Simplify: 80÷4−2(2+1)2

Answers

Answer 1

Answer:

8

Step-by-step explanation:

Answer 2

Applying the PEDMAS rule, the expression 80÷4−2(2+1)² would be simplified as: 80÷4−2(2+1)² = 2.

What is the PEDMAS Rule?

The PEDMAS rule guides the order of operation when solving a math problem with several operations.

P - parenthesis, E - exponent, D - division, M - multiplication, A - addition, S - subtraction.

To simplify 80÷4−2(2+1)², apply PEDMAS rule:

Solve parenthesis

80÷4−2(3)²

Solve exponent

80÷4−2(9)

Divide

20 −2(9)

Multiply

20 − 18

Subtract

= 2

Therefore, 80÷4−2(2+1)² = 2

Learn more about PEDMAS on:

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Related Questions

To qualify for the long jump competition in track, an athlete must jump a combined distance of more than 16 meters in 3 jumps. Juan jumped 4.76 meters, 5.428 meters, and 5.9 meters. Did Juan qualify for (meet) the competition

Answers

Answer:

Yes.(16.088m combined jump)

Step-by-step explanation:

Combining jumps=4.76+5.428+5.9=16.088

16.088>16

Therefore Juan qualified for the competition

What number comes next 57, 49, 41, 33, 25_

Answers

Answer:

18 I guess

Step-by-step explanation:

because we are subtracting all the number by 8

To find the common difference since all the values go done, we can subtract each value.

57 - 49 = 8

49 - 41 =  8

41 - 33 = 8

33 - 25 = 8

The common difference is 8 so to find the next number, all we need to do is subtract the last number by 8.

25 - 8 = 17

Therefore, the answer is 17

Best of Luck!

How many seconds are in 9 days? Show conversion factors and solve.

Answers

9 days =777600 seconds

1 day=24hrs=1440mins=86440 s
9days=86440(9)= 777600s

Hope this can help.

1. What is the value of 9 squared?
A. 9
B. 18
C. 81
D.36

2. Simplify. Use paper and pencil or a model. 10^3
A. 10
B. 100
C. 1000
D. 10000

3. Use a factor tree to find the prime factorization of 96. Write the prime factorization using exponents.
A. 2^3 • 6^2
B. 2^5 • 4^2
C. 2^5 • 3
D. 3 • 5^2

Answers

Answer:

1 is c

2 is d

3 is a

Step-by-step explanation:

because 9×9 is 81

2 is 10 with 3 0 so 10000

d is a because that is the factor tree

The square of the number 9 is 81.

We need to find the value of 9 squared.

What is the square of a number?

When an integer is multiplied by itself, the resultant number is known as its square number. Basically, a square number is a number that is obtained by the product of two same numbers.

Now, the square of 9 is 9²=9×9=81

Therefore, the square of the number 9 is 81.

Simplify 10³:

That is, 10³=10×10×10=1000

So, the simplified form of 10³ is 1000.

We need to prime factorise 96:

That is, 96=2×2×2×2×2×3

=[tex]2^{5} . 3[/tex]

Therefore, the square of the number 9 is 81.

To learn more about the square of a number visit:

https://brainly.com/question/17749819.

#SPJ2

If f(x) = 3^x
+ 10 x and g(x) = 5x - 3, find ( f - g )(x).

Answers

Answer: 3^x + 5x + 3

Subtract the functions to get that answer

(f - g)(x) = f(x) - g(x)

(f - g)(x) = [ f(x)  ] - [ g(x) ]

(f - g)(x) = [ 3^x + 10x  ] - [ 5x - 3 ]

(f - g)(x) = 3^x + 10x - 5x + 3

(f - g)(x) = 3^x + 5x + 3

Answer:

3^x+5x+3

Step-by-step explanation:

3. Lonnie has a gift card worth $600 for a local entertainment store. Movies cost $20 each and newly released video games cost $50 each. In order to use the gift card, Lonnte must purchase

at least thirteen items. Which is a combination of movies and newly released video games that Lonnie could purchase using his gift card? (2 points)

6 movies and 4 video games

14 movie and 7 video games

O O O O

2 movies and 10 video games

8 movies and 6 video games

Answers

Answer:

8 movies and 6 video games

Step-by-step explanation:

Given

[tex]Gift\ Card = \$600[/tex]

[tex]Movies =\ $20[/tex]

[tex]Video\ Game = \$50[/tex]

[tex]Minimum\ Items = 13[/tex]

Required

Determine the items Lonnie can afford

To solve this question, we make use of trial by error method by taking the options one at a time:

Option 1: 6 movies and 4 video games

This option can not be considered because the number of items is not up to the minimum Lonnte must purchase.

