Mathematics Middle School

During a three–day period, the stock of Money, Inc. gained 6 points, lost 10 points, and gained 2 points. What was the total change in points for the three days?

A.
2 points

B.
4 points

C.
–6 points

D.
–2 points

Answers

Answer 1
I strongly believe the answer is D. -2 points
0+6=6
6-10=-4
-4+2=-2

Answer 2

Answer:

the answer is D

Step-by-step explanati

Related Questions

Simplify
(4y^2-13y+3)/2y^2-5y-12 multiplied by
(2y^2+9y+9)/16y^2-1) Multiplied by
(Y^2+3y-28)/y^2-9)

Answers

After factoring each polynomial and canceling the resulting binomials that appear in both the numerator and denominator, you are left with this fraction for your answer:

[tex] \frac{y+7}{4y+1} [/tex]


As a wedding treat, a couple plans to order 600 candles. The choice they have for the color of the candles are silver, gold, white, or teal. The couple asks 50 random guests what color they would prefer, and the results of the survey are given in this table.
Based on the results, which
Interim Checkpoint:
Grade 7 Checkpoint 4 - Part 1

Assessment items

As a wedding treat, a couple plans to order 600 candles. The choice they have for the color of the candles are silver, gold, white, or teal. The couple asks 50 random guests what color they would prefer, and the results of the survey are given in this table.
Based on the results, which color should the couple order?


white

silver

gold

teal
Color
Frequency
Silver
18
Gold
19
White
7
Teal
6
















color should the couple order?

Answers

Hello!

Since gold is what most people wanted the answer is gold

The answer is gold

Hope this helps!

Answer:

C. Gold

Step-by-step explanation:

We are given that,

The frequency table for the preference of different colors is given by,

Color                          Frequency

Silver                                 18

Gold                                  19

White                                 7

Teal                                   6

As we see that,

The table shows that out of 50 random people, most people preferred the color 'Gold' over any other color.

Hence, the couple should order 'Gold' colored candles.

What property is used to say that the expressions 5x + 7 - 2x is equivalent to the expression 5x - 2x + 7?

Commutative, distributive, associative or identity

Answers

i want to say it is the Commutative Laws
The commutative property says that 5x + 7 - 2x = 5x - 2x + 7.

The order does not matter and does not change the answer.

I can’t remember what distributive property is.

Answers

 The distributive property is a special way where multiplication is applied to addition of two or more numbers in which each term inside a set of parentheses can be multiplied by a factor outside the parentheses, such as:

a(b + c) = ab + ac.

Does this help in any way?


So technically, you multiply the number outside the parentheses (which is 8) by the numbers inside the parentheses. But you have to do whatever the math symbol is. If it's division, divide the number outside to the numbers inside. So in this case, it will be  

1) 8 times 3x which will equal to 24x
2) 8 times 5= 40
3) The last step is to put them together which will be 24x + 40. You can't add them together because one is a number and one is a number with a variable. 
4) Answer=24x+40  (hope this helps)

In circle O, BC=14 and DC=25. What is the length of diameter BA?
-58.6
-12.2
-44.6
-30.6

Answers

Here's the picture, if anyone still needs it.
Does anyone know the answer yet?

Use the figure to answer the following questions.
Please show work if possible

A. What is the intersection of plane P and plane R?


B. Name three points that are collinear

C. Name plane R in two more ways

D. Name four coplanar points

E. Name a points that lie on both plane P and plane R

Answers

Final answer:

The intersection of plane P and plane R is the line AB. Points A, B, and C are collinear. Plane R can be named as plane AB or plane BC. Points A, B, C, and D are coplanar. Point A lies on both plane P and plane R.

Explanation:

A. The intersection of plane P and plane R can be found by determining the common points that lie on both planes. In the given figure, we can see that the line AB lies on both planes P and R, so the intersection of plane P and plane R is the line AB.

B. Collinear points are the points that lie on the same straight line. In the given figure, the points A, B, and C are collinear as they all lie on the line AB.

C. Plane R can be named in two more ways as plane AB or plane BC, as it is the same plane defined by either line AB or line BC.

D. Coplanar points are the points that lie on the same plane. In the given figure, the points A, B, C, and D are coplanar as they all lie on plane R.

E. A point that lies on both plane P and plane R is the point A, as it lies on both the plane defined by line AB (plane R) and the plane perpendicular to line CD (plane P).

First Response gets brainliest!

Number 18 BTW!

Answers

120 * percentage = 72
percentage = 72/120
percentage = 0.6

The lamp is 60% of its original price. This means that the percentage discount is 40%. 

Find the slope of the line.

