Mathematics Middle School

PLZ HURRY
Solve for z.

z

3

–3≤

–

2

Answers

Answer 1

Answer:

z ≤ 1/3

Step-by-step explanation:

3z - 3 ≤ -2        Add 3

3z ≤ 1               Divide by 3

z ≤ 1/3

Answer 2
I’m so confused

I’m so confused

Related Questions

If the radius is 40 ft, what is the area of the circle?

Answers

Answer:

A = pi(r)^2

A = pi(40)^2

A = 1,600pi sq. ft.

Therfore the answer is C.) 1,600 pi sq. ft.

I hope this helps you!!

Answer:

C - 1600[tex]\pi[/tex] sq. ft.

Step-by-step explanation:

Since the answer has to be in terms of pi, we can exclude that from the equation.

The formula to find the area of a circle is [tex]\pi r^2[/tex] where r is the radius. If we plug in 40 for r, we get 1600[tex]\pi[/tex].

PLEASE HELP ME ASAP!!!!!

Answers

Answer:

Step-by-step explanation

Lines LP and QM are parallel, meaning KLP and QMN are supplementary

So KLP +QMN=180

3x+72=180

3x=108

x=36

You want to know whether the students in your school enjoy the school lunch. You survey every student in your class. Is this survey biased or unbiased?

A)Unbiased because the sample only included the students in one class.
B)Biased because the sample only included the students in one class.
C)Biased because the sample included all the students in the class.
C)Unbiased because the sample included all the students in the class.

Answers

Answer: B

Step-by-step explanation:

i think it is a a a a a a. a

pleaseee helpppp. is this right ???

Answers

Answer: Yes

Step-by-step explanation:

Answer: yes it is correct because they ARE interior angles on the same side of the transversal

Select all the expressions which are equivalent to –3(0.15 – 0.2 + 0.25p).
A)–0.45 – 0.6 + 0.25p
B)0.15 – 0.75p
C)3(0.15 + 0.2 + 0.25p)
D)–3(–0.05 + 0.25p)
E)–3(0.05 + 0.25p)

Answers

The answer for this is A
-3(0.15 - 0.2 + 0.25p) = -0.6p

The answers are B and D

Basic understanding series
#5-multiplying negative numbers
—————
give 3 examples on multiplying negative numbers and an explanation for other problems similar to those.
-
brainliest/five star question: give a real world example of multiplying negative numbers

Answers

Answer: 3 x (-7)       -6 x (-4)       -156 x (  65 )

Step-by-step explanation:

negative times negative= positive

negative times positive= negative

positive times negative= negative

Real world example:

you have -15 dollars in your saving account and want how many times you will still be able to take money out of your account before you owe more than 100 dollars.

Answer) 3x(-7) -6 X (-4) -156 X (65)

Negative times a positive= positive
Negative times a negative= positive
Positive times a negative= negative

Jack tried to define a rotation.For the center point CCC, the image C'C ′ C, prime is at the same point as CCC. For a point PPP that is not at CCC, a rotation of \thetaθtheta about point CCC creates point P'P ′ P, prime, such that CP=CP'CP=CP C, P, equals, C, P, prime and m\angle PCP'=\thetam∠PCP ′=θm, angle, P, C, P, prime, equals, theta. What mistake did Jack make in his definition of a rotation?

A
Jack needed to include the direction of the rotation.

(Choice B)
B
m\angle CPP'm∠CPP
′
m, angle, C, P, P, prime must equal \thetaθtheta.

(Choice C)
C
Point CCC must be the midpoint of PP'PP
′
P, P, prime.

(Choice D)
D
Jack did not make a mistake.

Answers

the answer is A because jack needs to find the point of ccc no i don’t want to get up to me and you
I think it’s B hope that helps

what is 0.3113 rounded to the nearest thousandths?