Option 2: 14 movies and 7 video games

[tex]Cost = 14 * \$20 + 7 * \$50[/tex]

[tex]Cost = \$280 + \$350[/tex]

[tex]Cost = \$630[/tex]

This option can not be considered because the cost of purchase is greater than Lonnte's worth of Gift card.

Option 3: 2 movies and 10 video games

This option can not be considered because the number of items is not up to the minimum Lonnte must purchase.

Option 4: 8 movies and 6 video games

[tex]Cost = 8 * \$20 + 6 * \$50[/tex]

[tex]Cost = \$160 + \$300[/tex]

[tex]Cost = \$460[/tex]

Hence, the correct option is 8 movies and 6 video games

ILL GIVE YOU BRAINLIST !!! SHOW WORK

Answers

Answer:

The answer is

15

Step-by-step explanation:

[tex]w(t) = - 2t + 1[/tex]

To find w(- 7) substitute the value of t that's - 7 into w(t) that's for every t in w(t) replace it with - 7

That's

[tex]w( - 7) = - 2( - 7) + 1 \\ = 14 + 1[/tex]

We have the final answer as

15

Hope this helps you

Answer:

w=15

Step-by-step explanation:

w(t)=−2t+1

w(−7)=−2(−7)+1

=14+1

=15

How many dots are in pattern 1

Answers

69 because that’s good and she was like u smell like fart

Evaluate 8 - 12 divided by 2 + 3

Answers

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{ \frac{ - 4}{5} }}}}}[/tex]

Step-by-step explanation:

[tex] \sf{ \frac{8 - 12}{2 + 3} }[/tex]

Subtract 12 from 8

[tex] \dashrightarrow{ \sf{ \frac{ - 4}{2 + 3} }}[/tex]

Add the numbers : 2 and 3

[tex] \dashrightarrow{ \sf{ \frac{ - 4}{5} }}[/tex]

Hope I helped!

Best regards! :D

HELP ME ON THIS QUESTION PLEASE HELP ME I WOULD REALLY APPRECIATE IT THANK YOU

Answers

Answer:

I think c=a-7

Step-by-step explanation:

You would the equation a=b+9 to b=a-9. Then you would add 2 to -9 to get -7. So c=a-7.

The subjects of a study by Dugoff et al. (A-5) were 10 obstetrics and gynecology interns at the University of Colorado Health Sciences Center. The researchers wanted to assess competence in performing clinical breast examinations. One of the baseline measurements was the number of such examinations performed.
The following data give the number of breast examinations performed for this sample of 10 interns.
Intern Number No. of Breast Exams Performed
1 30
2 40
3 8
4 20
5 26
6 35
7 35
8 20
9 25
10 20
Source: Lorraine Dugoff, Mauritha R. Everett, Louis Vontver, and Gwyn E. Barley, "Evaluation of Pelvic and Breast Examination Skills of Interns in Obstetrics and Gynecology and Internal Medicine," American Journal of Obstetrics and Gynecology, 189 (2003), 655-658. 6.4 CONFIDENCE INTERVAL FOR THE DIFFERENCE BETWEEN TWO POPULATION MEANS 177 Construct a 95 percent confidence interval for the mean of the population from which the study subjects may be presumed to have been drawn.

Answers

Answer:

The 95 percent confidence interval for the mean of the population from which the study subjects may be presumed to have been drawn is (19.1269, 32.6730).

Step-by-step explanation:

Intern            No. of Breast

Number        Exams Performed               X²

1                         30                                  900

2                        40                                 1600

3                        8                                        64

4                        20                                   400

5                          26                                 676

6                           35                               1225

7                            35                               1225

8                            20                                400

9                             25                              625

10                                 20                        400

                                  ∑ 259                  ∑ 7515

Mean= X`= ∑x/n= 259/10= 25.9

Variance = s²= 1/n-1[∑X²- (∑x)²/n]

= 1/0[7515- (259)²/10]= 1/9[7515- 6708.1]

= 806.9/9=89.655= 89.66

Standard Deviation= √89.655= 9.4687

Hence

The value of t with significance level alpha= 0.05 and 9 degrees of freedom  is t(0.025,9)= 2.262

The 95 % Confidence interval is given by

x`±t(∝,n-1) s/√n

So Putting the values

25.9± 2.262( 9.4687/√10)

= 25.9 ±2.262 (2.9943)

= 25.9 ± 6.7730

= 25.9 +6.7730=32.6730

25.9 -6.7730= 19.1269

= 19.1269, 32.6730

The 95 percent confidence interval for the mean of the population from which the study subjects may be presumed to have been drawn is (19.1269, 32.6730).

