Adding & Evaluate 6 + 2 - (-1) + (-8).

Mathematics College

Adding & Evaluate 6 + 2 - (-1) + (-8).

Answers

Answer 1

Answer:

0.66071428571429

Step-by-step explanation:

Answer 2

Answer:

the answer should be 1

Step-by-step explanation:

Remove parentheses.

6+2−(−1)−8

Multiply −1 by −1.

6+2+1−8

Add 6 and 2.

8+1−8

Add 8 and 1.

9−8

Subtract 8 from 9.

Related Questions

What is the probability of getting a vowel if you randomly pick a letter from the English alphabet?

Answers

60% because theres 6 vowels

Visa charges 24.5% on the balance each month. Find the new balance for $2000 after I month

Answers

Answer:

I think $490

Step-by-step explanation:

Don't quote me on that

8. A bakery is collecting data to investigate how changing the price charged for a loaf of bread
affects the bakery's daily profit. The graph shows the data the bakery has collected.
Bread Price vs. Daily Profit
1000
800
600
.
Daily Profit (Dollars)
.
.
400
.
.
200
0
1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00
Price for One Loaf of Bread (Dollars)
Which quadratic function is the BEST model for the data?
A
8(1-4) - 800
В.
86
4) - 800
С
20001 - 1) --- 800
D
3000
4)- 800

Answers

The function that best models for the data is y = -200 (x-4)^2 + 800.

What is a function?

A function is a mathematical expression that describes how factors are related. In this case, how the price is related to the profit.

How to determine if a function models the data?

The best way to determine this is to solve the expression and verify if the answer is correct.

For example, we know that at 4 (x) dollars, the daily profit is $800 (y). Let's now the different options:

y= -8 (x+4)^2 + 800y= -8 (4+4)^2 + 800y= -8 (8)^2 + 800y= -8 (36) + 800y=-8 (288) + 800y= -2304 + 800y= -1504

y= -8 (x-4)^2 + 800y= -8 (4-4)^2 + 800y= -8 (0)^2 + 800y= -8 (0) + 800y= 0 + 800y= 800

y= -200 (4+4)^2+ 800y= -200 (8)^2 + 800y= -200 (36) + 800y= -200 (36) + 800y= -7200 + 800y= -6400

y= -200 (x-4)^2 + 800y= -200 (4-4)^2 + 800y= -200 (0)^2 + 800y= -200 (0) + 800y= 0 + 800y= 800

This means B and D are possible options, however, when verified with other results such as $6 the correct one is option D.

Learn more about bakery in: https://brainly.com/question/16421624

The quadratic equation is given by y = -200x² + 1600x - 2400.

Quadratic equation formula

The standard form of the quadratic equation is:

y = ax² + bx + c

Where a,b,c are constants.

Let y represent the daily profit for x bread price.

At point (2, 0):

0 = a(2)² + b(2) + c

4a + 2b + c = 0 (1)

At point (4, 800):

800 = a(4)² + b(4) + c

16a + 4b + c = 800 (2)

At point (6, 0):

0 = a(6)² + b(6) + c

36a + 6b + c = 0 (3)

From all the equations:

a = -200, b = 1600, c = -2400

The quadratic equation is given by y = -200x² + 1600x - 2400.

Find out more on quadratic equation at: https://brainly.com/question/1214333

Roberto's parents opened a savings account for him by depositing $250 on his birthday. The account earns simple interest at an annual rate of 5%. How much will be in Roberto's account after 5 years

Answers

Answer:1250

Step-by-step explanation:250x5=1250

Charles asked his teammates how many hours they practiced swimming during the week. He recorded his data in the table below and used the shaded columns to calculate three sample means. What is the range of the values for the sample means?

Hours of Swim Practice
4
5
3
6
3
8
3
5
4
7
6
2
4
5
3
5
2
3
4
6
1
2
3.75
4.75

Answers

Answer: B

Step-by-step explanation:

took test :)

Answer:

The answer is B

Step-by-step explanation:

Evaluate the expression if a = -2, b= 7. and c= -3
ac + b=

Answers

Answer:

Step-by-step explanation:

plug in the numbers

-2(-3) + 7 = ?

6 + 7 = ?

