frac{A-B}{2}[/tex] ) × 1

= 4sin² ( [tex]\frac{A-B}{2}[/tex] ) = right side ⇒ proven

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.Find the sum of all the multiples of 3 or 5 below 1000.

Answers

Given :

All the natural numbers below 1000 that are multiples of 3 or 5 .

To Find :

The sum of all the multiples of 3 or 5 below 1000.

Solution :

Max multiple of 3 is 999 .

Max multiple of 5 id 995 .

So , number of multiple of 3 is :

[tex]999=a+(n-1)d\\\\999=3+3(n-1)\\\\n=333[/tex]

Similarly for 5 .

[tex]995=a+(n-1)d\\\\995=5+5(n-1)\\\\n=199[/tex]

Now , sum of all multiple of 3 is given by :

[tex]S_3=\dfrac{n}{2}(2a+(n-1)d)\\\\S_3=\dfrac{333\times (2\times 3+332\times 3)}{2}\\\\S_3=166833[/tex]

Also , sum of all multiple of 5 is :

[tex]S_5=\dfrac{n}{2}(2a+(n-1)d)\\\\S_5=\dfrac{199\times (2\times 5+198\times 5)}{2}\\\\S_5=99500[/tex]

Therefore , total sum :

[tex]T=S_3+S_5\\\\T=166833+99500\\\\T=266333[/tex]

Now , there are some common number which we add two times like :

15 , 30 , 60 ......

So , we should subtract the sum of all multiple of 15 from T .

Now , sum of all multiple of 15 is 33165 .

So ,

[tex]T=266333-33165\\\\T=233168[/tex]

Therefore , the  sum of all the multiples of 3 or 5 below 1000 is 233168 .

-29 = 5u+ 6-12u solve for u

Answers

Answer:

u=5

Step-by-step explanation:

-29 = 5u + 6 - 12u        

-6             -6

-35 =5u - 12u

         -7u

-35 = 7u

-35 divided by 7 to get u by itself equals 5

therefore u =5

Step-by-step explanation:

Reorder the terms:

6+5u+ -12u= -29

u =5

The scale from the actual coin to the photo is 8 mm to 2 cm. In the photo, the distance across the coin is 3.25 cm. What is the distance across the actual coin?

Answers

Answer:

13 mm

Step-by-step explanation:

Given that scale from actual coin to the photo is

8 mm to 2 cm.

Distance across the coin in photo  is 3.25 cm.

To find:

Distance across the actual coin = ?

Solution:

First of all, let us learn about scaling concept.

The concept of scaling is used to represent the actual object as as image so that it can be drawn on a paper.

This scaling can result in a smaller image or a bigger image depending upon the size of object.

Here, 8 mm coin is represented as 2 cm coin on the photo.

Let us use unitary method to identify the distance across actual coin to the distance across photo.

2 cm ---- 8 mm

1 cm ------ [tex]\frac{8}{2} = 4\ mm[/tex]

3.25 cm ------- 4 \times 3.25 mm = 13 mm

Someone please help me with 1-4!

Answers

for #1- step 1: Simplify using the inverse of addition or subtraction.

step 2: Simplify further by using the inverse of multiplication or division.

John can drive his car fifteen miles on three gallons of gasoline. How many gallons of gas will John need to drive one hundred ninety-five miles?

Answers

Answer:

39

Step-by-step explanation:

195 ÷ 15 = 13

13 x 3 = 39

Q.Write 3,141,500 in scientific notation.​

Answers

Answer:

3.1415×10⁶

Step-by-step explanation:

Move the decimal point one digit at a time until it is after the first digit.  Count the number of times the decimal point moved.

In this case, we move the decimal point 6 places to the left.  So the scientific notation is:

3.1415×10⁶

Greg bought a new car for £18000.
In the first year the value of the car depreciates by 30%.
In the second year and the third year the car depreciates by 14%
Work out the value of the car after three years.

Answers

Answer:

£9318.96

Step-by-step explanation:

18000×0.7×0.86^(2)=£9318.96

3x-3y=24. Solve for x

Answers

Answer:

x=8-y

Step-by-step explanation:

what is the answer to 5x-7=2x+11

Answers

Hi answer will be x=6
Here is picture how to do it

Answer: 6

Step-by-step explanation:

5x - 7 = 2x + 11

-2x +7   -2x +7 because what you do to one side you have to do to the other

3x = 18 now we have x on one side and nothing else on that side

then divide by 3

18/3 = 6

A watermelon consists of 90% water and 10% pulp. After drying the weight is 20 kg
and 40% water is left. What was the initial weight?​