Simplify. 2 x (3-1) + 3​

Answers

Steps to solve:

2 * (3 - 1) + 3

~Simplify

2 * (2) + 3

~Multiply

4 + 3

~Add

7

Best of Luck!

Your family is planning a vacation for spring break and want to get the best deal. Option
A costs $479 per night and includes airfare in the cost. Option B costs $129 per night
but will cost your family $1750 in airfare. How many nights will your family have to stay
in order for the vations to cost the same amount of money?

Answers

Answer:

Step-by-step explanation:

5 nights

The family have to stay 5 nights in order  to cost the same amount of money.

Function in one variable:

Let us consider that family is staying for x night.

Given that, Option A costs $479 per night and includes airfare in the cost.

So that,         [tex]A(x)=479x[/tex]

Also Option B costs $129 per night but will cost your family $1750 in airfare.

So that,      [tex]B(x)=129x+1750[/tex]

for the cost of same amount of money,

              [tex]A(x)=B(x)\\\\479x=129x+1750\\\\479x-129x=1750\\\\350x=1750\\\\x=1750/350=5[/tex]

The family have to stay 5 nights in order  to cost the same amount of money.

Learn more about the linear function here:

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The equation of a line in point-slope form is

y – 5 = 3(x + 1).

A point that lies on this line is

Answers

Answer:

(-1,5)

Step-by-step explanation:

Just took it. Edg 2020. Hope this helps :)

Answer:

its A  (-1,5)

Step-by-step explanation:

Write an equation through: (-1, 2)and (0, -1)

Answers

Answer:

Step-by-step explanation:

(-1 - 2)/(0 + 1) = -3/1 = -3

y + 1 = -3(x - 0)

y + 1 = -3x + 0

y = -3x - 1

1 1/3 divided by 3/5

Answers

Answer: [tex]2\frac{2}{9}[/tex]

Convert all Mixed Numbers into an Improper Fraction

Multiply 1×3 and get 3. Now add 3+1 and get 4.

1 1/3 = 4/3

Do Keep Change Flip (KCF)

Keep: 4/3

Change: ÷ into ×

Flip: 3/5 into 5/3

Multiply

[tex]\frac{4}{3}*\frac{5}{3}=\frac{20}{9}[/tex]

Divide

[tex]\frac{20}{9}=2\frac{2}{9}[/tex]

Q: How does 20/9 equal 2 2/9?

A: Divide 9 and 20 and get 2 r2 (r = remainder). The 2 becomes the mixed number. The remainder becomes the numerator. 9 becomes the denominator.

a rectangular piece of paper 71 cm long and 10m wide . a cylinder is formed by rolling the paper along its length , find volume ??​

Answers

Answer:

Volume=355 cm³

Step-by-step explanation:

I assume it should be 10 cm, not 10 m.  If it is 10 m, everything will have to be adjusted.

Circumference = 2[tex]\pi[/tex]r

10=2[tex]\pi[/tex]r

10÷2[tex]\pi[/tex]=r

1.59=r

V=[tex]\pi[/tex]r²h

V=[tex]\pi[/tex](1.59)(71)

v=355

What is the domain of the function represented by the graph?

Answers

Answer:

im not real sure but i wish i could help

Step-by-step explanation:

9.
Each candy bar from a bin at a candy store costs the same amount. The table shows how many
candy bars four customers purchase from the bin and the total cost of the candy bars.
Customer Number of Candy Bars Total Cost of Candy Bars
1
8
516
2
22
?
3
13
526
?
$32
Which statement is true?
4
A The 22 candy bars purchased by Customer 2 cost $21, and Customer 4 purchased 19 candy
bars for $32
B The 22 candy bars purchased by Customer 2 cost $21. and Customer + purchased 16 Candy
bars for $32
C The 22 candy bars purchased by Customer 2 cost $44. and Customer 4 purchased 19 candy
bars for $32
D The 22 candy bars purchased by Customer 2 cost $44, and Customer 4 purchased 16 candy
bars for $32

Answers

the correct one is A
The Correct Answer Would Be:

A

Find the domain of the function. (Enter your answers using interval notation.) f(s, t) = square root of s^2+t^2.

Answers

Answer:

[tex]S=\{\forall \,s,t\in \mathbb{R}|s\in(-\infty,+\infty), t\in(-\infty,+\infty)\}[/tex]

Step-by-step explanation:

Let be [tex]f(s,t) = \sqrt{s^{2}+t^{2}}[/tex], the range of a square root compehends the subset of positive real numbers plus zero. Likewise, the range of the square of any number has the same subset with all real set as domain. As square root encloses a sum of squares, the domain of the function is:

[tex]S=\{\forall \,s,t\in \mathbb{R}|s\in(-\infty,+\infty), t\in(-\infty,+\infty)\}[/tex]

{(2,4) (3,9) (4,9)} is this a function?

