URGENT!! Two students determined the value of this expression. -2.5(1.4+3.1) + 6.9(-4.3)
These are the steps each student used.

Student P Steps:
Step 1: -3.5 + 7.75 + 6.9(-4.3)

Step 2: -3.5 + 7.75 - 29.67

Step 3: 7.75 - 3.5 - 29.67

Step 4: -25.42

Students Q steps:
Step 1: -3.5 - 7.75 + 6.9(-4.3)

Step 2: -3.5 - 7.75 - 29.67

Step 3: -(3.5 - 7.75 - 29.67)

Step 4: -(-33.92)

Step 5: 33.92
Analyze the steps and describe any errors made by Student P and Student Q

Answers

Answer 1

Answer:

student  p= added and subtracted wrongs

stident Q= only subtracted

Step-by-step explanation:

Answer 2

The error of student P is the first step and that of student Q is the third step.

What are Expressions?

Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.

Given expression is

-2.5 (1.4 + 3.1) + 6.9 (-4.3)

Using the distributive property,

= (-2.5 × 1.4) + (-2.5 × 3.1) + (6.6 × -4.3)

= -3.5 - 7.75 - 29.67

= - (3.5 + 7.75 + 29.67)

= -40.92

This is the correct way to do the operations.

The error of student P is in the step 1, where the student wrote 7.75 instead of -7.75.

The error of student Q is in the step 3, that when the negative sign is taken out all the signs inside the bracket become positive.

Hence the errors of two students are found.

Learn more about Expressions here :

https://brainly.com/question/28365581

#SPJ3


Related Questions

THIS IS URGENT PLZ HELP!!!

Find three consecutive EVEN numbers such that: The sum of one sixth of the first number, two sevenths of the second number and one half of the third number equals 54

Answers

Answer:

12

Step-by-step explanation:

2

4

6

8

10

12

14

16

18

20

22

24

26

I will give brain list

Answers

Answer:

Step-by-step explanation:

Can somebody help me out my grade are bad

Answers

Answer:

I would make a triangle

Step-by-step explanation:

Answer:

Step-by-step explanation:

Fabric is on sale for these prices: orange, $3 per yard; blue, $4 per yard; yellow, $2.50 per yard; and white $1.50 per yard. Irma needs to buy 3 different colors of fabric with a total length of 2 yards. She has a budget of $6. What fabrics could she buy?

Answers

Answer:

Yellow White And Orange I pretty Sure!! Im sorry if this is not what you want! I can change it if so.

Step-by-step explanation:

A wheel with a 1 foot radius spins in place in a counterclockwise direction. Explain why the distance point P travels is the same as the angle of revolution (measured in radians) of this wheel?

Answers

Answer:

See below.

Step-by-step explanation:

The definition of radian is:

A radian is a unit of angle measurement such that a central angle of a circle measuring 1 radian subtends and arc of the circle whose length equals the radius if the circle.

In this case, the radius is 1 foot. Point P travels along the arc formed by an angle. When the angle is 1 radian, the arc length equals the radius of the circle, 1 foot. It is simply following the definition of radian.

Point P will travel a distance in a complete revolution i.e. the distance point P travels is the same as the angle of revolution.

What is 1 radian?

One radian is defined as the angle subtended from the centre of a circle which intercepts an arc equal in length to the radius of the circle.

Circumference of the circle = 2π(1) =2π feet.

This means point P will travel a distance in a complete revolution.

A complete revolution = 360° or 2π

Hence, point P will travel a distance in a complete revolution i.e. the distance point P travels is the same as the angle of revolution.

To get more about circles visit:

https://brainly.com/question/24375372

The quadrilateral shown is a rectangle. What is measure zvw

Answers

Answer:

measure of zvm is 119°

Step-by-step explanation:

xvw+zvw=180°{straight angle}zvm=180-61=119°

stay safe healthy and happy.

what the answer for this equation 2+(3-2x2)x1

Answers

Answer:

I got 1 (but i was using math.way so im so sorry if its wrong)

Step-by-step explanation:

also i love your pf.p

Answer:

2+(3-2*2)*1

2+(3-4)*1

2+(-1)*1

2-1

1 answer

66 oz = __lb in a mixed number

Answers

Answer:

[tex]4\frac{1}{8}[/tex] pounds

Step-by-step explanation:

