Combine like terms: 4-4z+5z-2+2z then solve

Answer:

3z+2

Step-by-step explanation:

Answer:

2 + 3z

Step-by-step explanation:

4 - 4z + 5z - 2 + 2z

4 - 2 = 2

-4z + 5z + 2z = 3z

= 2 + 3z

We don't know what 'z' is, so that is the most that I can simplify it.

4 - 4z + 5z - 2 + 2z

= (4) + (-4z) + (5z) + (-2) + (2z)

PLS HELP: GCSE QUESTION!!!

(see image)

Noah bought stock in a company two years ago that was worth x dollars. During the first year that he owned the stock, it increased by 31%. During the second year the value of the stock increased by 15%. Write an expression in terms of x that represents the value of the stock after the two years have passed.

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What happens to the mode of the data set shown below if the number 16 is added to the data set?



A. The mode is increased by 1.
B. The mode does not change.
C. The mode is increased by 2.
D. The mode is increased by 7.

can someone help plz

Jan has a kids pool that holds 20 gallons of water. It drains as a constant rate. When Jan first saw the kids pool, it contained 14 gallons. Six minutes later, the pool contained 10 gallons of water. At what rate is the amount of water in the pool changing? Use a signed number, and include the unit of measurement in your answer.

1. In a comparison taste test of two juice drinks, 780 people preferred

Cranberry Blast. Only 220 people preferred Melon Splash. Complete

each statement.

a. There were more people who preferred Cranberry Blast.

b. In the taste test, () of the people preferred Cranberry Blast.

c. People who preferred Cranberry Blast outnumbered those who

preferred Melon Splash by a ratio of () to ().


Students at a middle school are asked to record how they spend their

time from midnight on Friday to midnight on Sunday. Carlos records

his data on his phone. Use his phone sereen for Exercises 4-7.


Decide whether each statement is an accurate description of how

Carlos spent his time that weekend. Explain your reasoning. Please refer to the smartphone image. ()

————

Carlos spent one-sixth of his time watching television. ()

————

The ratio of hours spent watching television to hours spent doing

chores or homework was 3 to 1. ()

————

Sports, Internet, and watching television took about 33% of

his time. ()

————

Time spent doing homework was only 20% of the time spent

watching television. ()

————

Sleeping, eating, and "other" activities took up 12 hours more

than all other activities combined. ()

————

A class at Middlebury Middle School collected data on the types of

movies students prefer. Complete each statement using the table.

Types of Movies Preferred by Middlebury Students

Action- 75,90

Comedy-105,150

Total-180,240


The ratio of seventh-graders who prefer comedies to

eighth-graders who prefer comedies is () to ().


b. The fraction of total students (both seventh-and eighth-graders)

who prefer action movies is ().

C. The fraction of seventh-graders who prefer action movies is ()


The sketches betow show two members of the Grump family. The

Crumps are geometrically similar. Use the figures in exercises 33- 36.

Grump A- 0.8 in.

Grump B-1.2 in.

33. Write statements comparing the lengths of corresponding segments

in the Grumps. Use each concept at least once.

a. ratio

b. fraction

c. scale factor



Suppose a news story reports "A survey found that

of all Americans watched the Super Bowl on television." Bishnu thinks this means the survey reached seven people and four of them watched the Super Bowl on television. Do you agree with him? If not, what does the
Statement mean? ()

You collect $20.92 for selling 4 video games and 2 cellphones on a website. Your friend collects $23.44 for selling 4 video games and 3 cellphones on the website. How much do you collect for each video game?

plsplsplsplspsplsplsplsplsplsplspslpslpls

Mr. boyd spent too much time on his speech and was late for the prom. He needs to be at the prom at 17:15 to help with the preparations. If he lives 20 km away and he leaves home at 16:40, what speed should he drive to get there on time. Allow him to park for 10 minutes and walk. Round your answer to the nearest kilometers per hour.

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Which measure of center would you use to describe a data set with no extreme values and no big gaps?

Charlie bought pound of American cheese and pound of Swiss cheese. Josh bought pound of cheddar cheese and pound of jack cheese. Josh says that they bought the same amount of cheese. Is he correct? Explain.

Kristen wants to ask the managers of the fast food restaurants in a large city "How do you retain employees?" What condition must be true to justify surveying only a sample of the managers instead of surveying the entire population of managers?

The population is small.

The population is diverse.

The population is not the target of the survey question.

The population is expensive and time-consuming to survey.​

Help me please you don't need to show your work

Please answer all of them and please look at the screenshots, I really need help.

A. 7 ft

B. 8 ft

C. 49 ft

D. 576 ft

you are interested in buying some land. The rectangular plot measures 4.2 miles by 2.6 miles. What is the area of the plot of land?

Hazel is putting together charm bracelets. For each bracelet 1/5 of a yard of string and 12 charms. hazel has 5/8 of a yard of string and 96 charms. she makes the charm bracelet until all of the string is gone. what fraction of charms did she use?

How many solutions does 4(2x – 5) = 4 have?

Lin has a small baking pans shaped like a rectangular prism.

Lin’s pan has a length of 2 2/3 inches, a width of 3 3/4 inches, and a height of 1 1/2 inches.

What is the volume of this pan?



[ type number AND unit]

A tree initially measured 27 1/2 feet tall. Over the next 3 1/2 years, it grew to a final height of 35 1/2 feet. During those 3 1/2 years, what was average yearly growth rate of the height of the tree

A.) 2 1/7 feet/year
B.) 2 2/7 feet/year
C.) 2 4/7 feet/year
D.) 2 6/7 feet/year

Over the last week, the daily low temperatures in degrees Fahrenheit have been −4,6.4, 17 1/2, −5.8, 21, − 1/4, and 1.45. List these numbers in order from greatest to least.

J u l i a n has partially filled the prism below with 16 unit cubes.

How many more unit cubes will he need to completely fill the prism?
11
20
25
36

Help? : to answer this question click the answer and you will see the image

When yeast is combined with flour and other ingredients to make pizza dough is a _____.

Chemical or physical, please dont guess.

find rate of change AND initial value