MATHEMATICS MIDDLE SCHOOL

Quarantine has gotten my family a little crazy! I have forgotten thecombination to a lock. They know what it is but they won't tell me!
They know how much I love puzzles so they made a puzzle for me to
figure out the combination. Can you please help???
X The combination is 3 digits.
X -6-8-2" is not the combination but one of the numbers is
correct and is in the correct place
X "6-4-5" is not the combination One of the numbers is correct
but in the wrong place
"2-0-6" is not the combination Two of the numbers are
correct but in the wrong places,
7-8-6" is not the combination and none of the numbers are
correct
WHAT IS THE COMBINATION TO THE LOCK?
Class comments

Answers

Answer 1
Answer: I think the combo is 4-0-2
Answer 2
Answer:

Answer:

052

Step-by-step explanation:

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A cell phone company charges a monthly fee plus $0.25 for each text message. The monthly fee is $30.00 and you owe $59.50. How many text messages did you have? Write an equation using x as the variable and then solve the equation.
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Fresh pond has a population of 854 and it’s increasing by 3 people per year. Strawberry has a population of 427 and it’s increasing by 10 people per year. In how many years will the two villages have the same number of residents?
Integer equation carl owed his mom $27

, draw and label examples of all rectangular prisms built with 16 unit cubes

Answers

Volume is the amount of space inside a 3-dimensional figure. It is measured in cubic units. A cubic centimeter is a cube that is 1 cm wide, 1 cm long, and 1 cm high. Another way to think of volume is to find the number of unit cubes necessary for building the figure. There is a video about it's called volume of rectangle prism.

Is 102 divisible by 4 5 6 9 or 10 PLEASE HELP I AM FAILING AND ABOUT TO CRY!!!!

Answers

It can't be divided by 5 or 10 since when you count by 10's the numbers end in only zeros and when you count by 5 it is either 5 or 0  (5, 10, 15, 20 and so on).

9 will only work if the digits in the answer add up to 9.  18: 1+8=9
99: 9+9=18 and 1+8=9  So it can't be divided by 9  102: 1+0+2=3 (not 9)

That leaves 6 and six works - here's why.
There is a rule for 3's that says that the sum of the digit must add up to 3, 6 or 9.
Look:
3x1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12 and 1+2=3
3 x 5 = 15 and 1+ 5 = 6
3 x 6 = 18 and 1+ 8 = 9  
3 x 7 = 21  and 2 +1 = 3  and so on -  do you see the 3,6,9 pattern repeating.

Six follows the same rule except the number must be even.  Look above to see that 6 works with 6, 12 and 18 but not the others.  
So 102 is divisible by 3  (1+0+2 = 3)  AND it is an even number - therefore it is divisible by 6.  Here's proof: 6 x 15 = 90 and 102 is 12 more than 90 and six goes into that 12)

I hope that this will help you feel better. I don't want you to cry. :-)

Samantha has $45 to spend on a new dress.Select all of the following options that Samantha can afford.


A $45 green dress with 10% tax.


A $40 red dress with 5% tax added to the total.


A black dress that is 20% off of the original price of $50.


A $36 blue dress bought online that requires an additional 15% shipping fee.

Answers

45 + ( 10 / 100 ) * 45 = 49.5 > 45 No
40 + ( 5 / 100 ) * 40 = 42 < 45 Yes
50 - ( 20 / 100 ) * 50 = 40 < 45 Yes
36 + ( 15 / 100 ) * 36 = 41.4 < 45 Yes

in the pet store, 1/6 of the puppies are black and 1/4 are white. what fraction of the puppies are black or white?​

Answers

Answer:

5/12

1/6+1/4=5/12

Mario walked at a rate of 2/3 mile every 10 minutes. What was his rate in person hour? A.)4 B)6 2/3 C)9 D)15

Answers

1~\text{h}=60~\mathrm{min}~~\Leftrightarrow~~\boxed{\begin{array}{c} 1\mathrm{~min}=(1)/(60)\mathrm{~h} \end{array}}

Therefore,

(2)/(3)~\frac{\mathrm{mile}}{10\mathrm{~min}}\n \n \n =(2)/(3)~\frac{\mathrm{mile}}{10\cdot ((1)/(60)~\mathrm{min})}\n \n \n =(2)/(3)~\frac{\mathrm{mile}}{(10)/(60)~\mathrm{min}}\n \n \n =(2)/(3)~\frac{\mathrm{mile}}{(1)/(6)~\mathrm{min}}\n \n \n =(2)/(3\cdot (1)/(6))~\frac{\mathrm{mile}}{\mathrm{min}}\n \n \n =(2)/(((3)/(6)))~\frac{\mathrm{mile}}{\mathrm{min}}\n \n \n =2\cdot (6)/(3)~\frac{\mathrm{mile}}{\mathrm{min}}\n \n \n =2\cdot 2~\frac{\mathrm{mile}}{\mathrm{min}}\n \n \n =4~\frac{\mathrm{miles}}{\mathrm{min}}

Jatonia sold n cups of lemonade at her stand for 0.75 each. She made a total of 18.00. Write an equation to express how many cups of lemonade she sold.

Answers

You can convert the description to symbolic representation.

The equation that can express how many cups of lemonade Jatonia sold is 0.75 * n = 18 which results in n = 24

How to make equations for expressing the given conditions?

Whatever the condition is given, try converting it into symbolicforms.

For example, if it is said that something is increased, then you do addition by putting + sign.

You can use such techniques to convert given descriptions to equations or mathematical expressions mostly.

How to form the equation for given condition?

Since one cup is sold for 0.75 price, thus n cups will be sold in n times 0.75 price (since 0.75 + 0.75 ... n times is same as 0.75 times n)

This fact can thus, be written as 0.75 * n

The cost for n cups is 18, thus the cost we get is equal to 18.

Thus, we have: 0.75 * n = 18

Since we need the expression for getting amount of cups(denoted by n), we will try to make n left alone in the left side.

Thus ,we will divide by 0.75 on both the sides.

Thus we get:

0.75 * n = 18\n\n(0.75 * n)/(0.75) = (18)/(0.75)\n\nn = 24

Thus, the equation that can express how many cups of lemonade Jatonia sold is  0.75 * n = 18 which results in n = 24

Learn more about equations here:

brainly.com/question/2687544
0.75n=18.00

You see, you would have to see how many cups she sold and by doing that you have to divide .75 by 18.00 to represent that you put n with the .75 and that causes you to need to get n alone so you divide .75 from 18 and get your answer
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