1 pound = 16 ounces

[tex]\frac{66}{16} =\frac{y}{1}[/tex]

16 × y = 66 × 1

16y = 66

16y ÷ 16 = 66 ÷ 16

[tex]y=4\frac{1}{8}[/tex]

Answer: 4 1/8

Step-by-step explanation:

16 oz in 1 lb

64 -> 4 lb

2/16 = 1/8

4 1/8 lb

20/100 + 4/10 =20/100 + x = x move a fraction to make the equation true

Answers

Answer:

remove 4/10

20/100=20/100= 1 which is x

Step-by-step explanation:

Mrk ME BRAINLIEST PLZZZZZZZZZZ

hello pls help me. khan academy sucks

Answers

Answer:

straight angle

i think straight angle is right answer

The Old-Fashioned but Newfangled Candy Company wants to mix some of its $5.50 per pound Tropical Taffy, with 100 pounds of its $6.25 per pound Passion Fruit Taffy to create a $6 per pound taffy called Tropical Passion. How many pounds of the $5.50 per pound Tropical Taffy should the company use?​

Answers

Answer:

50

Step-by-step explanation:

x= the number of pounds of the tropical taffy that should be used

You need to take the value of the Tropical Taffy + the value of the Passion Fruit taffy to = the value of Tropical Passion

value- price per pound times the number of pounds

Your equation is going to look like this-->

5.50x+6.25(100)=6(x+100)

5.50x+625=6x+600

-5.50x        -5.50x

625=0.5x+600

-600         -600

25=0.5x

50=x

Hope this helps!

In a right triangle, angle φ has a tangent value of 1.40. The side adjacent to angle φ has a length of 9.0 inches. What is the length of the side opposite angle φ?
a. 6.4 inches
b. 12.6 inches
c. 9.1 inches
d. 54.4 inches

Answers

Answer:

b) 12.6 inches

Step-by-step explanation:

tangent is the ratio of the side opposite over adjacent, so if we let x= length of the opposite side, 1.40=x/9, x=12.6 inches

b) 12.6 inches

Hope it helps!!

Can someone help me plzz!! no links tho​

Answers

Answer:

A

Step-by-step explanation:

Can you help me please

Answers

Answer:

∠1 = 48

∠2 = 132

∠4 - 132

Step-by-step explanation:

∠3 and ∠1 are vertical angles

vertical angles are congruent ( equal to each other )

So if ∠3 = 48° then ∠1 also = 48°

∠3 and ∠4 are supplementary angles

supplementary angles add up to equal 180°

Hence, ∠3 + ∠4 = 180

48 + ∠4 = 180

180 - 48 = 132

Hence, ∠4 = 132

∠4 and ∠2 are vertical angles

Like stated previously vertical angles are congruent

Hence, ∠2 = 132

Pls what’s the answer

Answers

Answer:

D is correct option.

Step-by-step explanation:

g(x) =-3 root x-1.

4) Write the equation for the line of best fit shown in the graph below. Show all your work.
(3 points)

Answers

Answer:

3y = 2x+6

Drawing:

A rectangular swimming pool has a base with measurements of 25 meters and 17 meters. The height of the pool is 2 meters, what is the volume of the pool

Answers

Answer:

850m³

Step-by-step explanation:

Volume is length X width X height.

So, 25 x 17 x 2 = 850 meters cubed


Last year, a population of rabbits had 20 births, 10 deaths, 15 individuals immigrate, and 15 individuals emmigrate.
What is the change in population size for the rabbits that year?

Answers

Answer:

+10

Step-by-step explanation:

35 - 25 = 10. I got 35 because 20 + 15 from the bunnies immigrating and 25 from the deaths and bunnies emmigrating out of the population.

Here!! no links please

Answers

Answer:

area = 66.28 km²

Step-by-step explanation:

area = (8 x 2) + (11 x 4) + (3.14)(2²)(0.5) = 16 + 44 + 6.28 = 66.28 km²

Answer:

Solution given:

area of semi circle=½×π×r²=½π×2²=6.28km²

area of rectangle ABCD=L×b=3×4=12km²

area of rectangle EFGC=L×b=8×6=48km²

total area =6.28+12+48=66.28 square kilometers.

