Mathematics Middle School

solve for z: -21 = z - (-6 - 2z)

Answers

Answer 1

Answer:

z = -9

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Algebra I

Terms/Coefficients/Degrees

Step-by-step explanation:

Step 1: Define

-21 = z - (-6 - 2z)

Step 2: Solve for z

Distribute negative:                      -21 = z + 6 + 2zCombine like terms:                     -21 = 3z + 6Isolate z term:                               -27 = 3zIsolate z:                                        -9 = zRewrite:                                         z = -9
Answer 2

Answer:

Step-by-step explanation

-21-6=2z+z

Or,-27=3z

Or,z=-9

Related Questions

What is the variable equal to?
6x = 24
Group of answer choices

x = 5

x = 3

x = 144

x = 4

Answers

Answer: x=4

Step-by-step explanation: Divide by 6 on both sides to get x=4

6x/6=24/6

x=4

x = 4

Divide both sides by 6

6x/6 = x

24/6 = 4

x=4

A bag of nuts weighs 3 ounces and costs 50 cents. What is the unit price? Round to the nearest cent.
50 ÷ _____ = _____-
per ounce

Answers

Answer:

50 cents/3 ounces = 16.67 cents/ounce

Step-by-step explanation:

maybe

The answer is 50 by 3 =17

pleaseee answer right ill give brainliest

Answers

Answer:

-3 coins per wish

Step-by-step explanation:

Answer:

-3 coin per wish

Step-by-step explanation:

because every time she makes a with she loses 3 coins

Nancy is replacing the mat on her trampoline. The circular mat has a diameter of 18 feet. what is the area of the trampoline mat to the nearest square foot?


Someone please help me <3 :( :)

Answers

Answer : 254 ft sq

A = pi x r^2

A = 3.14 x 81

Car survey
In a survey of 3,200 people who owned a certain type of car 2,080 said they would buy that type o& car again. What percent of the people surveyed were satisfied with the car?

Answers

Answer:

65%

Step-by-step explanation:

yes i changed it because i don't want to confuse anyone:)

Answer:

65%

Step-by-step explanation:

What is the ratio of green stars to red stars?

Answers

Answer: 2:3

Step-by-step explanation: 4 divided by 2 is 2

                              6 divide by 2 is 3

Answer:

Answer down below :))

Step-by-step explanation:

The ratio could be 4:6

But since that isnt on the answer, your best best is to cut it in half!

The half version is 2:3

Im sorry if its wrong!

15 points

Which statements are true about the ordered pair (7, 19) and the system of equations?

{2x−y=−5 x+3y=22


Select each correct answer.


The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.

The ordered pair (7, 19) is a solution to the second equation because it makes the second equation true.

The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.

The ordered pair (7, 19) is a solution to the system because it makes both equations true.

Answers

Answer:

3 and 2 i think

Step-by-step explanation:

2,3 need an explaination?

i saved the best for last :]

Answers

Answer:

a¹⁸b²⁴c⁵⁴

Step-by-step explanation:

(aᵇ)ᶜ = aᵇᶜ = aᵇ×ᶜ

(-aⁿ)ᵒᵈᵈ = -aⁿ

(-aⁿ)ᵉᵛᵉⁿ = aⁿ

aⁿ × aⁿ = aⁿ⁺ⁿ

_________

In this situation, 6 is an even exponent which means that the negative coefficient of this 9th degree monomial will be positive. Now the only step is to multiply the exponents by the exponent outside of the perenthesis which is 6.

so (-a³b⁴c⁹)⁶ = ((-a³)⁶(b⁴)⁶(c⁹)⁶) = ((a³ˣ⁶)(b⁴ˣ⁶)(c⁹ˣ⁶)) = ((a¹⁸)(b²⁴)(c⁵⁴)) = a¹⁸b²⁴c⁵⁴

In a museum there is a sculpture in the shape of a cylinder. The cylinder has a diameter of 18 feet and a height of h feet. Which equation can be used to find V, the volume of the cylinder in cubic feet?

V = π(9)2h

V =π (9h ) 2

V = π(18)2h

V = π(18h) 2

Answers

Answer: The first one

The owner of a small store buys coats for $55.00 each answer part a and d

Answers

Answer:

120%

Step-by-step explanation:

The answer is 120%




On edg

State whether the number is a solution to the giving inequality.


n>9/16;7/12

Answers

yes it is because you find the LCM which is 48 so then you convert those 2 fractions to have a denominator of 48 so 7/12 becomes 28/48. next you change 9/16 which becomes 27/48. now your equation would be 28/48>27/28

HEWP PWS
:c
I don’t know da answer x.x

Answers

Answer:

(I think its C sorry if i get you wrong)

(Hope this helps)

Answer:

The answer is C.

Step-by-step explanation:

C.) y=10 (0.13)^x

The number inside parentheses is less than one so the number would decrease.

On a hiking trip, Melissa notes that she hikes about 16 kilometers every 2.5 hours. If she continues at this rate, about how many kilometers she could hike in 8 hours. Use at least 2 ways to show your answer.

Answers

Answer:

so if she hike 12 km every 4 hours, how many km could she hike in 6 hours.

first u have to find the equation. 12 km=4hours

? =6hours

and then you have to multiply 12 km by 6 hours and divide the results by 4 which is 12×6÷4. the final answer will be 18 kilometers.

Step-by-step explanation:

Sorry if its wrong

David divides his allowance equally over 5 days. Each day he has $4 to spend. How much is David’s allowance?

