Harriet works at the Mint, where new coins are made. Old and fake coins are also destroyed there. Harriet has 10 bags of $1 coins. All 10 bags contain the same number of coins. Harriet knows that nine bags contain only good coins and that one bag contains only fake coins. The fake coins are all about 0.5 gram short. Harriet has forgotten which bag contains the fake coins.
Harriet has a set of scales for weighing like the ones in the illustration. What is the lowest number of times she can weigh bags on the scales in order to find the bag of fake coins?

Answers

Answer 1

Answer:

3 times

Step-by-step explanation:

She would have to weigh the fake coins and another bag of real coins to spot a difference, and then she would need to check another bag to see which was correct. Maybe thats right.


Related Questions

please help!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

d

Step-by-step explanation: it is that answer because (r+s)t=rt+st is you r answer i did it and i got it correct please mark me as brainlist

No Cap I can't see the picture at all ! i'm so sorryI'll edit this if you tell me what this says!God Bless!Stay In school!

Which one is Correct...? 2+2=4, 2+2=10 or 2+2=22?

Answers

Answer:

2+2=4

Step-by-step explanation:

Answer:

2+2=4

Step-by-step explanation:

The need to feed and care for young children in pre-historic society led to
A. men and women doing different tasks.
B. a mostly vegetarian diet.
C. the development of agriculture.
D. the invention of stone tools.

Answers

Answer:

B

Step-by-step explanation:

a mostly vegetarian diet

5 stars plz

Taylor has $27 dollars in his checking account. He then writes a check for $35. What is the balance of Taylor's bank account? (Write an equation to represent this problem)Required to answer. Single line text.

Answers

Answer: $-8

Step-by-step explanation:

$27 - $35 = $-8

$3,000 is invested in an account paying 4% interest and twice that amount is invested at 6%.

Which of the following expressions represents the amount of interest earned on the money invested at 6%?

a. 2(3,000)
b. 0.06(6,000)
c. 0.06(3,000)

Answers

Answer:

B

Step-by-step explanation:

The triangle below has been reduced by a scale of 0.4. A large triangle has a base of 30 centimeters and height of 10 centimeters. A smaller triangle does not have dimensions provided. What is the area of the reduced triangle? 24 centimeters squared 60 centimeters squared 75 centimeters squared 375 centimeters squared

Answers

Answer:

24 centimeters squared(cm²)

Step-by-step explanation:

The triangle below has been reduced by a scale of 0.4.

A large triangle has a base of 30 centimeters and height of 10 centimeters.

Hence, reducing the large triangle by the given scale ratio, we have :

Height = 10cm × 0.4 = 4cm

Base = 30cm × 0.4 = 12 cm

Hence, the area of the smaller triangle

= Area = 1/2 × Base × Height

Height = 4 cm

Base = 12 cm

Area = 1/2 × 4 × 12

= 24 cm²

Answer:

A

Step-by-step explanation:

BIG BRAIN

pratctice and Solving Solve each equation with variables on both sides 1. 6x - 2 = x + 13​

Answers

Answer:

x=3

Step-by-step explanation:

6x - 2 = x + 13

subtract 1x from both sides

5x - 2 = 13

isolate the 5x by adding 2 to both sides

5x = 15

finnaly devide both by 5

x = 3

Answer:

      -7

Step-by-step explanation:

     1.6x-2=x+13

   +1.6x      +1.6x

          -2=2.6x+13

          -13        -13

          -15=2.6x

(2.6 divided by 2.6)

(-15 divided by 2.6 is -7)

answer:-7

Sorryyyyy its hard to explain

             

         

Simplify: 7^-8 x 7^-4
someone please help me?

Answers

Answer:

7.22476158 x 10^-11

Step-by-step explanation:

Answer with step-by-step explanation:

7^(-8) x 7^(-4) = 7.2247615811111111111

1.7346652551111111 x 0.0004164931 = 7.2247615811111111111

So the answer is A) 1/7^12

Hope this helped! (brainliest please)

will give brainliest ! need help due in an hour

Answers

If I’m not mistaken your years are going to be the x value and the cases are your y values so type the year as the x value and type the number of cases as the y value Let me know if I was right

The sum of three numbers is 79. The sum of five times the first number and two times the
second number increased by the third number is 859. Two time the first number, increased by
three times the second number plus nine times the third number is 498. Write a system.

Answers

Answer:

(x+y+z)=79

5x+2y+z=859

2x+3y+9z=498

Step-by-step explanation:

Its writing 3 different equations that have the same value for the same variable.

please help me on part a and after part a I will send you part b​

Answers

to be honest i’m probably the worst at math lol good luck

Two eighth grade classes are selling tickets to raise money for their school fundraiser.

• One class is selling tickets for $3.50 each and has already raised $250.
• The other class is selling tickets for $2.25 each and has already raised $300.

How many tickets does each class have to sell so that the total amount raised is the same for both classes?

Answers

Answer:

the answer is 40

Step-by-step explanation:

Answer:

40

Step-by-step explanation:


Write the equation of the line fully simplified slope-intercept form.

Answers

Answer:

y=-x+3

Step-by-step explanation:

The lunch lady has 3 pounds of lasagna. If she makes 16-pound servings using this amount of lasagna, how many servings can she make?

