Evaluate each expression if a = -2, b=3, and c = 4.2.

1. a – 2b + 3c

2. 2a + (6 + 3)^2

Answers

Answer 1

Answer:

2.677

Step-by-step explanation:

1) a-2b+3c

(-2)-2(3) +3(4.2)-4-6+12.6-10+12.62.6

2) 2a+(6+3)²

2(-2)+(9)²-4+8177

Related Questions

answer this equation-3x+2<8

Answers

Answer:

x > -2

Step-by-step explanation:

-3x+2<8

Subtract 2 from each side

-3x+2-2<8-2

-3x<6

Divide each side by -3, remembering to flip the inequality

-3x/-3 > 6/-3

x > -2

Hey there!☺

[tex]Answer:\boxed{x>-2}[/tex]

[tex]Explanation:[/tex]

[tex]-3x+2<8[/tex]

Let's subtract 2 from both sides of the inequality.

[tex]-3x+2-2<8-2\\-3x<6[/tex]

Now divide both sides by -3.

[tex]\frac{-3x}{-3}<\frac{6}{-3}[/tex]

Simplify 6/-3. Also remember that dividing a positive with a negative will give us a negative.

[tex]6/-3=-2[/tex]

[tex]x>-2[/tex]

Hope this helps!

Jorge asked 15 of his classmates how many different states they lived in. The results are shown in the the dot plot.

Answers

Using the dot plot, it is found that the correct option is:

Four out of 5 students have lived in only 1 or 2 states.

What is a dot plot?The dot plot shows the number of times each measure appears in the data-set.

Hence:

7 classmates have lived in one different state.5 classmates have lived in two different states.2 classmates have lived in three different states.1 classmate has lived in five different states.

That is, 12 out of 15, that is, four out of five students have lived in either 1 or 2 different states, hence the third option is correct.

To learn more about dot plot, you can take a look at https://brainly.com/question/24912483

what examine the rotation. which best describes point D​

Answers

Answer:

center of rotation

Step-by-step explanation:

Solve the following equation: 6x - 3x + 13 = 7 + 9x - 6

Answers

Answer:

x = 2

Step-by-step explanation:

Answer: 2

Step-by-step explanation:

In a social club, the ratio of men to women is 5: 7. There are 595 women. How
many men are there?

Answers

Answer:

52

you take 5 ÷ it by 7 the ×it by 595

A ratio is an ordered pair of numbers a and b written as a/b where b is not equal to zero.

if the number of women in the social club is 595 then the number of men in the social club is 425.

What are ratios and proportions?

A ratio is an ordered pair of numbers a and b written  as:

a / b where b does not equal 0.

A proportion is an equation in which two ratios are equal to each other.

We have,

The ratio of men to women:

= 5:7

= 5/7

Let,

The number of men = 5x

The number of women = 7x

Now,

If the number of women = 595

We have,

7x = 595

Multiplying both sides by 5/7 we get,

5/7 x (7x) = 5/7 x 595

5x = 5/7 x 595

5x = 5 x 85

5x = 425

This means if there are 435 men in the social club if the number of women is 595.

Thus if the number of women in the social club is 595 then the number of men in the social club is 425.

Learn more about ratios and proportions here:

https://brainly.com/question/2462048

#SPJ2

so uh who knows this??!

Answers

Answer:

Your answer is going to be d

Step-by-step explanation:

Add up the angles you already have and subtract that sum from 180

180 - 133 = 47

Answer:

D

Step-by-step explanation:

39+94=133

180-133=47

(D2+6d+9)+(d3-6d+9) ​

Answers

You can’t add d2 or d3 so ignore it for now u will subtract -6d from +6d to get 0 then add 9+9
Answer:
d3+ d2 + 18

D3 has to be in front because it has a larger exponent

If the area of triangle is 1200 sq m and its length is 60 m , find the breadth .