Answers

Answer:

its 20 dollars

Step-by-step explanation:

multiply 5 times 4

answer the blank
lately i feel so ________

Answers

Answer:

Tired

Step-by-step explanation:

HUNGRY bru I be starving

Students in a political science course were asked to describe their politics as "Liberal", "Moderate", or "Conservative." Here are the results: Politics Liberal Moderate Conservative Total Female 40 34 14 88 Male 48 50 26 124 Total 88 84 40 212 Given that the student is male what is the probability that he considers himself to be a "Liberal"? Round your answer to three decimal places if necessary. a. 0.226 c. 0.387 b. 0.415 d. 0.455 Please select the best answer from the choices provided A B C D

Answers

Answer:

a

Step-by-step explanation:

The probability that he considers himself to be a "Liberal is 0.387.

Option C is the correct answer.

What is probability?

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

Example:

The probability of getting a head in tossing a coin.

P(H) = 1/2

We have,

The probability that a male student considers himself to be a "Liberal" can be found by dividing the number of "Liberal" males (48) by the total number of males (124):

P(Liberal | Male) = 48/124

P(Liberal | Male) = 0.387 (rounded to three decimal places)

Therefore,

The probability that he considers himself to be a "Liberal is 0.387.

Learn more about probability here:

https://brainly.com/question/14099682

#SPJ7

Brainliest will be awarded

Answers

Answer:

no solution

Step-by-step explanation:

mark me brainliest

Mark meeee e please

help I don't understand so right answer please

Answers

For the cube do the formula A=6a 2

please help 50 points


Alicia rented bowling shoes for $3 and played 4 games at $2 each. Write and
evaluate an expression for the total cost of bowling.

Answers

3+4=(2) = 3+8 = $11

Please help with this

Answers

Answer:

POG

Step-by-step explanation:

POGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOGPOG

Answer:

8. 8.50 ×4 =34 + taxes 0.06. would be 36.04

9. 1,095. 365×3=1,095

10. 66. 6×11=66

11. 25. 5×5=25

12. 560. 70×8=560

I need to find the area, what is it?

Answers

Answer:

.75

Step-by-step explanation:

You have to do B * H / 2   which 1.5 x 1 = 1.5, and then 1.5/2 = .75

In order to find the area of a triangle, you must do 1/2 base x height.

So to plug in the numbers, you will have 1/2 x 1 x 1.5.

1/2 x 1 = 0.5 and 0.5 x 1.5 = 0.75

Hope this helps! ✨❤️

how does simple
interest show proportional reasoning and
relate to the percent equation?

Answers

Answer:

Use cross product to determine if the two ratios form a proportion. Here we can see that 2/16 and 5/40 are proportions since their cross products are equal. Percent means hundredths or per hundred and is written with the symbol, %. Percent is a ratio were we compare numbers to 100 which means that 1% is 1/100.

Step-by-step explanation:

Simple interest show proportional reasoning and relate to the percentage equation.

Relationship between percentage and proportion:

The relationship between proportion and percentage occurs when a particular proportion gets multiplied by 100 it gives the percentage of parts taken

means,

[tex]\dfrac{\text{Parts}}{Whole}\times 100= \text{Percentage}[/tex]

Similarly,

when a percent gets multiplied by total it gives the number of parts taken means,

[tex]\text{Parts} = \text{percent} \times\text{whole}[/tex]

We can also use cross product to find out if the two ratios form a proportion.

Here we can see that 3/15 and 6/44 are proportions, since their cross products are equal.

Percent means hundredths or per hundred and is written with the signal, %. Percent is a ratio where we compare numbers to 100 which means that 1% is 1/100.

Therefore, simple interest show proportional reasoning and relates to the percentage equation.

Learn More about, simple interest, refer:

https://brainly.com/question/2793278

The vertices of a triangle are listed below:

E(-1, 2), F(-5, -1), G(-1, -4)

What is the area of the triangle?

Answers

I believe it’s 20, hope this helps!

The initial to rent a bike is $5. Each hour the bike is rented costed $2.25. Liz is going to rent a bike and can spend at most $11.75. Write and solve an inequlity to find how long she can rent the bike.

Answers

She can’t rent the bike for 2 hours

Answer:

2 hours.

Step-by-step explanation:

A wallet contains the following coins:

3 quarters
2 dimes
4 nickels
1 penny
What is the probability of randomly selecting a quarter, returning it to the wallet, then selecting a dime? Your answer should be a simplified fraction.

Answers

You have 1/3 of a chance for a quarter
In simplified answer is 1/3

Please help
can u answer this in picture form?

Answers

Answer:

6, -4

Step-by-step explanation:

the answer is 6, -4 the
X axis goes first then the Y access after.
6 was on the X axis -4 was in the Y axis!
(can i get brainliest)

a florist sells a dozen roses for $29.88. what is the cost of 1 rose

Answers

Answer:

$2.49

Step-by-step explanation:

29.88/12=2.49

$2.49 bc 29.88 divided by 12

helppppppppp;pppp]ppp

Answers

Answer:

315 people bought tickets.

Step-by-step explanation:

270 divided by 6 = 45

45 x 7 = 315

Answer:

315 people bought tickets.

explanation:

(there is a formula)

Simplify the expression: 2(5r + 8) - 4

Answers

Answer:

10r + 12

Step-by-step explanation:

:D hiiii im back with another most likely easy questionnnnnnnnnnnnnnnnnnnnnn

Answers

Answer: The answer is 75

20/4=5

5*15=75

It’s 75 because 20/4 is 5 and 15x5 is 75
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