Answers

Answer:

3

Step-by-step explanation:

Answer:

5 1/3 servings

Step-by-step explanation:

16/3 = 5.33 = 5 1/3 servings

7th grade math , I’ll give brainliest

Answers

Answer:

7.$340

8. -88

Step-by-step explanation:

Please answer this question

Answers

The answer is 3 x 10^-6
40’2 not sure i thin

Alonzo earns 8% commission on vacuum cleaner sales. This past month, Alonzo sold 70 units at $150.00 each. How much did Alonzo make in commissions for the past month? Explain how you found your answer.

Answers

Answer:

Made $840 in commissions for the past month.

Step-by-step explanation:

sales = 70 * 150 = 10500

commission = .08 * 10500 = 840

Answer:

$840

Step-by-step explanation:

8% = 0.08

.08 * 150 = 12 per unit sold

12 * 70 = 840.00

A round plate has a radius of 8.25 inches. What is the circumference of the plate?

Answers

Answer: The circumference of the plate = 51.86 inches.

Step-by-step explanation:

Given : The radius of a round plate = 8.25 inches

Formula: circumference of a circle = [tex]2\pi r[/tex] , where r = radius of circle .

Then, the circumference of the plate [tex]=2\times\dfrac{22}{7}\times8.25[/tex]   [ [tex]\pi=\dfrac{22}{7}[/tex] ]

[tex]=51.857142857\approx51.86\ \text{inches}[/tex]

Hence, the circumference of the plate = 51.86 inches.

What is 4÷97 answered as a decimal?

Answers

Answer:

0.0412371134

Step-by-step explanation:

Answer:

24.25 hope that helps

Step-by-step explanation:

kyle has 108/4 if he cuts it into 3/4 of an inch how many pieces will he have

Answers

Answer:

36

Step-by-step explanation:

Divide 108 by 3 to get your answer, since the denomintors are the same.

103/3 = 36

PLEAS HELP IM ON A WUIZ
What is -6? It is...
Rational Number
Integer
Whole Number
Natural Number

Answers

Answer: Integer, rational number

A clothes hanger is in the shape on an isosceles triangle. If the hanger is 70° wide what are the base angles?

Answers

Answer:

55°

Step-by-step explanation:

Given parameters:

      Angles in the triangle;

                   70°, X° and X°

The triangle is an isosceles triangle;

  In all triangles, the sum of the interior angles is 180°

  So;

            70° + X° + X° = 180°

            70° + 2X° = 180°

                      2X°  = 180° - 70°

                      2X° = 110°

                        X°  = [tex]\frac{110}{2}[/tex]  = 55°

Hooke’s law states that the distance that a spring is stretched by hanging object varies directly as the mass of the object. If the distance is 20 cm when the mass is 3 kg, what is the distance when the mass is 5 kg?

Answers

Answer:

33.3333333

Have a nice day!      :)

Help ASAP. George receives a 3-year loan for $2000. At the end of the loan he has paid $30 in
interest. What was his simple interest rate?
A.50%
B. 0.5% C.5%
D. 0.05%

Answers

B

Step-by-step explanation:

2000$ is far from 30$ so it is b

An eight ft board is cut into two pieces. One piece is 2 ft longer thant he other. How long are the pieces?

Answers

Answer: 6 ft and 2 ft

Step-by-step explanation:

Answer:

6ft and 2ft

Step-by-step explanation:

8ft board ÷ 2 pieces = 4ft each

4ft and 4ft boards. But one of them is longer by 2ft so:

4ft - 2ft = 2ft

4ft + 2 ft = 6ft

So, one piece is 2ft and the other piece is 6ft

enter the exponential expression as a decimal 10^3​

Answers

0.001

Step- by-step explanation









Answer:

1000

Step-by-step explanation:

10^3 = 10 * 10 * 10 = 1000

WILL GIVE BRAINIEST!!!!!!
Write the slope intercept form of the equation of the
given points

Answers

Answer:

C

hope this helps!

if u do y2-y1 over x2-x1 you should get a

⎧ ​ y=2x+3 y=−3x+3 ​

Answers

what exactly do u want us to do?

1-Describe the error in the way the calculation of the slope of the two points is set up and/or solved. Please be specific. Do not just state what the slope should be. Describe the error.
2- Use the same two points from the error analysis question above and show how to calculate the slope correctly. Then, use the correct slope and one of the points to write the equation in point-slope form of the line. Show all work!

Answers

Answer:

Please check explanations for answer

Step-by-step explanation:

Let’s have two points (5,10) and (15,20)

1. Let’s find the slope of these two points

Mathematically, the slope can be calculated using the formula;

m = (y2-y1)/(x1-x2)

So m = (20-10)/(5-15) = 10/-10 = -1

The error here is the formula used in calculating the slope

The formula should be;

m = (y2-y1)/(x2-x1) and not x1-x2

2. To calculate the slope correctly, we have;

m = (y2-y1)/(x2-x1)

So the slope will be;

m = (20-10)/(15-5) = 10/10 = 1

In the point slope form, the equation can be represented as;

y-y1 = m(x-x1)

Let’s use the point (5,10)

y- 10 = 1(x-5)

The above is the point slope form

using one of the points and the correct slope of the line

help pls im give you many ponits

Answers

Answer:

4

Step-by-step explanation:

-3.15*4=(-12.60)

hope this helps :3

Answer:

4 :D

Step-by-step explanation:

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