This is easy I just need the answer thanks!!! :)

Answers

Answer:

225 inches

Step-by-step explanation:

15 x 15 = 225

NEED HELP ASAP PLEASE PRETTY SIMPLE TYSM

Answers

Answer:

[tex]2x + 3y = 6 ---(1)\\y = \frac{x}{6} - 3 ----(2)\\\\substitute \ y \ in \ (1)\\2x + 3(\frac{x}{6} - 3) = 6\\\\2x + \frac{x}{2} - 9 = 6\\\\\frac{5x}{2} = 6+9\\\\\frac{5x}{2} = 15\\5x = 30 \\x = 6\\substitute \ x \ in \ (2)\\\\y = \frac{6}{6} -3 = 1 - 3= -2[/tex]

x = 6, y = -2

Which line segment is a radius of K?

Answers

Answer:

KD

JK

Step-by-step explanation:

Hope it helps you in your learning process

Marcus is choosing 4 books to read from a list of 15 books. If order matters, how many ways can he choose to read the books?


4

32,760

23,760

60

Answers

Answer:

32,760

Step-by-step explanation:

Given :

Since the order matters, we use the permutation relation :

Recall :

nPr = n! ÷ (n - r)!

n = 15 ; r = 4

15P4 = 15! ÷ (15 - 4)!

15P4 = 15! ÷ 11!

15P4 = (15 * 14 * 13 * 12)

15P4 = 32,760

if 2/3x - 1 = 4 then x = ?

Answers

Answer: 2/15

Step-by-step explanation:

2/3x-1(3x/3x)=4

2/3x-3x/3x=4

2-3x=12x

2=15x

x=2/15

Help please!! ASAP!!

Thanks!!

Answers

Answer:

402

Step-by-step explanation:

The standard formula for the nth term of an arithmetic sequence is:

t + (n - 1)d

where t is the first term and d is the common difference. We can substitute to create a system of equations to solve for the first term and common difference:

22 = t + (5 - 1)d

62 = t + (15 - 1)d

22 = t + 4d

62 = t + 14d

We can use elimination to cancel out t:

62 = t + 14d

-( 22 = t + 4d )

40 = 10d

d = 4

Now, we can substitute the common difference to find the first term:

22 = t + 4*4

22 = t + 16

t = 6

Lastly, we can substitute values in the first equation to find the 100th term:

a100 = t + (n - 1)d

a100 = 6 + (100 - 1)(4)

a100 = 6 + (99)(4)

a100 = 6 + 396

a100 = 402

the answer is 402 since the equation is a5

Please help me find the range!

Answers

The range would be 0

Examine the expression. 17x - 34 Which is an equivalent expression? O 17*(1 + ) O 17x (1-2) O 17+(1-1) O 17*(1 + 2)​

Answers

Answer:

17(x-2)

Step-by-step explanation:

Given the expression

17x - 34

We are to factorize it

Get their factors

17x = 17 * x

34 = 17 * 2

Since 17 is common to both factors, hence 17 is the GCF

17x - 34 = 17(x - 2)

Hence the equivalent expression is 17(x-2)

Please explain how - calc ab - see attached photo

Answers

Answer:

D

Step-by-step explanation:

Set up to different integrals that match the endpoints

so in our case it would look like

[tex]\int\limits^0_{-2} {x} \, dx +\int\limits^1_0 {x+1} \, dx[/tex]

now it's just a matter of computing it

[tex]\int\limits^0_{-2} {x} \, dx =x^2\\0^2-(-2)^2=4\\\int\limits^1_0 {x+1} \, dx =\frac{x^2}{2}+x\\\frac{1}{2}+1-0=\frac{3}{2}\\\frac{3}{2}+4=\frac{11}{2}[/tex]

Samuel wants to buy cookies for his friend. The diameter of a cookie is 20 inches. What is the cookies area? Round to the nearest hundredth

Answers

Answer:

314.16

Step-by-step explanation:

Area=πr2

d=2r

Solving for Area

A=1

4πd2=1

4·π·202≈314.15927


Select all the right triangles, given the lengths of the sides.

Answers

Answer:

A and E are right triangles

Triangles A and triangle E are the right-angle triangle, but triangles B, C, and D are not right-angle triangles.

What is the right triangle?

A right-angle triangle is a triangle that has a side opposite to the right angle the largest side and is referred to as the hypotenuse. The angle of a right angle is always 90 degrees.