Answers

Answer: 0.311

Step-by-step explanation:0.3113 the 3 is lower then 5 so the 1 stays the same

50 POINTSS!!! PLEASE HURRY!!!

Answers

ANSWERS:


The answer for number 3 is: a line can be drawn through at least two of the points.

The answer for number 4 is: on the line of best fit.


I hope this really helped out a lot. :)

Hurry please


If you need better or more pictures please tell me

Answers

Answer:

Step-by-step explanation:

its that answer because i have done this before and know its the answer that is the answer

PLEASE HELLPPPP!!!! I HAVE NO IDEA WHAT IM DOING

Answers

Answer:

A

Step-by-step explanation:

I think A is the answer because Its the closest one to the plot and what question is asking for

The answer is D you can eliminate b and c cause they don’t make sense and A is not a characteristic you use to determine best fit.

Please help ASAP: Mr.Rodriguez bought a jacket at $69.50, a tie at $15.50 and a raincoat at $75.35. If he received a discount of 12 1/2% on each of these items then what was his bill?

Answers

Total bill is $140.30

Mr. Rodriguez's bill after receiving a discount of 12 1/2% on each item is $140.30.

To calculate Mr. Rodriguez's bill after receiving a discount of 12 1/2% on each item, we need to find the discounted price for each item and then add them together to get the total bill.

First, let's calculate the discount for each item:

Jacket: 12.5% of $69.50

Discount on jacket = 12.5/100 * $69.50 = $8.69

Tie: 12.5% of $15.50

Discount on tie = 12.5/100 * $15.50 = $1.94

Raincoat: 12.5% of $75.35

Discount on raincoat = 12.5/100 * $75.35 = $9.42

Now, subtract the discounts from the original prices to get the discounted prices for each item:

Jacket price after discount = $69.50 - $8.69 = $60.81

Tie price after discount = $15.50 - $1.94 = $13.56

Raincoat price after discount = $75.35 - $9.42 = $65.93

Finally, add the discounted prices of all items to find the total bill:

Total bill = $60.81 + $13.56 + $65.93 = $140.30

To learn more about discount click on,

https://brainly.com/question/28184203

#SPJ2

What are the relationship between the sides, shape, and area of a scaled drawing to the actual object?

Answers

Answer:

The scale factor for area is found by squaring the scale factor for length. Thus the scale factor for area is s2. If this is reversed, a method is provided for solving the problem being investigated. The scale factor for area is 2.

Step-by-step explanation:

2 friends shared 48 pineapple equally among themselves. One of the friends sold all his pineapple each at $5.How much did he get from selling the pineapples?

Answers

Answer:

$120

Step-by-step explanation:

48 pineapples shared equally by 2 people.

48/2 = 24

Each friend got 24 pineapples.

24 × $5 = $120

Answer: $120

Answer: $120

Step-by-step explanation:

Step 1: Find how many 1 person gets (pineapples per person)

48 pineapples divided by 2 people= 48÷2= 24 pineapples each.

Step 2: Money made by 1 person

He has 24 pineapples to sell because that's how many he is supposed to receive. he sells all of them for $5 each, so the total money he makes is 5x24= $120

Checks:

120÷24= 5

the pineapples are 5 dollars each (this is correct).

Hope this helps!

A class of students recorded the amount of time spent on homework on Monday night. The times are recorded below, in ours. Use the data to answer question 8-10

1 3/4 2 1/4 2 2 3/4

1 1 3/4 1 1/4 3

3 1/4 3 3/4 2 2


8. Make a line plot of the data shown above. Be sure to include a title and correctly label each value


9. Julie says the most amount of time spent on homework is 1 1/2 times the lest amount of time spent on homework. Is she correct? Explain.

10. Daniel says that more than half the students spent 2 1/2 hours or more on homework. Liz says more that half the students spent less than 2 1/2 hours on homework. Who is correct? Explain.

