Mathematics High School

If z = 2, find the value of: a. 6z2–2z+5
b. 64–5z

Answers

Answer 1

Answer:

25 and 54

Step-by-step explanation:

(a)

6z² - 2z + 5 ← substitute z = 2

= 6(2)² - 2(2) + 5

= 6(4) - 4 + 5

= 24 - 4 + 5

= 20 + 5

= 25

(b)

64 - 5z ← substitute z = 2

= 64 - 5(2)

= 64 - 10

= 54

Related Questions

Question 3
20 pts
What is the area of the triangle below? (Just put in the number not the unit)
4.5 feet
4.5 feet
13.4 feet
8.8 feet
NO LINKS PLEASE HURRY

Answers

Answer:

14.96 is the area of the triangle

MS. Potts washed 2/3 of her laundry. Her son washed 1/4 of it. Who washed most of the laundry? How much of the laundry still needs to be washed?​

Answers

Answer:

2/5 is greater than 1/4

so ms. potts washed most of the laundry

Find the volume:
Please help ASAP

Answers

Answer:

6,666.67cube units

Step-by-step explanation:

Volume of the square based pyramid = BH/3

B is the base area

H is the height of the pyramid

Base area = Length * length

B = 25 * 25

B = 625 square units

Height = 32units

Volume = 625*32/3

Volume = 6,666.67cube units

Solve the inequality.

Please help.

Answers

Answer:

2 < x <_ 3.5

Step-by-step explanation:

First, find the value of x by writing it as an equation. Then, use 0 as x to determine the correct inequality.

A rectangular patio is 11 feet by 13 feet. What is the length of the diagonal of the patio?

Answers

Answer:

Step-by-step explanation:

use pythagoras

diagonal = [tex]\sqrt{11^{2} + 13^{2} } \\[/tex]

= [tex]\sqrt{290}[/tex]  feet or 17.03 feet

18) Does the graph show a function?

Answers

Answer:

No

Step-by-step explanation:

yes ,graph it shows a function

Determine if the set of points (-1,3), (2,5), (3,8), and (4,5) is a function. Explain.

The set of points is not a function because the range consists of the value 5 two times.

The set of points is a function because each value in the domain corresponds to exactly one value in the range.

The set of points is not a function because each value in the domain corresponds to exactly one value in the range.

The set of points is a function because the range consists of the value five two times. ​

Answers

Answer:(a)

Step-by-step explanation:

A function is a relation between two sets that associates the distinctive components of the first set to the second set distinctive elements.

Points are [tex](-1,3), (2,5), (3,8), (4,5)[/tex]

given points is not a function because each point is not associated with a unique point. for example, 2 and 4 is associated with the same number 5

Based on data collected from various moving companies, a homeowner uses the linear model y=1.5x+150 to predict the total cost of renting a moving truck, y, for x minutes. If the homeowner rents a moving truck for 60 minutes, which statement best describes the slope of the linear model?

Answers

Answer:

The answer is $240

Step-by-step explanation:

You multiply 1.5 times 60 minutes and get 90, you then add 150 and 90 and you get 240.

In the diagram AB IBC . Find the value of x.

Answers

Step-by-step explanation:

3x-6+x+90°=180°

4x+84=180

4x=96°

x=96/4

x=24°

What is this formula?PLEASE ANSWER THIS QUESTION RIGHT.

Answers

Answer:

Quadratic formula

Step-by-step explanation:

You can use the quadratic formula to find solutions for quadratic equations.

Ben is 12 years older than Ishaan. Ben and Ishaan first met two years ago. Three years ago, Ben was 4 times as
old as Ishaan.
How old is Ishaan now?

Answers

Answer:

Ishaan is now 6.

Step-by-step explanation:

If Ben is 12 years older, and you have the info that three years ago, he was 4 times as old, then all you have to do is divide 12 by 4, giving you 3. You add 3 to that because it's been three years. You have your answer of 6.

Hope this helps! :)

Name the figure shown.

Answers

It looks like a scalene triangle but i’m not so sure

Sorry if it is blurry but can you give me the answer plsss

Answers

B. 21 mmmmmmmmmmmmmmmmmmmmmmmm

Answer:

A) 7

Step-by-step explanation:

25% = 0.25

28 x 0.25 = 7

EXTRA POINTS-- find the value of x and the measure of each angle

Answers

Answer:

x= 25

3x-4=71

2x+3=53

2x+6=56

Step-by-step explanation:

help asap!
Find the probability of at least one failure in five trials of a binomial experiment in which the probability of success is 30%. Round to the nearest tenth of a percent.