Answers

Yes, considering the points, each input gives one output. Points would not be a function if the same input gave different outputs.

In the context of a graph, the points would be on the same vertical line.

Hope this helps.

頑張って!

Answer:

Yes

Step-by-step explanation:

A function is where there are no two of the same domain.

The Domain is the first coordinate which is x

answer this for 18 points btw theres no fractions decimals just normal find th value of x

Answers

Answer:

x = 28°

Step-by-step explanation:

From the question the figure above is a triangle.

The sum of angles in a triangle add up to 180°

To find the value of x add up all the angles and equate them to 180 to find the value of x

We have

50 + 2x + 3x - 10 = 180

5x + 40 = 180

5x = 180 - 40

5x = 140

Divide both sides by 5

We have the final answer as

x = 28°

Hope this helps you

Determine how many terms should be used to estimate the sum of the entire series with an error of less than 0.001.

Answers

Answer: 9

Step-by-step explanation:

Tₙ ₊ ₁  < 0.001

1 / ( (n+1) 3 +1 ) < 0.001

(n+1)3 + 1 > 1000

(n+1)3 > 999

n+1 > 9.9966

n = 8.9966 => n = 9

I should take n = 9 to be sure that the error is less than 0.001.

What is the center of the circle that has a diameter whose endpoints are (9, 7) and (-3, -5)?

Answers

Answer:

(3, 1)

Step-by-step explanation:

Midpoint of the diameter is the center

Since endpoints are (9, 7) and (-3, -5)

Midpoint will be:

((9 - 3)/2, (7-5)/2) = (3, 1)

So the center is (3, 1)

Answer:

(3, 1)

Step-by-step explanation:

Midpoint of the diameter is the center

Since endpoints are (9, 7) and (-3, -5)

Midpoint will be:

((9 - 3)/2, (7-5)/2) = (3, 1)

or 3/1, 2/2 = (3,1)

So the center is (3, 1)

whats the mean for this data? round to 2 decimals places

Answers

Answer:

1992.38

Step-by-step explanation:

The mean, or average, of a set of data points is found by adding all the values together and dividing by the number of values.

Sum:

1911.56 + 1956.69 + 1903.16 + 1958.82 + 1910.87 + 1983.14 + 2014.12 + 2023.86 + 2057.26 + 2034.21 + 2087.73 + 2067.14 = 23908.56

Divide:

There are 12 numbers, so divide 23908.56 by 12:

23908.56 / 12 = 1992.38

The average is thus 1992.38.

~ an aesthetics lover

Answer:

1992.38

Step-by-step explanation:

To find the mean, simply add all the numbers together, and divide by the amount of numbers there is:

(1911.56 + 1956.69 + 1903.16 + 1958.82 + 1910.87 + 1983.14 + 2014.12 + 2023.86 + 2057.26 + 2034.21 + 2087.73 + 2067.14)/12 = (23908.56)/12 = 1992.38

1992.38 is your answer.

~

A population of beetles are growing according to a linear growth model. The initial population (week 0) is p0=6 and the population after 7 weeks is p7=83 find an explicit formula for the beetle population after n weeks.

Answers

Answer:

P(n)= p0 + 11(n)

Where p0= population of week 0

P(n) = population of n weeks

n= number of weeks

Step-by-step explanation:

Population of beetles in Week 0= 6

Population of beetles in Week 7= 83

From week 0 to week 7 there are 8 weeks.

But subtracting population of week 0 from population of week 7 gives

= 83-6

= 77

After the subtraction, we have 7 weeks remaining.

Dividing the remaining population by the number of weeks remaining

=77/7

= 11

For n number of weeks, population p of beetles

P(n)= p0 + 11(n)

Where p0= population of week 0

P(n) = population of n weeks

n= number of weeks

If the patient is less than 70 years old, the loading dose is 80 Howell Units2 per kilogram of DM. One Howell Unit is equivalent to 0.0020 mg of pure heparin. 2. Calculate how many mg of pure heparin is in 80 Howell Units. Do not worry about the kilograms of DM yet. 00.1600mg The loading dose, in mg of heparin for a 5-year-old with a total body weight of 40 lbs., with 10% bodyfat (that is, 90% of that 40 lbs. is lean body mass). You may also be interested to know that 1 kg = 2.20 lbs. Think about the steps you need to go through to find the correct dose. Remember, first you need to find the dosing mass....