Answers

Answer: 40kg

Explanation: If 40% water and 10% pulp (Total 50%) is 20kg
Then 90% water and 10% pulp (Total 100%) would be double, so therefore 40kg

To confirm: 10% = 4kg
40kg - 4kg = 36kg
to get from 90% to 40% just divide by 2.25
the answer is 16kg
add on the pulp weight of 4kg = 20kg
Answer: 40kg

Explanation:

Let x be the initial weight:

90% + 10% = x
100% = x

40% + 10% = 20kg
50% = 20kg

=> 100/50= x/20
=> 2 = x/20
=> x = 20 x 2
=> x = 40kg

Therefore the initial weight is 40kg

please help with part b on ex 3&4

Answers

Answer

Ex 3) - b

(-2, 19) (1,4)  

Ex 4) -b

(1, 3) (3, 5)

Which relationships have the same constant of proportionality between yyy and xxx as the equation 3y=27x3y=27x3, y, equals, 27, x?

Answers

Answer:

See Explanation

Step-by-step explanation:

The options are not given; however, the solution is as follows;

[tex]3y = 27x[/tex]

Required

Determine relationships with the same constant of proportionality (k)

[tex]3y = 27x[/tex]

Divide both sides by 3

[tex]\frac{3y}{3} = \frac{27x}{3}[/tex]

[tex]y = \frac{27x}{3}[/tex]

[tex]y = 9x[/tex]

The relationship between y, x and k is:

[tex]y = kx[/tex]

Comparing [tex]y = kx[/tex] with [tex]y = 9x[/tex]; then

[tex]k = 9[/tex]

Hence, any of the options with k=9 answers the question.

Take for instance:

[tex]2y = 18x[/tex]

Dividing both sides by 2 gives

[tex]y = 9x[/tex] and hence; [tex]k = 9[/tex]

Answer:

The answers are A B and C

Step-by-step explanation:

I just got it right

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Calculate the kinetic energy, in joules of a 1160-kg automobile moving at 19.0 m/s. Open question: What can be done to get students to eat healthier foods? Closed question: How would you get students to eat healthier foods? 1. Mandatory nutrition course 2. Offer only healthy foods in the cafeteria and remove unhealthy foods 3. Offer more healthy foods in the cafeteria and raise the prices on unhealthy foods PLEASE HELP DUE IN 30 MINUTES!!!The last two answers for the last question are c. h(g(x))= 1/ (x^2 +4) and d. h(g(x))=1/x^2 +4 Ethans cell phone stopped working, so he needed a new one. what did john muir encourage Roosevelt to do plz hellllppppp -9+n/4 = -7 Explain the difference between mass and weight and how they are measured. what is a product concept? A falcon flew 70 miles in 3 hours. What was the speed of the falcon? A is a plan in which an individual balances available resources and expenses. the healthiest of all countries Latin America in Costa Rica why Two tuning forks having frequencies of 460 and 464 Hz are struck simultaneously. What average frequency will you hear, and what will the beat frequency be Which statement about correlation is FALSE?A) Correlation is a quantitative measure of the strength of a linear association between two variables.B) Correlation is a quantitative measure of the strength of a non-linear association between two variables.C) A correlation of -1 or 1 corresponds to a perfectly linear relationship.D) Correlation is measured by r, the correlation coefficient which has a value between -1 and 1. An entry in QuickBooks Online has been made, but you need to double check the debit and credit entries. What is the quickest way to do this? The Graduate Record Exam (GRE) has a combined verbal and quantitative mean of 1000 and a standard deviation of 200. Scores range from 200 to 1600 and are approximately normally distributed. For each of the following problems: (a) Indicate the percentage or score called for by the problem.(b) draw a rough sketch, darkening in the portion of the curve that relates to the answer, and1) What percentage of the persons who take the test score above 1300?2) What percentage score above 800?3) What percentage score below 1200?4) Above what score do 20% of the test-takers score?5) Above what score do 30% of the test-takers score? Assume the total cost of a college education will be $200,000 when your child enters college in 16 years. You presently have $67,000 to invest. What annual rate of interest must you earn on your investment to cover the cost of your childs college education? a student has two substances at a lab table. He drops both into a graduated cylinder and records his data on the table below. if the density of the gold is almost 4 times more than iron pyrite. approximately how much water will be displaced by the gold? answers: a) 4ml b) 16 c)20 d)1 The left and right page numbers of an open book are two consecutive integers whose sum is 321 Find these page numbers. What is the factorization of the trinomial below?12x2-x-35 Find the value of x if O is between D & B and DO = 15, OB = 3x + 7, and DB = 9x - 2 x= ____