A.) -7/2
B.) -2/7
C.) 7/2
D.) 2/7

Answers

The answer is C.
Starting from the bottom point, you go up 7 and go to the right 2, which makes the slop 7/2
The answer is c Hope this helps!!!

The two cones are similar. Find the surface area of the larger cone. Round your answer to the nearest hundredth. A.810.28cm squared. B.847.80cm squared. C.868.30cm squared. D.886.25cm squared

Answers

The correct answer is letter C. 868.30 cm^2 (centimeter squared)

See attached figure for reference of the two cones.


Solution:

Find first the radius.

To find the radius we must multiply 13.8 to 4.6 and multiply it by 3.7

Thus,

(13.8 / 4.6) x 3.7 = 11.1

To find the surface area of the larger cone we use this formula:

((pi x rad x slide length) + (pi x rad^2))

Where:

rad or radius = 11.1
slide length = 13.8

((pi x 11.1 x 13.8) + (pi x 11.1^2)) = 868.30 cm^2




Answer: The answer is C.868.30cm

Paige rides her bike around town. She can ride one half of a mile in 1 30 ith of an hour. If she continues to ride at the same pace, how many miles could she travel in 1 hour?

Answers

I think y ou meant "one thirtieth of an hour."

What is her ratet:  

(1/2) mile       1*30 mile
-------------- = --------------- = 15 mph
  (1/30) hr       2*1 hr

She could travel (15 mph)(1 hr), or 15 miles, in 1 hour.
0,5miles-90min
x miles-60 min
0.5*60/90=0.33

answer:0.33 miles

Which expression is equivalent to the expression shown please help!!!

Answers

Answer:

[tex]5^{15}[/tex]

Step-by-step explanation:

[tex]\frac{(5^3)^9}{5^12}\\\\\frac{5^{3*9}}{5^12}\\  \\\frac{5^27}{5^12}\\   \\ 5^{27-12}\\ \\ 5^{15}[/tex]

Find the values for a and b that would make the following equation true. (ax^2)(-6x^b) = 12x^5

Answers

[tex]\left(ax^2\right)\left(-6x^b\right)=12x^5\\\\(-6a)x^{2+b}=12x^5\to -6a=12\ and\ 2+b=5\\\\-6a=12\ \ \ |:(-6)\\a=-2\\\\2+b=5\ \ \ |-2\\b=3[/tex]

[tex]Answer:\ a=-2;\ b=3[/tex]

whats 6.09 billion in scientific notation?

Answers

(6.9 x 10^9)

hope this helps!
the answer is 6.5 x 10^11

How many cars are sold in a typical week at the dealership?

Answers

Maybe around 10 this is a tricky question.


Different dealerships sell different amounts

In this question, we determine the total number of cars sold in a typical week at a dealership based on the given data.

Based on the given data:

Number of cars sold at the dealership in a typical week:

3 cars: 14

4 cars: 19

5 cars: 12

6 cars: 9

7 cars: 11

To find the total cars sold:

Add the number of cars sold in the respective categories: 14 + 19 + 12 + 9 + 11 = 65. Therefore, 65 cars are sold in a typical week at the dealership.

Merl is a canadian exchange student in china and he currently has 12000 yuan in his bank account. If the exchange rate changes from 1 canadian dollar= 6.78 chinese yuan what happens to the value in canadian dollars of the money in merla bank account

Answers

Merl has 12,000 yuan, which if you divide by 6.78, gets you 1769.9115, in money terms is $1,769.91. So he has 1,769.91 Canadian dollars.

Factor out the coefficient of the variable 5/6s+4/6

Answers

Okie, we find out the coefficient
5/6 s+ 4/6= 1/6 x 5s+ 1/6 x 4= 1/6(5s+4)

we have done this
Have a good day

Write the product using exponents.

(−6)⋅(−6)

Answers

Answer:

(−6)²

Step-by-step explanation:

(−6)⋅(−6)

This means the numbers are being multiplied.

A number is being multiplied by the same number. You can write an exponent for the number of times it's being multiplied by itself.

Example:

x = x¹

x·x = x²

x·x·x = x³

You are multiplying (−6) twice.

(−6)⋅(−6) = (−6)²

Final answer:

To write the product using exponents for (-6)⋅(-6), we can use the rule that states when multiplying two numbers with the same base, we add the exponents. The product of (-6)⋅(-6) is 36.

Explanation:

To write the product using exponents for (-6)⋅(-6), we can use the rule that states when multiplying two numbers with the same base, we add the exponents. In this case, the base is -6, so the exponents are both 1.

The product can be written as (-6)^1⋅(-6)^1. Adding the exponents gives us (-6)^(1+1) = (-6)^2 = 36.

Therefore, the product of (-6)⋅(-6) is 36.