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

double the second number, the sum is 34."
a. Write an equation that represents this clue. Then, find two possible pairs of
numbers Diego could be thinking of.
b. Diego then says, "If we take half of the first number and double the second, the
sum is 14."
Write an equation that could represent this description.
c. What are Diego's two numbers? Explain or show how you know. A coordinate
plane is given here, in case helpful.
20
18
16
14
12
second number
10
8
6
4
2
2 4 6 8 10 12 14 16 18 20
first number

Answers

First number is the answer

Answer:

a.) 3x+2y=34 is the equation. 2 pairs could be 10,2 and 8,5.

b.) .5x+2y=14

c.) 8,5

Step-by-step explanation:

because both 8 and 5 work in both equations 3(8)+2(5)=34

.5(8)+2(5)=14

A team of communication scholars conducted a study on the effects of media consumption on aggressive behavior. Forty-eight subjects stayed in a lab for two days. Twenty-four of the subjects are randomly assigned to a condition in which they are not permitted to consume any media that period. The other twenty-four are allowed to consume media whenever they want. At the end of the two days, the subjects finish a task that involves viewing the same tv episode, then identifying as many aggressive behaviors as possible.
For each of the studies, please indicate the following:
1. What is the independent variable? The effects of media consumption
2. Is there more than one IV? Abstinence from Media Consumption and Media Consumption Continued Use
3. Is the IV a continuous or categorical variable? See Above
4. What is the dependent variable? (for correlation, list all variables here and ignore the IV questions)
~ The dependent variable is aggressive behavior
5. Is the DV a continuous or categorical variable ? Continuous ~ measured numerically, has an infinite number of possible values
6. What type of design is being used? Experimental Design
7. What is the appropriate statistical test given the types of variables in this example?

Answers

Answer:

A.) The Independent variable is media consumption. ;

B.)

1.) Abstinence from media consumption

11.) Continued consumption of media

C.)

Categorical Variable ;

D.)

Dependent variable is Aggressive behavior ;

E.)

The dependent variable is a continous numerical variable

F.)

Experimental Design.

Step-by-step explanation:

The Independent variable are those variables which causes a change in the measured or dependent variable.

The dependent t variable is the measured variable whose change is triggered by the independent variable.

Categorical Variables are non-numeric labels while the quantitative variables are numeric labels.

Experimental designs usually divides subjects into two or more treatment groups whrebt the effects of applied treatment is observed across the different groups.

WILL GIVE BRAINLIEST

Answers

Answer:

Step-by-step explanation:

seen that before

Answer:

second question-heres answer

v20

convert v20 to a decimal 4.4721...

find the number in the hundredth place 7 and look one place to the right for the rounding digit 2.round up if this number is greater than or equal to 5 and round down if it less than 5

4.47

3. People with type O-negative blood are universal donors (any patient can
receive a transfusion of O-negative blood). Only about 6.6% of the American
population has O-negative blood. If 270 unrelated people give blood in a certain
week, how many of these people do we expect to be universal donors? (Hint:
Remember to convert percent numbers to decimals before multiplying.)
PLEASE HELP

Answers

Answer:

We expect 17.82, that is, approximately 18 people to be universal donors.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are universal donors, or they are not. The probability of a person being an universal donor is independent of any other person. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

[tex]E(X) = np[/tex]

The standard deviation of the binomial distribution is:

[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]

Only about 6.6% of the American population has O-negative blood.

This means that [tex]p = 0.066[/tex]

If 270 unrelated people give blood in a certain week, how many of these people do we expect to be universal donors?

This is E(X) when [tex]n = 270[/tex]. So

[tex]E(X) = np = 270*0.066 = 17.82[/tex]

We expect 17.82, that is, approximately 18 people to be universal donors.

1.Martin runs 3/4 mile three days a week. How many miles does he run in four weeks?
2.Teresa measures 5/8 foot of ribbon for a costume. She needs seven pieces of ribbon with that same length. What is the total length of ribbon Teresa needs to make all the costumes?
3.Oscar spent 2/3 hour each night doing homework for five nights this week. How many hours of homework did Oscar complete this week?
4.Alexandra is following a recipe that requires 3/4 cup of water. She needs to make 10 servings. How many cups of water does Alexandra need?

WHO EVER ANSWERS GETS 75 POINTS.

Answers

Answer:

1) 9 miles. 2) 4.375. 3) 6. 4) 27.973.

Find the domain of the graphed function

Answers

The domain ...the answer is B

Find the value of x
NEED HELP ASAP PLS NO FILE DROPS OR I WILL REPORT THANKS

Answers

Answer:[tex]x=15[/tex]

Step-by-step explanation:

Angles that are opposite from each other are going to be the same in this case.