I need help ASAP

Answers

The line plot is the smallest fraction to the biggest and how many times that fraction was said is how many x’s go on top of that fraction for instance
The smallest number is 2 is the smallest so make a line plot and put the smallest number then the next biggest number then to the biggest and put a x over how many times that was used

Question 10
Please help (Someone gave me the wrong answer and now I'm stuck)

Answers

Answer

20 is 5%

1 fifth of hunderd that is 20%

=20%

C is the answer
lalalshjsb

make a the subject of the formula


9a=10b

Answers

Answer:

1=ab

Step-by-step explanation:

you do mines 9a to both side with will lead you to 1

1=ab that’s the answer

Which answer choice contains a system of equations?

Answers

Answer:B

Step-by-step explanation:

✨ It’s B ✨ Hope this helps













Solve the equation 29 = v + 23 for v.

−52
−6
6
52

Answers

v + 23 = 29
- 23 -23
v=6

Answer:

29

Solving Algebraic EquationsRules

To solve, you must isolate the variable. This means moving the variable and it's coefficient to the other side of the equation with only the same variable on the same side with all the constants on the other side.

If you multiply, divide, add, subtract, square root, exponent both sides of the equation by the same value, that end value stays the same.

Terminology

Variable: Any letter than stands for a value than can be solved and change value. (i.e. x, y, z, a, etc.)

Coefficient: The number right before a variable (without being separated by an operator). It is a multiplication factor for a variable. Basically, it's just a way to express what you are multiplying a variable by.

If the coefficient is 1, it means [variable] * 1. 1[variable]

Q)

Subtract 23 on both sides.

29 - 23 = v + 23 - 23

v = 29

One of a tree's rings has a diameter of 6 inches. What is the circumference of the tree's rings? Use 3.14 for π

C = ? inches

? = missing answer

(will give thanks + 5 star rating)

Answers

Answer:

C=18.84

Step-by-step explanation:

C=2*3.14*r

r=diameter/2

Answer: 28.84

Reason: 6 X 3.14

The table shows the relationship between the cost of monthly cell phone Plan A and the number of minutes used within a month. The equation c= 35+0.05m describes the relationships for the cost c in dollars for minutes m used for Plan B.

Time (min) Cost ($)
0 30.00
2 30.20
4 30.40

What is the difference, in dollars, of the total costs of the cell phone plans if a customer talks for 20 minutes?

Answers

Answer:

It should be $50.00.

Step-by-step explanation:

It shows that every 2 mins. adds 20 cents to the bill. I wrote out the numbers and did this:

6 30.60

8 30.80

10 40.00

12 40.20

14 40.40

16 40.60

18 40.80

20 50.00

Answer:

152

Step-by-step explanation:

Just multiply; for example, it says for every 4 minutes 40 cents are added to the cost. If you multiply that times 5 you will get your answer.

Hope this helps

The problem says: Jake cuts out five-pointed stars. They are different sizes, but they all have the same shape. The side lengths within each star are the same. To find the perimeter of each star, Jake uses the expression to find the perimeter of each star, Jake uses the expression 12E+1/2+4E-8.5+2E+8, where E is the side length of the star.
PART A: FIND THE PERIMETER OF A STAR WITH SIDE LENGTH OF 6 INCHES. SHOW YOUR WORK.
PART B. CHECK YOUR ANSWER TO PROBLEM 3 A. SHOW YOUR WORK.

Answers

Answer: 60

Step-by-step explanation: 12L+1/2=72.5

72.5-24-8.5+20

72.5-24=48.5-8.5=40

40+20=60

I NEED HELP ASAP!!!!!!!!

Answers

Answer:

Step-by-step explanation:

PQS and RQS are supplementary

PQS +68=180

PQS =112

x+ 112+TSQ=180

4x=3x+TSQ

TSQ=x which means

2x+112=180

2x=68

x=34

Ref to the fig
PQS+68=180(adj angle on st.line)
PQS=112
PSR=4x( opp angle st.line)

PSQ+3x=4x
PSQ=x

X+PQS+PSQ=180(angle sum of triangle)
2x+112=180
2x=68
x=34

Question 10
In a store, a $250 dress is marked, "Save 35%". What is the sale price of the
dress? Justify your answer.