A school is constructing new tennis courts. Each rectangular court will be enclosed by a 600 ft fence. The length of the rectangular region will be 60 feet longer than the width. What are the dimensions of the new courts? Use an equation or a system of equations to explain how you determined your answer.

Answers

The dimensions are 120 ft by 180 ft.

Let L be the length.  We know that L is 60 feet more than the width, or w+60=L.

We know that the perimeter is given by 2w+2L; in this case, we have 2w+2(w+60) = 600

Using the distributive property, we have
2w+2*w+2*60 = 600
2w+2w+120 = 600

Combining like terms,
4w+120=600

Subtract 120 from both sides:
4w+120-120 = 600-120
4w = 480

Divide both sides by 4:
4w/4 = 480/4
w=120

The width is 120; the length will be 120+60 = 180

PLEASE HELP, ASAP!

Deborah is planting a rectangular garden. The garden is 15.25 feet long and 12.5 feet wide.

The formula for the area of a rectangle is A=bh.



What is the area of the garden?



Enter your answer as a decimal in the box.

Answers

27.75 hope it helps!

Answer: [tex]190.625\text{ feet}^2[/tex]

Step-by-step explanation:

Given:  Deborah is planting a rectangular garden.

The breadth of the garden (b)= 12.5 feet

The length of the garden (h)= 15.25

The formula for the area of a rectangle is given by :-

[tex]A=bh\\\\\Rightarrow\ A=12.5\times15.25\\\\\Rightarrow\ A=190.625\text{ feet}^2[/tex]

Therefore, the area of the garden = [tex]190.625\text{ feet}^2[/tex]

Please Help Me Asap! Urgent! PLEASE

Answers

Problem 1.

1/2 bag: peanuts
1/4 bag: choc candies
1/4 bag: dried fruit

Form the above, you can conclude:
Choc candy and dried fruit have the same likelihood of being drawn.
Choc candy and dried fruit have less likelihood of being drawn than peanuts.

A. False
B. False
C. False
D. True

Answer for problem 1. is choice D.


Problem 2.

Answer for problem 2. is A.

Jane has a checkbook balance of $68.00. She then writes two checks, one for $5.00 and one for $62.50. She also deposits $75.00. She then uses her calculator to determine her new balance. Which of the following is the correct series of keys she should press?

Answers

This is what she should press:
68 - 5 - 62.5 + 75
This would amount to $75.50 (Just to sate my curiosity)
 ON/C 6 8 – 5 – 6 2 . 5 0 + 7 5 =
She started out with $68 then you subtract $5 and & 62.50 Then you add the deposit of $75.00

(9r-5)-(-4r+9)
[tex](9r - 5) - ( - 4 + 9) [/tex]

Answers

The first step for solving this expression is to remove the first set of parenthesis.
9r - 5 - (-4 + 9)
In order to find the sum inside the parenthesis we must keep the sign of the number with the larger absolute value and subtract the smaller absolute value from the larger. This will look like the following:
+ (9 - 4)
Now subtract the numbers and add it back into the expression.
9r - 5 - 5
Now we will calculate the difference between -5 - 5 and add it back into the expression.
9r - 10
Since we cannot simplify this any further,, 9r - 10 is going to be the correct answer to your question.
Let me know if you have any further questions.
:)

A pizza stand offer both hand- tossed and pan pizza. customer can add any combination of the six available topping.

Answers

Final answer:

There are 12 varieties of pizza available based on the given options: 2 crust options and 6 topping options.

Explanation:

Pizzas can have different varieties depending on the toppings and crust options. Let's calculate the number of varieties we can get using the multiplication principle.

Suppose there are 6 available toppings and 2 crust options (hand-tossed and pan). A customer can choose any combination of these toppings. So, there are 2 options for the crust and 6 options for each topping. Using the multiplication principle, we multiply the number of options for each factor: 2 (crust) * 6 (topping) = 12 varieties.

Therefore, there are 12 varieties of pizza available based on the given options.

The number of possible outcomes for a pizza order is calculated by considering 2 crust types and 64 topping combinations, resulting in:

[tex]\[ 2 \times 64 = 128 \][/tex]

Thus, there are [tex]\(\boxed{128}\)[/tex]possible outcomes.

To solve this problem, we need to find the total number of possible outcomes for a customer ordering a pizza at the stand. There are two main choices to consider:

1. The type of pizza crust (hand-tossed or pan).

2. The combination of toppings (from a set of six available toppings).

Step-by-Step Calculation

Step 1: Determine the choices for the type of pizza crust

There are 2 types of crusts available:

- Hand-tossed

- Pan

This gives us 2 choices for the crust.

