Mathematics Middle School

True or false:
1. 7 = (-5) - (-12)
2.The difference between -5 and -12 is equal to (-5) - (-12)
3.The difference between -12 and -5 is equal to (-5) - (-12)
4.(-5) + 12 = (-5) - (-12)
5.(-5) + (-12) = (-5) - (-12

Answers

Answer 1

Answer:

1. True

2. True

3. False

4. True

5. False

Hope this helps! :)

Answer 2

Answer:

true

Step-by-step explanation:

Related Questions

At a school carnival, tickets can be purchased to participate in different activities. The table shows the total cost for different numbers of tickets.


What is the constant of proportionality that relates y , the total cost in dollars, to x , the number of tickets purchased?




PLZ I HAVE TO FINISH THIS TEST TODAYYY

Answers

Answer:

4 tickets for $1

Step-by-step explanation:

I just divided 8 with 2.00 and got 4.

The value of the constant of proportionality that relates y, the total cost in dollars, to x, the number of tickets purchased is 1/4.

What is a proportional relationship?

It is defined as the relationship between two variables when the first variable increases, the second variable also increases according to the constant factor.

It is given that:

At a school carnival, tickets can be purchased to participate in different activities.

The data are shown in the picture.

From the data:

y ∝ x

Removing the proportional sign:

y = kx

Plug x = 8

y = 2

2 = 8k

k = 1/4

Thus, the value of the constant of proportionality that relates y, the total cost in dollars, to x, the number of tickets purchased is 1/4.

Learn more about the proportional here:

brainly.com/question/14263719

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Determine how far the vehicle travels in 3 hours. A ferry travels 45 miles every 1 1/2 hours.

Answers

Answer:

Um 90 miles lol

Step-by-step explanation:

90 because 1.5 hours x 2 is 3. So 45x2 is 90 - meaning 90 miles in 3 hours

11) slope and y-intercept, if the answer ignore this if you do know the answer than plz answer

Answers

Answer:

Slope : -1

Y-intercept : (0,6)

Step-by-step explanation:

Answer:

Slope: -1

y-intercept: 6

Step-by-step explanation:

Lets figure out the slope with the formula, [tex]\frac{y2 - y1}{x2-x1}[/tex]. Take 2 coordinates and substitute them in. Lets take (-3,9) and (-1,7). Here are the steps:

[tex]\frac{7-9}{-1-(-3)}[/tex]

[tex]\frac{-2}{-1+3}[/tex]

[tex]\frac{-2}{2}[/tex]

[tex]-1[/tex]

Now we know that the slope is -1, so m = -1.

Lets figure out the y-intercept. We have to have an equation with the slope in it. Since we don't know the y-intercept yet, we will use the equation y = -x + b. Lets take the coordinate (5,1). Substitute the coordinates in. Here are the steps:

1 = -5 + b

b = 6

Now we know that the y-intercept is 6, so b = 6. I hope this helped!

Find the slope of the line that passes through (8, 4) and (5, 2).

(Type your answer in like this: 1/4, for example.)

Answers

Answer:

Slope (m)0.6667Slope-Intercept: y = mx + by = 0.6667x -1.33

Step-by-step explanation:

Please help me I will give you the brain thing and extra points (image below) 2/5

Answers

Answer:

The slope is 0

Step-by-step explanation:

here the thing to remember

If you can walk on the line, the slope is 0, if you can’t it’s undefined

Yah it’s 0 just to resure you

Which vertex of the rectangle has the coordinates (-3,4) ASAP

Answers

Answer:

The answer is A.

Step-by-step explanation:

Have a good day/night :)

Answer:

A

Step-by-step explanation:

(-3,4) would be in A of the rectangle because -3 is x and that would be 3 spaces to the left from the (0,0) point and 4 is y and that is 4 spaces up from (0,0)

A fish tank contains 8 neon tetras and 12 guppies. What is the ratio of neon tetras to guppies?
A.1:5
B.2:3
C.3:2
D.2:5

Answers

B: 2;3

Step-by-step explanation:
GCF(greatest common factor) of 8 and 12 = 4
8/4=2 and 12/4=3
The answer is b .
U simplify.
2 into 8 goes 4 times
2 into 4 goes 2 times
2 into 12 goes 6 times
2 into 6 goes 3 times

So the answer is 2:3

I really need help with this. don't do this for the points, please.

Answers

Answer:

4 months

Step-by-step explanation:

I first did 45 minus 125 then divided it by 20 because that how much he pays each month. So the answer has to be 4 months.

A skydiver falls at a rate of 144 feet in three seconds. How far is he falling each second?

A) 141 ft
B) 432 ft
C) 48 ft
D) 147 ft

Answers

the correct answer is c
The correct answer is C

Charlene has 2 flash drives of the same size that she uses to store pictures and videos. Each drive is holding the same number of GB of data, d. She wants to move everything to a memory card that can hold up to 8 GB

A) Charlene is going to delete 1 GB of data from each flash drive. How can the total amount of data left on the two flash drives be represented as an expression?

