A teacher divides her class into groups and assigns each group the task of measuring the mass of the same object three times. The teacher already knows that the mass of the object is 25 g. Based on the results each group records, which group makes the most precise measurements of the object? A. Group D: 20.0 g, 25.0 g, 30.0 g B. Group A: 28.5 g, 28.4 g, 28.5 g C. Group C: 32.1 g, 35.0 g, 25.0 g O D. Group B: 25.5 g, 25.0 g, 24.8 g SUBMIT​

Answers

Answer 1

Answer:

I think it would be group B due to the fact that they are the closest to 25 g

Step-by-step explanation:

Answer 2

Answer:

B Group A 28.5 g, 28.4 g, 28.5 g

Step-by-step explanation:


Related Questions

A rectangle is 45 cm on one side and 6 cm on another side. What is the perimeter?​

Answers

Answer:

102 cm

Step-by-step explanation:

45 + 45 = 90

6 + 6 = 12

90 + 12 = 102

Arjun has to pack 15,276 pastries into boxes of 6 pastries each. He has to pack all the pastries.
a. Which arithmetic operation can be used to find the number of boxes?
b. If Arjun took 1400 boxes to pack all pastries, Is he correct? Justify your answer.

Answers

Answer:

No, Arjun would need 2546 boxes

Step-by-step explanation:

Since he needs to pack 15,276 pastries into boxes of 6, this equation can be used to determine the amount of boxes needed. Hope this helps!

6 47/75 as a percentage

Answers

Answer:

662.6%

Step-by-step explanation:

what ratios are equivalent to 10:12 plz help i need this done by today.

Answers

Answer:

5:6 is the only ratio that is possibly equivalent

Step-by-step explanation:

divide 10 by 2 then 12 by 2 to get 5:6

Which equation represents the graphed function?
A. y = -2x + 3
B. y = 2x + 3
C. y=1/2x+3
D. y=-1/2x+3

Answers

Answer:

y= - 2x+3

Step-by-step explanation:

3 is our start possition

the number before the x is the rise over run

so we would "rise" (vertical) 2 but since it has a - it will be going the oppisite direction then our run would be 1 going over horizenly 1 block

y= - 2x+3
Is the answer:3

My Instagram just got disabled how do I recover it today or by tomorrow?? Help pls

Answers

Answer:

I would call them and ask for the manager lowkey!

Step-by-step explanation:

❤❤

Answer:

Of course today

Step-by-step explanation:

Find the midpoint of the segment with the following endpoints.
(10, 1) and (3,-6)

Someone please help?

Answers

Answer: x midpoint 6.5 y midpoint -2.5

Step-by-step explanation:

Answer:

(6.5,-2.5)

Step-by-step explanation:

midpoint=( X1+X2/2 , Y1+Y2/2)

midpoint= (10+3/2 , 1+-6/2)

midpoint =(6.5,-2.5)

what is the median of this data set? [1,2,3,4,5,81]

Answers

Answer: 3.5

Step-by-step explanation: Find the two middle numbers, 3&4, then add, 3+4=7, then divide by 2, 7/2 = 3.5, and now you have your median! 3.5!!

Help Needed !Find The Measure Of The Indicated Angle

Answers

50

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

Add the two angles

80+50=130

The total degree of a triangle is 180 so subtract

180-130=50

(its also an isosceles triangle)

find the value of x
The answer is 40.
I need to show my work

Answers

Answer:

(2x+7)° + (5x+4)° + 69° = 360°

=> 2x + 7 + 5x + 4 + 69 = 360

=> 7x + 80 = 360

=> 7x = 360 – 80

=> x = 280/7

=> x = 40

Answer:

x=40

Step-by-step explanation:

(2x+7)*+(5x+4)*+69*=360*   (360* because its a circle)

7x+80=360       (combine like terms)

- 80     -80      (minus 80 both sides)

7x=280      (divide 7 both sides)

x=40

Find cosα given that sinα = 5/13 and α is in quadrant II

Answers

Answer:

cos α = - [tex]\frac{12}{13}[/tex]

Step-by-step explanation:

Since α is in second quadrant then cosα < 0

Using the identity

sin²α + cos²α = 1 then

cosα = - [tex]\sqrt{1-sin^2\alpha }[/tex]

         = - [tex]\sqrt{1-(\frac{5}{13})^2 }[/tex]

         = - [tex]\sqrt{1-\frac{25}{169} }[/tex]

         = - [tex]\sqrt{\frac{144}{169} }[/tex]

         = - [tex]\frac{12}{13}[/tex]

Miss Sally waited on a large party at the Chesterfield Restaurant. The party bill totaled $110.00. As the party was pleased with the service they received, the tipped Miss Sally 20%. What amount did Miss Sally receive as her tip? Explain your answer.