Answers

Answer:

20 m

Step-by-step explanation:

The area of a triangle is 120 sq m

The length is 60 m

We are required to find the breadth

Therefore to find the breadth of the traingle the formular below will be applied

Area= length × breadth

120= 60 × breadth

Breadth= 120/60

= 20 m

Hence the breadth of the traingle is 20 m

Please help me. One prepaid cell phone company charges $0.027 per minute and a $2 monthly fee. Another company charges $0.031 per minute with no monthly fee. For what number of minutes per month are the charges for the first company cheaper? Please explain to me

Answers

Answer: >500

Step-by-step explanation:

What is 5 2/8- 3 1/16= ?​

Answers

Answer:

2 and 3/16

Step-by-step explanation:

2/8-1/16 is 3/16

5-3=2

Answer:

35/16 2.1875

Subtract.

5 2/8- 3 1/16 = 2.1875 (35/16 as fraction)

That is the answer.

which set of angles shares rayAF as a common side?

Answers

BAF and FAD I took the test !


Davis saved $1000 and then found a savings account that will give him 10% interest per year.
Represent the money in his account after n years.
1) Arithmetic or Geometric:
2) Common difference/ratio:
3) Recursive Formula:
4) Explicit Formula:

Answers

Answer:

1000x0.1=n

Step-by-step explanation:

first year he had 1000

second year they times the 1000 by .1 because thats ten percent

A jar contains 7 blue marbles, 3 red marbles, and 3 green marbles. You pick one marble without looking. What is the probability that the marble will be red? Answer as a fraction in the simplest form.

Answers

Answer:

7/13

Step-by-step explanation:

there are 13 marbles altogether and there is blue marbles the most

What is the solution to -3m = -15

Answers

Answer:

[tex]m=5[/tex]

Step-by-step explanation:

[tex]-3m=-15[/tex]

Divide both sides by -3:

[tex]\frac{-3m}{-3}=\frac{-15}{-3}[/tex]

[tex]m=5[/tex]

Answer:

[tex]m = 5[/tex]

Step-by-step explanation:

Solve for [tex]m[/tex] :

[tex]-3m = -15[/tex]

-Take [tex]-3m[/tex] and divide it on both sides of the equation:

[tex]\frac{-3m}{-3} = \frac{-15}{-3}[/tex]

[tex]m = 5[/tex]

Therefore, the value of [tex]m[/tex] is [tex]5[/tex].

Please answer this as soon as you can : Evaluate 5/18 + 5/6

Answers

The answer to the question is 20/18.

Answer:

1 1/9

Step-by-step explanation:

5/18 + 5/6

Get a common denominator of 18

5/18 + 5/6 *3/3

5/18 + 15/18

20/18

18/18 + 2/18

1 1/9

0.7+y=−1.34 please and thank you

Answers

Answer:

0.64

Step-by-step explanation:

1) Subtract 0.7 from 1.34 and you will get 0.64

Hope this helps!

Find the measure of A
Options
-14
63
96
44
I need help ASAP

Answers

Answer:

Step-by-step explanation:because all angles in a triangle add up to 180° 100°+30°=130° 180°-130°=50°


Which equation represents a function? Select all that apply.

Answers

Y=x^2-3 is the answer

Four times the smallest of three consecutive integers is three more than three times the largest. What is the middle integer?

Answers

Let, first integer is x.

Therefore, other two are x+1 , x+2 .

Now, mathematical expression of given conditions is :

4x + 3 = 3(x+2)

4x + 3 = 3x + 6

x = 3.

So, the consecutive numbers are 3 , 4 and 5.

Therefore, the middle integer is 4.

Hence, this is the required solution.

x/6 =8 [tex]x\5frac{x}{y} =8[/tex]

Answers

Steps to solve:

x/6 = 8

~Simplify

1/6x = 8

~Multiply 6 to both sides

x = 48

Best of Luck!

According to a newspaper report, A 63 year old man has rowed around the world without leaving his living room. He clocked up 24084 miles on a rowing machine that he recieved for his 50th birthday. Roughly how many miles per year has he rowed since he was given the machine?

A) 200
B) 500
C) 1000
D) 2000
E) 4000

(can i get it with the full working out please)​

Answers

So he has had the machine for 13 yrs
24084/13 is roughly 2000 so I would say D

The number of miles per year that he has rowed since he was given the machine will be Roughly 2000. Then the correct option is D.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

A 63-year-old man has rowed around the world in his living room, according to a newspaper story. On a rowing machine that he received for his 50th birthday, he logged 24084 miles.