Let's plug in 15 into x

[tex]4(15)+8\\60+8\\68[/tex]

6.5 ÷ ___________ = 0.065

Answers

Answer: 6.5 ÷ 100 = 0.065

6.5 x 1 = 0.065 this is the answer

WILL GIVE BRAINLIEST PLEASE HELP: In rectangle ABCD the diagonals intersect each other at point O and m ABD = 30 degrees. Find BC if AC = 16 in.

Answers

Answer:

Step-by-step explanation:

We know that ABD is 30 degrees. To find BC, we need to use sin.

Equation:

BC = 16*sin(30 degrees) I recommend using a calculator to find the sine if you don't know what it means and how to use it. Sine is basically the side length opposite of the angle over the hypotenuse of the right triangle.

BC = 16*0.5

BC = 8

Sorry, I couldn't find an image.

Hope this helps!

you have $63.50. you earn additional money by raking leaves. you purchase a sweatshirt $44.99 and you have $53.51 left. how much money did you earn raking leafs?

Answers

$93.50 is the answer

What is the area of the rectangle above?
A.
84 square units
B.
19 square units
C.
38 square units
D.
78 square units

Answers

=13 x 6
=78 unit squares

Please help i have been trying to figure this out for like an hour

Answers

Answer:

Step-by-step explanation:

Since x varies directly as y, the ratio of x to y remains the same. Let the value of x when y=4 be a. Then we have

[tex]\dfrac {7 \frac12} {10} = \dfrac a4[/tex]

We can cross multiply to get that

[tex]10a = 30, \text{so } \boxed{a=3}[/tex]

A easy question so you get points.

Who won the presidential election
A. Donald Trump
B. Bidden Harris

Answers

Answer:

This recent election its Biden.....

lol thx

Follow me!!!!

Answer:

Biden Harris

Step-by-step explanation:

Blake is cutting a piece of rope into fourths. if each piece is 16 inches long, what is the length of the entire rope?

Answers

Answer:

64inches.

Step-by-step explanation:

Let x represent the length of entire rope.

Division Equation:

\frac{x}{4} = 16

\frac{x}{4} X 4 =16x4 (Multiply each side by 4)

x=64

Therefore, length of entire rope is 64 inch.

Mary sells fruit with four of her friends. If the earnings are divided evenly
much must the business make in order for each person to earn $30?
In the problem above, how many partners are included in this business?

Answers

There are 5 people running the business (Mary + her four friends). In order for each of them to earn $30, the business must make $150 (30x5).

David just accepted a job at a new company where he will make an annual salary of $69000. David was told that for each year he stays with the company, he will be given a salary raise of $2500. How much would David make as a salary after 4 years working for the company? What would be his salary after t t years?

Answers

Answer:

After 4 years working for the company, he would make $79,000 of salary.

His salary after t years will be:

[te]S(t) = 69000 + 2500t[/tex]

Step-by-step explanation:

David just accepted a job at a new company where he will make an annual salary of $69000. David was told that for each year he stays with the company, he will be given a salary raise of $2500.

This means that after t years, his salary will be given by:

[te]S(t) = 69000 + 2500t[/tex]

How much would David make as a salary after 4 years working for the company?

[te]S(4) = 69000 + 2500*4 = 69000 + 10000 = 79000[/tex]

After 4 years working for the company, he would make $79,000 of salary.

PLS HELP WILL GIVE BRAINIEST Which triangle makes this statement true?

Answers

C. Triangle KLN
It has the same measurements as the triangles presented

Need help with this one:)

Answers

Answer:

1024 sq inches

Step-by-step explanation:

Surface area is the area of all added together.

So: 2(24 * 10 + 10 * 8 + 24 * 8)

2(240 + 80 + 192)

Answer: 1024

write a multiplication equation and a division equation that represents the question how many 3/8 are in 5/4

Answers

Answer: 3

Step-by-step explanation: double the 5 and the 4(to have the same denominator as the 8)

Caroline earns $139.50 for 6 hours of work. If she makes a constant hourly wage, which table represents the relationship between the number of hours she works and her total earnings?

Answers

Answer:

Table A.

Step-by-step explanation:

$139.50 / 6 hours = $23.25 an hour

1 hour of work = $23.25 earned