Answers

Answer:

1) 0.16 mg of pure heparin is in 80 Howell units

2) the loading dose, in mg of heparin for the 5-year-old boy is 2.618 mg

Step-by-step explanation:

Given that;

if a patient is less than 70 years of age then loading dose is 80 Howell units square per Kg of DM,

One Howell unit is equivalent to 0.0020 mg of pure heparin

1)

how many mg of pure heparin is in 80 Howell units.

that will be;

80 × 0.0020 = 0.16 mg

therefore 0.16 mg of pure heparin is in 80 Howell units

2)    

First we find the dosing mass

so dosing mass = body weight of the 5year old boy × 90%

from the question his total body weight of 40 lbs and  1 kg = 2.20 lbs

so

dosing mass = 40lbs × 1kg/2.20lbs × 90/100

dosing mass(kg) = 16.37 kg

Now to calculate the Loading dose we say;

Loading dose = dosing mass × heparin required per kg

Loading dose = 16.36 kg × 0.16 mg heparin per 1kg

loading dose = 2.618 mg heparin

therefore the loading dose, in mg of heparin for the 5-year-old boy is 2.618 mg

4+-6 evaluate dnjdjdjsjsjsnsnnsnssnsnsnsnsnsnsnnsnsn

Answers

Adding a negative number is the same as subtracting a positive number.

4 + (-6)

= 4 - 6

= -2

Best of Luck!

1/2 - 1/12=????????​

Answers

Answer:

5/12

Step-by-step explanation:

Subtract.

[tex]\frac{1}{2}[/tex] - [tex]\frac{1}{12}[/tex] = [tex]\frac{5}{12}[/tex]

You can not simplify, so that is your answer.

Here to help!

Answer:

5/12

Step-by-step explanation:

6-1/12

5/12

Hey can someone help me with this?

Answers

Answer:

m∠MON = 24°

Step-by-step explanation:

m∠LOM and m∠MON add up to 90°.

Step 1: Find x

2x + 46 + 3x - 6 = 90

5x + 40 = 90

5x = 50

x = 10

Step 2: Find m∠MON

m∠MON = 3x - 6

m∠MON = 3(10) - 6

m∠MON = 30 - 6

m∠MON = 24°

Other Questions
Read and determine what type of sentence is used in each example. Although England has a better soccer team, their more aggressive style did not pay off, and they lost the tournament. Although my alarm clock went off on time, I was late for school this morning. Colette was upset about losing her cell phone because she had all her contacts in it. Deshawn turned his research project in a week early. 2. After reading the story, did you feel that a situation like the one in "The Cold Equations" could actually happen? Explain your answer in three to five sentences including examples from the story. (10 points) What is located at 0 latitude? OA) prime meridian OB) North Pole C) equator OD) Arctic Circle Which statement best explains what Paine says about the king? *Diction is the literary term that meansThe connections we have with wordsO The definition of wordsAn author's choice of wordsO The common way of speaking with friends Emily ended up using 7/3 cups of flour in a recipe for cookies express the amount of flour that she used as a decimal how many foods need to be cooked at temperatures above 150 degrees to be safe? Steno's 2nd law or principle of horizontality states that sedimentary rocks are deposited in approximately horizontal layers. If you find them in some other position, you know they have been rearranged by the action of forces within the Earth. A. True B. False What is Larry Lehna's point in telling this story? Where does he make that point clear? How were villages affected by the agricultural revolution?O Settlers could stay in one place, allowing the village to grow.O Settlers lacked building materials because they needed to hunt.O Settlers had to plan their hunting schedules and lacked a food supply.O Settlers worried about invasions of their village by remaining in one place. Which of the following describes a property of air?A. Rough texture B. Attracted to magnets C. Orange in color D.Gas at room temperature 1. The half-life of cobalt-60 is 5 years. If you have 10 grams of Co-60, how much do youhave after 15 years?IA: 1.25 gB:58C: 10 gD: 20 g Solve for X:-7x -1 = -9x -17 A "limiting factor" is something that limits the number of organisms that a certain ecosystemcan support. Why is this process so important to understanding the number of plants that can besupported by an ecosystem? How does the body develop immunity to certain diseases ? Explain why hypothesis is not an educated guess ? If s = 2 feet, then what is the surface area of the cube shown above? A. 24 square feet B. 12 square feet C. 16 square feet D. 48 square feet What value of p makes the equation true? 6. The complement of an angle is 5 less than four times the angle. Find the measure of the angle. which country does not have veto power in the united nations Create a list of three questions that are good science questions.