Answers

0.15 is your answer

A scuba diver starts her dive at an elevation of 0 feet. If her elevation changes by 40 1/2
feet per minute, what will be her elevation after 3 minutes?

Answers

Answer:

121.5

Step-by-step explanation:

40.5*3=121.5

SIMPLIFICAR 36/144 POR FAVOR PLISSS

Answers

Answer:

Divide both the numerator and denominator by the GCD

36 ÷ 36

144 ÷ 36

Reduced fraction:  

1/4

Therefore, 36/144 simplified to lowest terms is 1/4.

solve: x + 1 < 5
Me confused and need help ​

Answers

Answer: x < 4

Step-by-step explanation: You are trying to isolate the variable, x, so you have to subtract 1 on both sides of the inequality. Then, you are left with x < 4.

Sam purchased a laptop at $800 each year the laptop will lose 12% of its value each year what would it be the approximate value of Sam's laptop after 7 years​

Answers

Answer:

$326.94

Step-by-step explanation:

For this equation you are going to do a exponential function, since we are working with percents. To do this you will make the equation

(starting price)x(1-percent)^(t) t=years

which will create the equation

800(0.88)^t

You will then plug in t=7

800(0.88)^7 =

800(0.409) =

326.94 (you will cut it off at the hundredth position because it is working with money)

please just help please

Answers

Answer:

1. Yes the parentheses are necessary. To find a fourth of her regular hours you must find the total amount she works during her regular hours.

2. 6

Step-by-step explanation:

(For the second question)

4+8= 12

12 × ½ = 12 ÷ 2

12÷2 = 6

PLEASE HELP!!! PICTURE INCLUDED please look at it!!! ILL MARK U BRAINLIEST IF U GET IT RIGHT!!!

Answers

Answer:

73 % for the right square, 173% if you need to add both squares together

Step-by-step explanation:

each block is 10, and whole is equal to 100%

Solve the system using the Substitution Method.

3x+5y=-1

x+2y=-1

Group of answer choices

Answers

Answer:

(-7, 4)

Step-by-step explanation:

I checked on photomath

Graph #1 (on the left):
Select]
e
Graph #2 (on the right) [Select ]
Someone answer quickly

Answers

Graph one is continuous
Graph two is discrete

Solve the equation.
4x = -28
x=_____

Answers

I think x= -7 because 4x7=28

Question 3 plzzz thanks u

Answers

Answer:

the pic is blank we can't see

Step-by-step explanation:

My guess would be 1 and 10

what is the answer for 5 × [(8 + 2) − (16 − 9)]

Answers

Answer: do PEMDAS and the answer should be 17 I’m not 100%

Step-by-step explanation:

I NEED HELP ASP. IT IS SO HARD

Answers

Answer:

i think caiden will make it

Step-by-step explanation:

Explain how you
use a net to find the surface area of a
prism.

Answers

Step-by-step explanation:

To find the total surface area of a prism, you need to calculate the area of two polygonal bases, i.e., the top face and bottom face. And then calculate the area of lateral faces connecting the bases. Add up the area of the two bases and the area of the lateral faces to get the total surface area of a prism.

Hope this helps!

All the love, Ya boi Fraser :)

Answer:

By drawing a net, you can see each face of the prism. You can find the areas of each face and then add them together to find the total surface area.

YW :3

How would you calculate the area of the quarter circle represented in the upper left hand corner of this figure?

(see pictures for answer options)

Answers

Answer:

Step-by-step explanation:

To find the area of a quarter circle, find the area of the whole circle by using the formula A = pi * r^2 and then divide by 4. To find the perimeter of the quarter circle, find the circumference of the whole circle, divide by 4, and then add the radius twice.