Answers

Answer: $162.50 is the answer

Step-by-step explanation: Multiply 250 by .35 and you get 87.5 which is the amount that is subtracted

$162.50 is the correct answer

2/5x−2+3(x−4) simplified

Answers

Answer:

17x-70/5

Step-by-step explanation:

help me with this please

Answers

The formula for the surface area of a cylinder is [tex]2\pi rh+2\pi r^{2}[/tex]. Using this, you can calculate that the cylinder's total surface area is 56[tex]\pi[/tex]. But, since Adrian only needs to find the surface area outside of the tire, I'm going to assume that you only need to apply [tex]2\pi rh[/tex] to your problem. Therefore, the answer is 24[tex]\pi[/tex] or 75.4 (rounded to the nearest tenth). I hope this helps!

consider 2 1/2 divided by 1/4
(a) Write a real-world problem for the division.
(b) Create a model or write an equation for the division.
(c) Find the quotient for the real-world problem in part
(a). Show your work or explain your reasoning.

Answers

i just scanned on math app lol

Solve the equation

3x-5< 8x-1/2

x+7≤ 4x+1

Answers

This is all I got. Hope this helps:
These are the steps following up to the answer

Solve For X. 5 - 2x^2 = -15

Answers

Answer:

[tex]\sqrt{10}[/tex]

Step-by-step explanation:

5 - 2x^2 = -15

2x^2 = 20

x^2=10

x= [tex]\sqrt{10}[/tex]

-15-5= -20
Thus, -2x^2 = -20
Then -20/-2= 10
So, x^2 = 10
When you square root both of them, the answer is root 10

The length of Ruben’s rectangular backyard is 10 meters more than the width. If the perimeter of the backyard is 220 meters, what is the length of the rectangular backyard?

Answers

Answer:

60

Step-by-step explanation:

given: length = 10m + width

perimeter = 220

find length of backyard

Solution

let us assume width = x

length = 10 + width

10 + x

perimeter of rectangular backyard = 2( length + width)

= 220 = 2 ( 10 + x + x )

= 220 = 2 ( 10 + 2x )

= 220 / 2 = 10 + 2x

= 110 - 10 = 2x

= 100/2 = x = 50

so, according to above solution and Q.

width = x = 50

length = 10 + width = 10 + x = 10 + 50 = 60

So the answer is 60

Hope this helps and if I'm wrong I sincerely apologize

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To determine whether it has completely dissolved, hold the container up to the light and look carefully at the bottom, or open the lid and look into it. If you see little grains of salt there, it is not completely dissolved, so keep shaking until it looks the same each time you look.If the salt does not dissolve completely after five minutes of vigorous shaking, write this in your notebook and go on to step 4. If the salt dissolves completely, add another 1/8 teaspoon of salt and repeat the process. Repeat over and over, keeping track of how many 1/8 teaspoons you add. Stop when you cant get the salt to dissolve no matter how hard or long you shake the container.Record how much salt you were able to dissolve in the 3 Tablespoons of water in the solubility data table.Repeat steps 1-4, but this time using very warm or hot water. Before you do it, run the jar under hot water to warm it up so the water doesnt cool off right away. Be sure to use the exact same amounts of water and salt as you did the first time. The only variable should be the temperature of the water.Record your results, and then compare with your previous results.Answer the following questions:Were there any differences in the amount of salt that dissolved in the warm water versus the cold water?Write a conclusion based on your results, using the terms temperature and solubility.Based on your results, answer this question: If the oceans of the earth got warmer from global warming, would the water of the oceans become more or less salty? What do you think the effect of this change in the ocean salinity (saltiness) would be on the plants and animals that live in the ocean?Once you have completed the activity and answered all the questions, turn your assignment in here. To see how this assignment will be graded, click tHow much salt will one teaspoon of water dissolve?