The number of miles per year is calculated as,

⇒ 24,084 / (63 - 50)

⇒ 24,084 / 13

⇒  1852.61 ≈ 2,000

The number of miles per year that he has rowed since he was given the machine will be Roughly 2000. Then the correct option is D.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Simplify : 15y - 10 + y(2 + 9) -8

Answers

Answer:

Simplified expression is 26y - 18

Step-by-step explanation:

15y - 10 + y(2 + 9) - 8

15y - 10 + 2y + 9y - 8

26y - 18

the answer is 4y+8 i hope this helped!

The graph shows the motion of a train on a railroad. Which statement describing the motion of the train is best supported by the graph? Math item stem image CLEAR CHECK The train is traveling on a level surface. The train is moving at a constant positive speed. The train is not moving. The train track is straight.

Answers

Answer:

  The train is not moving

Step-by-step explanation:

The graph does not show the train's motion. It shows the train's position, which is constant. ("Distance" is not a measure of motion. It is a measure of position.)

If the train's position is constant, it is not moving.

solve the literal equation for x
t=10+7x-qx​

Answers

Answer:

Step-by-step explanation:

7x - qx + 10 = t

7x - qx = t - 10

x(7 - q) = t - 10

x = (t - 10)/(7 - q)

Jasmine spends exactly £120 on three types of plants: poisoned ivy, deadly nightshade and triffids. Poisoned ivy plants cost £2 each, deadly nightshade plants cost £9 each and triffids cost £12 each. She buys twenty plants in total, including at least one of each type. How many triffids did she buy?

Answers

Answer:

9/5

Step-by-step explanation:

2×9×12=216 so216/120 =9/5

Jasmine bought approximately 4 triffids.

We have,

We know that Jasmine bought a total of twenty plants and that she purchased at least one of each type.

Let's assume she bought x triffids.

From the given information, we can determine the number of poison ivy plants and deadly nightshade plants she bought:

Number of poisoned ivy plants = Total plants - (Number of deadly nightshade plants + Number of triffids)

Number of poisoned ivy plants = 20 - (1 + x) = 19 - x

Number of deadly nightshade plants = Total plants - (Number of poisoned ivy plants + Number of triffids)

Number of deadly nightshade plants = 20 - (1 + (19 - x)) = 20 - (20 - x) = x

We can now set up an equation based on the total amount Jasmine spent:

Total cost = (Number of poisoned ivy plants * Cost per poisoned ivy plant) + (Number of deadly nightshade plants * Cost per deadly nightshade plant) + (Number of triffids * Cost per triffid)

£120 = (19 - x) * £2 + x * £9 + x * £12

Simplifying the equation:

£120 = £38 - £2x + £9x + £12x

£120 = £38 + £19x

£82 = £19x

Dividing both sides of the equation by £19:

£82/£19 = x

x ≈ 4.32

Since we can't have a fractional number of plants, we'll round down to the nearest whole number.

Therefore,

Jasmine bought approximately 4 triffids.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

The complete question:

Jasmine spent a total of £120 on buying three types of plants: poisoned ivy, deadly nightshade, and triffids. Poisoned ivy plants cost £2 each, deadly nightshade plants cost £9 each, and triffids cost £12 each. She bought a total of twenty plants, ensuring that she purchased at least one of each type.

How many triffids did Jasmine buy?

Can somebody help me wit this

Answers

........??.??.?.?.?.?.?..??.?.?.?.?.?.

screen shot below evaluating functions please help

Answers

Answer: I believe the answer is 5.

Step-by-step explanation:

f(1) = -(-1)^2 -4(-1)

f(1) = 1^2 + 4

f(1) = 1 + 4

f(1) = 5

Hope this helps!

Find the sum (9r2+4r-7)+(3r2-3r)

Answers

The sum would be 25r-7

Answer:

12r^2 +r-7

Step-by-step explanation:

Please help :)
Name the intersection of the two planes in the image below.