The slanted side of that triangle is called Hypotenuse and it is the longest side in that triangle.

Applying in Pythagoras theorem in the triangle A:

(√5)² = (√2)²+ (√3)²

5 = 5

Triangle A is the right-angle triangle.

For triangle B:

(√5)² = (√4)²+ (√3)²

5 ≠ 7

Triangle B is not the right-angle triangle

For triangle C:

16 + 25 ≠ 36

triangle C is not a right-angle triangle

For  triangle D:

25 + 25 ≠ 49

triangle D is not a right-angle triangle

For triangle E:

100 = 36 + 64

It is a right-angle triangle.

Thus, triangles A and triangle E is the right angle triangle.

Learn more about a right angle;

https://brainly.com/question/7116550

#SPJ2

Other Questions
Why do you think fixed boundaries ""flip"" waves and loose boundaries do not? Shannon rolls two number cubes, each numbered one through six. She observes the numbers facing up on each number cube and finds the total of the two numbers. What is the probability the total will be 5? NEED HELP WILL BRAINLIST AND 10 points When each side of a rectangular prism is doubled, how does the volume of the new rectangular prism compare to the original prism?A. The volume will be 4 times the original volume.B. The volume will be 8 times the original volume.C. The volume will be double the original volume.D. The volume will be one-half the original volume. Which event led to a major increase in United States territory?A) Louisiana Purchase TreatyB) Tripoli Peace TreatyC) reduction of the national debtD) slave ban A Farmer plants the same amount everyday, adding up to 1 3/4 acres at the end of the year. If the year is 1/2 over how many acres has the farmer planted? Engineers at Edison Laboratories developed a _____ strip that allowed them to capture sequences of images on film.kinetoscopeseleniumcottoncelluloid Who aided the US in the South Pacific Fighting? No links need help ASAP how the law protect and support victims of xenophobia What are some items that should be included in a shot list?A. script, photographer name and pricing strategyB. shutter speed, aperture, flash or no flashC. Image title, model name, date, time, temperatureDscene number, shot number, location, props needed Quickwrite 1: Some people assert that just one or two generations ago men and womenseemed to have more rigid codes for how to behave: for example, men could be loud andassertive while women were expected to dress modestly and use a "feminine" voice. Do youthink these codes or "rules" for male and female behavior still hold true today? What codes or"rules" apply to those who do not identify with one gender or the other? What experiences andobservations can you point to as support for your position? 100 pts and brainiest for the right answerA skateboard halfpipe is being designed for a competition. The halfpipe will be in the shape of a parabola and will be positioned above the ground such that its focus is 20 ft above the ground. Using the ground as the x-axis, where should the base of the halfpipe be positioned? Which equation best describes the equation of the halfpipe? (0, 20); y equals one over eighty times x squared plus 20 (0, 20); y equals one over eighty times x squared minus 20 (0, 10); y equals one over forty times x squared plus 10 (0, 10); y equals one over forty times x squared minus 10 How many outcomes are possible if you chose one letter from the word FUN and another letter from the word NOT. Calculate the ionization constant for the following acids or bases from the ionization constant of its conjugate base or conjugate acid: Keep your answer to 2 significant figures (CH3)3NH+ Young's double slit experiment is one of the quintessential experiments in physics. The availability of low cost lasers in recent years allows us to perform the double slit experiment rather easily in class. Your professor shines a green laser (568 nm) on a double slit with a separation of 0.112 mm. The diffraction pattern shines on the classroom wall 3.5 m away. Calculate the fringe separation between the second order and central fringe. Although the Fed has very strong influence over the money supply, it does not have complete control a.Because the Fed has no idea how much reserves will change when it buys or sells securities. b.Because of unpredictable changes in the public's desire to hold cash or borrow and banks' desires to hold reserves or lend. c.Because of unpredictable changes in reserve requirements. d.Because the FOMC meets only twice a year. Which idea the paragraph is an error in logic Right TrianglesSolve the right triangle shown in the figureC = 90, BC = 7.50mi, AC = 11.43mia. AB = 19.5mi, A = 31.2, B = 58.8b. AB = 16.mi, A = 35.2, B = 54.8c. AB = 13.7mi, A = 33.3, B = 56.7d. No triangle satisfies the given conditions.Please select the best answer from the choices provided Find the area please :)