B) How can the expression you wrote be used to write an inequality that shows the maximum amount of data each flash drive can have on it in order to have all the data transfer to the 8 GB memory card?

Answers

867-5309

If you are a gunter dont respond to this

How much of a kilometer is a 100 m sprint?

Answers

1/10
As 1km is 1000 meters, so 100/1000 = 1/10

Answer:

0.1

Step-by-step explanation:

The metric sysetem

I am only doing 15 points because I have asked questions and they just take advantage of the points and don't actually answer the question.

Mrs. Jones husband thought he could fix the clogged sink drain. In doing so he lost the drain snake down the pipe and had to call a plumber. Roto-Rooter charged a $50 home visit fee and an hourly rate of $35 an hour.

Write an equation in slope-intercept form to represent the total cost of the plumbers fees.
y represents the total cost and x represents the number of hours.



Write another equation where t represents the total cost and h represents the number of hours.



What does the y-intercept represent in this problem?



What does the slope represent in this problem?




The plumber was at Mrs. Jones house for 4 hours. What is the total cost for the plumbers visits?

Answers

The answer to your question would be y=35x+50

Which ordered pair is located on the x-axis?

(0, -5)
(0, -5)

(1, -5)

Answers

Answer:

-5,0

Step-by-step explanation:

Each order of nachos costs $3.75 at the concession stand and each drink costs $2.25. Which statement is true if Sarah bought three orders of nachos?

A
The product of 3(–2.25) means Sarah has $6.75 less when she bought 3 orders of nachos.

B
The product of 3(2.25) means Sarah has $6.75 more when she bought 3 orders of nachos.

C
The product of 3(–3.75) means Sarah has $11.25 less when she bought 3 orders of nachos.

D
The product of 3(3.75) means Sarah has $11.25 more when she bought 3 orders of nachos.

Answers

Answer:

C i think not so sure bro gl tho

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

What is the mass of a triangle?


9/5 grams

7/5 grams

3 grams

11 grams

Answers

3 grams i believe hope u get it right

Write the power of 10 to multiply the divisor by to make it a whole number. Then, write the equivalent problem and find the quotient.

16.65 divided by 0.37
i need halp wit this and also i brainly keeps deleting meh questions

Answers

Answer:

45

Step-by-step explanation:

The equivalent problem is 16.65×10²/0.37×10² and  the quotient is 45.

What is a quotient?

In arithmetic, a quotient is a quantity produced by the division of two numbers. The quotient has widespread use throughout mathematics, and is commonly referred to as the integer part of a division, or as a fraction or a ratio.

Given that, 16.65 divided by 0.37.

Now, multiply both numerator and denominator by 10², we get

16.65×10²/0.37×10²

= 1665/37

= 45

Therefore, the quotient is 45.

Learn more about the quotient here:

https://brainly.com/question/16134410.

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1. Find the value of each expression. Show your work.
(a) 1.2^2
(b) 2^3 + 17-3x4
(c) 9^2 divied by 3^3

Answers

Answer:

a) 1.44

b) 13

c) 3

Answer:

a) 1.44

b) 13

c) 3

Step-by-step explanation:

a) 1.2 • 1.2 = 1.44

b) (2 • 2 • 2) + 17 - (3 • 4)

   (8) + 17 - 12

   8 + 5 = 13

c) (9 • 9) ÷ (3 • 3 • 3)

   81 ÷ 27 = 3

Hope this helps!

Look at this inequality: 12−4x ≤ 20

Which of these shows the solution to this inequality?

Question options:

Answers

Answer: The last line is the answer

12 - 4x < 20

20 - 12 = 8

-4x = 8

-4/4 = 8/-4

x = -2

New inequality: x > -2

Step-by-step explanation:

The correct option is d. The solution to the linear  inequality 12 - 4x ≤ 20 is x ≥ -2 by solving the inequality.

To solve this inequality,  to isolate the variable x.

Step 1

subtract 12 from both sides of the inequality:

        [tex]12 - 12 - 4x \leq 20 - 12,[/tex]

which simplifies to

         [tex]-4x \leq 8.[/tex]

Step 2 :

Divide both sides of the inequality by -4. However, when  divide by a negative number, the direction of the inequality sign must be flipped. So   x ≥ -2, indicating that x is greater than or equal to -2.

Therefore, the solution to the inequality is x ≥ -2. The correct option is d.

Learn more about solving inequalities here:

https://brainly.com/question/21857626

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Lucita does the division problem 3.302 ÷ -1.27, and gets -0.026. She doesn't understand this result because she had estimated the answer to be -3. What was Lucita's mistake?
A: Lucita's estimate is too low.
B:The decimal point should be to the left of the 2.
C:The decimal point should be to the left of the 6.
D:Lucita's estimate is too high.
Thank you to those who end up helping, xx

Answers

Lucita does the division problem. My dad told me you divide the biggest number. (3.302) with the little valued number (1.27) She doesn't understand not because (A) her estimate is too low.