Answers

Miss Sally would receive $22 because for 20% you move the decimal place one to the left then multiply by 2

Compared to its parent function the transformation of the following : y= -3x - 3 + 4
a) reflected respect to x-axis, stretched vertically, moved 3 to the left and 4 up

b) stretched horizontally, moved 3 to the right and 4 up

c) reflected with respect to x-axis, stretched vertically, moved 3 to the right and 4 up

d) stretched horizontally, moved 3 to the left and 4 down

Answers

The answer is B
Hope it helps!!

help pleassseeeeee nowwwwww

Answers

328 multiplied by 10 so 3,280
if it is 10$ per ticket and there is a maximum of 328 people- they would make 3280$

What is the answer
2x +3(x-1)=7x+1-2(x+2

Answers

Answer:

0=0 true for all x

Step-by-step explanation:

[tex]2x+3\left(x-1\right)=7x+1-2\left(x+2\right)\\\\[/tex]

[tex]2x+3x-3=7x+1-2\left(x+2\right)[/tex]

[tex]5x-3=5x-3[/tex]

Hope this help ya

<3

Red

HELP BAD DAY
Write as an expression:twice the product of the squares of x and y
with the product of the cube of a and the square of b

Answers

Answer:

the square root of 2(x^3 * x^2)

Step-by-step explanation:

twice means 2 and product means either division or multiplication (multiplication in this scenario because twice means multiply).  cubed means to the third power

The girls at a student dance outnumbered the boys by 14. Altogether there
were 102 students at the dance. How many boys and how many girls were
present at the dance? Define two variables and then set up two equations. Solve
using either substitution or elimination.

Answers

Answer:

58 girls

44 boys

Step-by-step explanation:    

102 divided by 2= 51                              have to divide, 14 divided by 2 = 7

51 - 7= 44

51 + 7= 58

58 + 44= 102

according to my calculations hope i helped ^_^

and also 58 -44= 14 is the difference between them

Solve for r 5(r-10)=-51

Answers

Answer:

r=−1/5

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

5(r−10)=−51

(5)(r)+(5)(−10)=−51(Distribute)

5r+−50=−51

5r−50=−51

Step 2: Add 50 to both sides.

5r−50+50=−51+50

5r=−1Step 3: Divide both sides by 5.

5r/5=−1/5

r=−1/5

Answer:

r = - ¹/₅ or -0.2

Step-by-step explanation:

5(r - 10) = -51

5r - 50 = -51

5r = -51 + 50

5r = -1

r = - ¹/₅ or 0.2

When the function y=x is changed to y=|x|, how is the graph affected?
A. All points for x 0 are reflected over the line y=x.
B. All points for x 0 are reflected over the line y=x.
D. All points for x > 0 are reflected over the x-axis.

Answers

Answer:

First, the function:

y = x

Is:

Positive if x > 0

Negative if x < 0

Now, on another hand, the function y = IxI is:

Positive if x < 0

Positive if x > 0.

Then the only part that changes is the negative side of the domain, and the thing that changes is the sign (the change of sign is equivalent to a reflection over the x-axis or the line y = 0".

Then the correct option is:

"All points for x < 0 are reflected over the x-axis"

I suppose that this is option C, the missing one.

The line shown represents the amount of money Ben owes on his lunch account.
2 days ago, he owed $1. What is an equation of the line in point-slope form?

Answers

Answer:

y=2x-1

Step-by-step explanation:

Remeber to put no spaces on the test

and it is this answer bc he owes one dollar evryday and owing is negative

A summer camp has 720 ft of float line with which to rope off three adjacent rectangular areas of a lake for swimming​ lessons, one for each of three levels of swimming ability. A beach forms one side of the swimming areas. Suppose that the width of each area is x feet. Answer parts​ a) through ​c).