Answer: [tex]\frac{\pi *r^{2} }{4}[/tex]

Step-by-step explanation:  We know that the formula for the area of a whole circle is πr². A quarter circle is one-fourth of a circle, so if we divide the area of the whole circle into four, we can find the area of the quarter circle: [tex]\frac{\pi *r^{2} }{4}[/tex]

A small jar of coins has 20 dimes and 8 nickels. A large jar has the same ratio of dimes to nickels. If the large jar has 36 nickels, how many dimes does it contain?​

Answers

Answer: 90

Step-by-step explanation:

20/8 = x/ 36

20 * 36 = 720 divided by 8= 90

Other Questions
Solve for x and y. *103060YO x = 10 and y = 1003O x = 10V3 and y = 20O x = 20 and y = 10V2O x = 10V2 and y = 10 In the 1800s, the United States was still a very young nation, trying to solidify its identity. The Industrial Revolution began in Great Britain, a fast development of society following the introduction of machines. The United States was slower than Great Britain to fully embrace the changes. Yet key technological developments caused a rapid growth in American urban areas.Better farming methods and tools in the 1800s increased food production. Americans were able to grow enough food for their families as well as to sell. The abundance caused food prices to fall.The expansion of cotton and the growth of textile factories in northern states helped produce the first wave of American industry. More people turned to work in northern factories as a way to support their families. Thousands of immigrants to the United States also settled in or near port cities, looking for work. Even today, the need for work is a common reason people move to urban areas.As a result, cities grew in numbers of people and physical space. As more people and businesses moved in, they needed buildings for living and working. They needed ways to move around the city. We call this process urbanization.In 1820, the United States had only a few cities of 10,000 residents or more. About seven percent of U.S. residents lived in urban areas. The number of cities with more than 10,000 people grew quickly over the next 40 years, especially in the Northeast and Midwest. By 1860, about 20 percent lived in cities. Philadelphia and New York City were the most populated cities in 1860 and would soon reach one million residents.The urbanization of the United States quickened due to technology improvements. Without innovations in food production, the factories could not have grown so quickly. The trend quickened after 1860 and continued throughout the 21st century as well. By 2007, more Americans lived in or near cities than they did in rural areas.Which details are used to support the main fact in the fifth paragraph? (5 points)Data about population changesReasons why people moveExplanation of urbanizationMentions of Great Britain The Butler Act a. Was the first step toward ending prohibition. b. Challenged the authority of teachers to establish curriculum. c. Was broadly supported by scientists. d. Provided land for immigrants who wanted to become farmers. e. Was hostile to Christian fundamentalist beliefs. Whats the literary device"Nineteen sixty-three is not an end, but a beginning." "I Have a Dream" by MLK, Jr. In HIJ, the measure of J=90, HI = 65 feet, and IJ = 31 feet. Find the measure ofH to the nearest tenth of a degree. What is the solution to the system x+y=10 3y=-3x+30PLEASE helpppp Can you please help me Can anybody help me solve this Why did women go to work in the Lowell Mills? Need help asp Here are the lowest temperatures recorded in the last 2 centuries for some US cities. Death Valley, CA was -45 in January of 1937.Danbury, CT was -37 in February of 1943.Monticello, FL was -2 in February of 1899.East Saint Louis, IL was -36 in January of 1999.Greenville, GA was -17 in January of 1940.How many more degrees colder is the record temperature for GA than for FL?A. 19B. -17C. -35D. 15 **Brainiest if correct**Explain the differences between the two statements below, discussing the types of information that they are providing to the reader.Statement 1: According to Dr. Lense, Contact lenses allow you to see more naturally. They move with your eye and do not fog up like glasses do.Statement 2: Glasses come in different types: single-vision, bifocals, trifocals, and progressive lenses.P.S. My computer can't download/visit links, so please keep that out of your answer Please help! I need this fast Rhett decides to build a square room for his movie and music collection. If the area of the room is 4x2 + 28x + 49 square feet, what is the length of one side of the room? (7x + 2) feet (2x + 7) feet (2x 7) feet (7x 2) feet c: my discord Strippp4ashhhh#5889 7.The material that is easiest to recycle is___glassplasticaluminumpaper WILL GIVE BRAINLIEST!The Ride for Health Bicycle Club has chosen a 36-mile course for this Saturday's ride. If the riders plan on averaging 12 mph while they are riding, and they have a 1-hour lunch break planned, how long will it take them to complete the trip? hr there's the question :)) Which condition is also known as black lung disease? (A) pneumanosis (B) silicosis (C) Obysinosis (D) anthracosisPlz help me For 8 days, Teresa put $3 into her savings account each day. Her parents also added a certain amount ofmoney to the account each day. In the end, there was a total of $88 in the account. How much moneydid Teresa's parents add each day?please help! :) Which expression is equivalent to 8-(6r+2)?-6r+62r+26r+10-6r+10please answer with the correct answer Write the equation of the absolute value function y = 3|x| translated right 8 units and up 1 unit.