Answers

Answer:

↔ ORK

Step-by-step explanation:

The intersection of the two planes is the line

Line ORK

↔ ORK

n-2÷7=2 ANSWER IT 50 POINTS

Answers

Answer:

5.5

Step-by-step explanation:

n-2÷7=2

n-3.5=2

n=2+3.5

n=5.5

Answer:

n = 16  ≅ 2.29

     7

Step-by-step explanation:

n - 2 ÷ 7 = 2

n - 2 = 14

n = 14 + 2

      7      7

n = 16

     7

Other Questions
Consider the following two people:Person 1A young college student, who is fully invested in life, has a lot of close friends and a wonderfulrelationship with his family. He is a member of two va city sports teams and part of a small garage bandas well. He lives in a good neighborhood and is health Tragically his life is cut short by a car accident.Person 2:An older individual is in his 90's but has been alone most of his life. He's never had many friends andnever had any that he could truly count on. He's battled with drug addiction and has lost most of hisability to control his body. He's been most bedridden the last two years of his life.1 pointUse the information above to help answer the question: Which of thesetwo fulfilled his life expectancy? *O Person 1O Person 2O Both Person 1 and 2O Neither Person 1 and 2 What are the agents of erosion? Wind, water, mass wasting, glaciers Flooding, Freezing, melting, fog salt water, human interference Pademics, decreased, increased death rates Charles Darwin's theory of evolution as written in his book on the Origin of Species determined thatO competition among species is like competition in business, the strongest will survive.O inherited traits make people more fit to survive in society and more likely to acquire wealth.O living things evolve and change through natural selection, and the strongest traits survive over time.O all living things pass on their traits, both good and bad, which gives the next generations the will to survive. How many more dollars will you spend if you buy 12 cookies at Charlies Cookies instead of buy 12 cookies at Sams? Sams cookies 6 $8.00 Charlies cookies 4 $7.00 Scientific Notation7.28 x 10^10 Maia wants to left align her paragraphs. Which button does she press?o Which is most likely to cause confusion, hinder thinking, and prevent quick access to resources in a studyenvironment?O phonesO clutterO noiseO laptops Which replacement word for tekeningin paragraph 1 carries a negativeconnotation?A. crowdedB. abundantC. aboundingD. packed Which excerpt from "The Yellow Wallpaper" contradicts the narrator's belief that she is improving?O I really do eat better, and am more quiet than I was.O Life is very much more exciting now than it used to be. You see I have something more to expect, to look forwardto, to watch.O I don't sleep much at night, for it is so interesting to watch developments; but I sleep a good deal in the daytime.O John is so pleased to see me improve! He laughed a little the other day, and said I seemed to be flourishing inspite of my wall-paper. What is an interpretation? The written way the author intended his or her story to be The way a person might understand a story or bring it to life The most popular way a story has been recorded on the screen The process of writing a story and then getting it published interpretation? Algebra 1: A bookstore sells paperback fiction books in excellent condition for $2.50 and in fair condition for $0.50. Write an expression for the cost of buying 'x' excellent-condition paperbacks and 'f' fair-condition paperbacks. A) 2.50x + 0.50f B) 3.00 (x + f) C) 2.50f + 0.50c D) 3.00 + x+ 1. Translate: A number divided into 4 2. Translate: The sum of 2/3 and a number 3. Translate: Drew is "n" years younger than Joe who is 9 years old find the midpoint of the segment with the following endpoints (8,7) and (5,4) How does temperature affect phase changes? When you add a zero to the right of a decimal number, it multiplies its value by 10 (For example, "15" becomes "150"). What similar result happens to the value of a binary number when you add a zero on the right? (For example, "11" would become "110"). how do you write 1:35 am spanish A farmer is attempting to take a chicken across a river in a motorboat while a fox waits on shore with a bag of grain. If the river has a current with a velocity of 2.0 m/s and the boat maintains a speed relative to the water of 4.5 m/s, in which direction (angle) should the farmer point the boat so that the boat follows a straight path directly across the river? What historic document is the Bill of Rights a part of?ObThe Declaration of IndependenceThe Emancipation ProclamationThe ConstitutionThe Pledge of AllegianceOd Lifelike Studios charges a one time sitting fee to take your photograph, then adds 50 cents for each photograph you order. Based on the information given in the graph, how much does Lifelike Studios charge for the sitting fee? If g(x) = 10 + 2x what is g(-3)