Answers

Step-by-step explanation:

Kindly find attached a detailed image to better understand the solution to this problem.

given that the total length of the line is 720ft

and also the line is divided into three sections

This means that the line will also be divided into three parts

720/3= 240feet so that a section will have two sides that are 240ft since the section forms a rectangular shape.

now for the other two sides

the total length of the rope is  = one length size of the rectangle+ 4 width size of the rectangle

one width size of the rope is x

then 4 width size is 4x

720=length of rectangle +4x

length of rectangle= 720-4x

area of a rectangle is =length *width

area of rectangle is =  (720-4x)*x

Hence the function A=  (720-4x)x can be used to solve for the area of the rectangle.

real numbers are the set of numbers that includes all rational and irrational numbers

Answers

Answer:

it is absolutely correct

What is the sum of 5/2 + 5/6 + 5/24?

Answers

It will either be 85/24 OR 3 13/24 theyre the same, but written differently.

Answer:

In Exact form the answer is [tex]\frac{85}{24}[/tex]

I hope this helps.

25-2z-10z=-3(4z+8)-1
solve and how many solutions ?

Answers

distribute first
25-2z-10z=-12z-24-1
combine like terms
25-12z=-12z-25
add 12z to both sides
25=-25
no solution because the right side has a negative

Answer:

No Solutions

Step-by-step explanation:

Step 1:

25 - 2z - 10z = - 3 ( 4z + 8 ) - 1       Equation/Given

Step 2:

25 - 12z = - 12z - 25        Combine Like Terms/Multiply

Step 3:

25 = - 25       Add 12z on both sides

Answer:

No Solutions

Hope This Helps :)

A football team gains 7 yards in the first down then gains 2 yards in the second down. Then loses 4 yards in the third yard. What is the net yardage?

Answers

Answer: 5

Step-by-step explanation:

First we should do the first step: 7+2=9, The they lose 4 which then 9-4

which would equal 5

Answer:

7+2-4=?

7+2=9-4=5

Final Answer: 5 Yards

Are lines m1 and m2 parallel? Explain Yes, because line m1 has a slope of -\frac{5}{2}− 2 5 ​ and m2 has a slope of -2 No, because lines m1 and m2 have the same slope of -\frac{5}{2}− 2 5 ​ No, because line m1 has a slope of -\frac{5}{2}− 2 5 ​ and m2 has a slope of -2 Yes, because lines m1 and m2 have the same slope of -2 Item at position 2 2

Answers

Answer:

Yes, because lines m1 and m2 have the same slope of -2

Step-by-step explanation:

For given two lines L1 and L2 with slope m1 and m2 respectively, the condition for the two lines to be parallel is for the two equations to have the same slope. If m1 = m2, the meaning is that the line L1 and L2 are parallel to each other no matter the equation of the lines in question.

The general equation of a line is y = mx+c where;

m is the slope and c is the intercept.

Even though we are not given the equation of both lines, the base line is that for two lines to be parallel to each other, they must have the same slope.

The correct option is therefore "Yes, because lines m1 and m2 have the same slope of -2"

GIVING ALOT OF POINTS IF YOU GET IT CORRCET:)

Answers

Answer:

y=1/2x+4

Step-by-step explanation:

Because I took the quiz and got it right  ;)

Answer:

y=1/2x+4 i took the quiz too

tep-by-step explanation:

Alfred and his 4 friends bought 13 1/4
pounds of gummy bears at 1.20 a pound. What is the total cost of the gummy bear?

Answers

Answer:

$15.90

Step-by-step explanation:

$1.20 x .25 is the cost of 1/4 pound = $ 0.30

13 lbs × 1.20 = $15.60

15.6 + .3=15.9

please someone help ... ( i’ll mark brainiest , hehe :) )

Answers

a. 25+90=115, 180-115=65 (III) b. 65+90=155, 180-155=25 (I) c. 180-25=155 (V)

How far did they travel per hour

Answers

Answer:

37.5 miles per hour

Step-by-step explanation:

d= rt; d is distance (225 miles), r is rate, and t is time (6 hours)

225= 6r

225/6 = 6r/6

37.5= r

37.5 miles per hour

Hope this helps!

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