So that leaves A eliminated.

It shouldn't be B because, you have to count the numbers to the left of the decimal.

So that leaves B eliminated.

Let's talk about D, Her estimate is too high. But, take a risk. Either choose C or D. Good luck! I really think this would help thanks to my dad's method.

A sand wedge normally costs $65.00. It is on sale for 20% off the regular price. What is the discount of the sand wedge? A) $15.00 B)$16.25 C) $46.00 D) $52.00

Please..help​

Answers

Answer:

D

Step-by-step explanation:

20% of 65 is 13

65-13=52

I think it’s D 20% of 65 is 13 so if u do the rest it should be D

The solution to the following equation is x=0
6x+7= 1/2x+7

True
or
False
(The 1/2 is a fraction)

Answers

Answer: True

Explanation:
If X=0 then that would make the problem 6(0)+7=1/2(0)+7. Anything multiplied by 0 is 0 so that would cancel the 6 and the 1/2. That means that you would be left with 7=7

Answer:

True

Step-by-step explanation:

To see if that is the solution, lets solve the equation.

6x + 7 = 1/2x + 7

Subtract 1/2x from each side to bring it to the right

6x - 1/2x + 7 = 7

Subtract 7 from each side to bring it to the left

6x - 1/2x = 7 - 7

Simplify it

5.5x = 0

Divide 5.5 from each side to leave x alone.

x = 0

The answer is true. I hope this helps!

Which graph represents the solution of the inequality 4−x≥10 ? K SO I KINDA DREW THE NUMBER LINE BUT WHERE YOU SEE THE 1ST ARROW FROM THE RIGHT,THAT'S WHERE IT STARTS! PLZ HELP ME ALSO ALL THE NUMBERS ARE NEGATIVE:)

--← ← ← ← ← ←------------------------------------------- A. starts at 6
10 9 8 7 6 5 4 3 2 1 0

-----------------→ →→→→→→→→→→→- B. starts at 6
10 9 8 7 6 5 4 3 2 1 -0

---←----←---←-------------------------- C. starts at 7
10 9 8 7 6 5 4 3 2 1 -0

--------------→ →→→→→→→→→→→→→-------------------------- C. starts at 7
10 9 8 7 6 5 4 3 2 1 -0

Answers

if i’m not wrong the answer should be c

I need help with my math problem..

Answers

Answer:

5 1/3

Step-by-step explanation:

i did 2/15 x 40 minutes

I believe 5 1/3 hope this can help!

Please help me on this, it needs to be done quickly. Read the image.

Answers

Answer:

3.07

Step-by-step explanation:

i would choose 3.07 as the answer

When 1480 is divided into 12 equal parts, the remainder is 4. What is a correct way to write the quotient?

123.4

1234 over 12

123 + 4

1234 over 1480

Answers

Answer:

123 + 4

Step-by-step explanation:

whenever there is a remainder you write something + the remainder

A bunch of bananas cost $4, a pineapple cost $2 more than a bunch of banana, and 4 apples cost one-half of a pineapple.
1. Write an equation that shows the cost of a pineapple in terms of bananas. Use this equation to find the cost of a pineapple.
2. Write an equation that shows the cost of 4 apples in terms of a pineapple. Use this equation to find the cost of 4 apples.
3. Write an equation that shows how much more a bunch of bananas cost compared to4 apples where x is the unknown value. Then, solve the equation.

Answers

X=1
I did this yesterday

For lunch with her friend, Kristionna is purchasing several side items that cost a total of $18, plus 2 sandwiches. The total cost of the meal is $32 and is represented by the equation 2x + 18 = 32. How much does each sandwich cost?
A) $14
B) $22
C) $7
D) $28

Answers

Answer:

C

Step-by-step explanation:

thee equation they give us is 2x + 18 = 32. Our goal is to isolate x.

First, subtract 18 from both sides to eliminate it.

2x + 18 = 32 ---> 2x + 18 - 18 = 32 - 18 ----> 2x = 14

Next, separate the 2 from the x by dividing it from both sides:

2x = 14 ----> 2x/2 = 14/2 ----> x = 7

By solving this equation, we find that x, or one sandwich, costs $7.

Its C did my math in a paper........:)

I need help with this question.
Pls help.

Answers

Answer: its model, graph, and scale

Step-by-step explanation:

Answer:

Metric units of measurement differ by powers of 10 - 10, 100, 1,000, and so on. Thus, converting from one metric unit to another is always accomplished by multiplying or dividing your initial measurement by the appropriate power of ten.

Step-by-step explanation:

this is a khan academy question

Answers

The answer is... A because your trynna find the answer and -2 1/2 is different from there first number so you separate them from each other

Hope this helps

Answer:

Its A hope this is correct, please give me brainliest, my dog died today :(

Step-by-step explanation:

please help. I really need it.

Answers

It’s b and d because when simplified they’re both 25/1
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