Step 2: Determine the choices for the toppings

For each of the 6 available toppings, a customer can either choose to include the topping or not. Each topping thus has 2 choices: include or not include.

Since the choices for each topping are independent, we can use the multiplication rule of counting (specifically, the rule for combinations):

[tex]\[2^{6} \text{ combinations of toppings}\][/tex]

Calculating this gives:

[tex]\[2^{6} = 64 \text{ combinations}\][/tex]

Step 3: Combine the choices for crust and toppings

The total number of possible outcomes is the product of the number of choices for the type of crust and the number of combinations of toppings.

[tex]\[2 \text{ (types of crust)} \times 64 \text{ (combinations of toppings)} = 128 \text{ outcomes}\][/tex]

Therefore, the number of possible outcomes in the sample space is:

[tex]\[\boxed{128}\][/tex]

Amanda wants to make a rectangular fenced area for her dogs. She wants the area to be 32 square feet with the length of the yard being twice the width. What would it cost Amanda to put up fencing for her dogs if the fencing costs $3.00 per foot? (Hint: Find the perimeter first.)

Answers

The fence is a 8x4 fence as they multiply up to 32 square feet and 8 is double 4. If you add 8+8+4+4 you will get 24. Then you multiply the perimeter (24) by 3 to get the final cost. This means that the final cost will be $72.00.

Which is the best display for the set of the number of daily 911 calls made during a month, if you want to be able to identify the mode?

A. Histogram with intervals of 5
B. Histogram with the intervals of 3
C. Line plot
D. Line graph

Please help me I can not and I mean CAN NOT figure this out by myself. So please please please help me ASAP!!!!!!!!!!!!!!!!!!!!

Answers

It is indead D. Line graph shows information over time.

Answer:C

Step-by-step explanation: It is line plot. The key word is mode. You can identify the mode more easily from a line plot than a line graph.


Lara solved an equation incorrectly, as shown below:

Step 1: 2x = 18
Step 2: x = 18 − 2
Step 3: x = 16

Which statement best explains why Step 2 is incorrect in Lara's solution?

A) She did not divide 18 by 2.
B)She did not add 2 to 18.
C)She did not multiply 18 by 2.
D) She did not multiply 18 two times.

Answers

The answer is b. 18/2=9

We have been given the steps to solve the equation as

Step 1: 2x = 18

Step 2: x = 18 − 2

Step 3: x = 16

There is an error in step 2.

We have [tex]2x=18[/tex]

x is in multiplication with 2. So in order to get rid of 2 from the left hand side, we perform opposite operation of multiplication i.e. division.

So we must divide both sides by 2.

Therefore, A is the correct option.

A) She did not divide 18 by 2.

Which of the following shows that polynomials are closed under subtraction when polynomial 3x2 + 4 is subtracted from x2+ 2x + 5?
−2x2 + 2x + 1 may or may not be a polynomial
2x2 − 2x − 1 will be a polynomial
−2x2 + 2x + 1 will be a polynomial
2x2 − 2x − 1 may or may not be a polynomial

Answers

For this case we have the following polynomials:
 [tex]3x ^ 2 + 4 x ^ 2 + 2x + 5[/tex]
 Subtracting both polynomials we have:
 [tex](3x ^ 2 + 4) - (x ^ 2 + 2x + 5) [/tex]
 Subtracting terms from the same exponent we have:
 [tex]x ^ 2 (3-1) - 2x + (4-5) [/tex]
 Rewriting we have:
 [tex]2x ^ 2 - 2x - 1 [/tex]
 Answer:
 [tex]2x ^ 2 - 2x - 1[/tex] will be a polynomial

vic is driving 450 miles to his grandma's house. if vic can drive 25 miles per gallon of gas,how many gallons if gas will he use round trip

Answers

In order to find the answer to this question, you need to multiply 450 by 2 to find the amount of miles in the round trip, which is 900.

Next, you divide 900 by 25, because that will leave you with the amount of gas it needs. 

So the answer is 36.


P.S. I don't know if 450 miles is round trip or it is half. But if it is half, the answer would be 18

Tessa surveyed the students at her school to find out if they like music and/or dance. The table below shows the results of the survey:



Like Music


Do Not Like Music


Total

Like Dance

23

13

36

Do Not Like Dance

7

7

14

Total

30

20

50



If a student likes music, what is the probability that student also likes dance?
76.7%
63.9%
46.0%
30.4%

Answers

I think it's A - 76.7%. I can't be certain; but I hope this helps.

Answer:A) 76.7%

Step-by-step explanation:

the odometer in Mr Washington's car does not work correctly the odometer recorded 13.2 miles for his last trip to the hardware store but he knows the distance traveled is 15 Mi what is the percent error

Answers

12 percent is the error.
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