what is alergbra about and why ?

Answers

Answer 1

Answer:

Simply put, algebra is about finding the unknown or putting real life variables into equations and then solving them. ... Algebra can include real numbers, complex numbers, matrices, vectors, and many more forms of mathematic representation

Step-by-step explanation:


Related Questions

I need help with showing my work on converting 3 7/8​

Answers

Hi :)

The answer is 31/8

3 is a whole number, right?

So we do:

8/8 + 8/8 + 8/8 + 7/8

We have 8/8 three times cuz we have 3 as the *whole* number

= 8 + 8 + 8 + 7= 31
Add the denominator = 31/8

Hope this helps :)

The attendance for a basketball team declined at a rate of 5% per game throughout a losing
season. 23,500 people attended the first game. How many people attended the 8th game?
Equation:
Answer:

Answers

Answer:

y=23,500

Step-by-step explanation:

General form for an exponential equation

                            y = ab^{x - h} + k y=ab

                             or

                             y = ab^x y=ab  

Exponential growth and decay, when the quantity increases by a fixed percentage at regular intervals.

                     Exponential growth  y = a(1 + r)^x y=a(1+r)

               \because b = (1 + r) ∵b=(1+r)

   

                     Exponential decay  y = a(1 - r)^x y=a(1−r)

x

                 \because b = (1 - r) ∵b=(1−r)

                       Where, a - initial value

                                   r - decay or growth rate

                                   x - Number of time intervals that have passed

Step 2: Set up an exponential equation from the given in formation

             Given that:

             Declined(Decay) rate r = 5% = 0.05

            Players from the first game a = 23,500

             Exponential decay  y = a(1 - r)^x y=a(1−r)

x

       

                                           y=23,500(1-0.05)^xy=23,500(1−0.05)

x

                                           y=23,500(0.95)^xy=23,500(0.95)

x

                                           

Step 3: Build a table of values by evaluating the function at different x-values.

                                       y=23,500(0.95)^xy=23,500(0.95)

                                 

                 If x = 0 then  y = 23,500(0.95)^x y=23,500(0.95)

                                      y = 23,500(0.95)^0 y=23,500(0.95)

                                      y = 23,500 * 1 y=23,500∗1

                                       y=23,500

Use the diagram of ABCD to find x.

Answers

Answer:

x = 5

Step-by-step explanation:

AB = CD, so x + 2 = 2x - 3

2 + 3 = 2x - x

x = 5

Which of the following are true statements? Check all that apply.

Answers

Answer:

A and C are correct

Step-by-step explanation:

We have to select the true statements from the given four statements in options.

I think the statements A and C are true from the mathematical point of view.

If the original function is and then by reflecting it about the x-axis the equation will become , and then shrinking it vertically by a factor of the function will finally become .

Hence, statement A is true.

Again, the original function has domain x ≥ 0 and range y ≥ 0, but in the transformed equation has domain same as original equation i.e. x ≥ 0 but the range is different i.e. y ≤ 0.

Hence, statement C is also true. (Answer)

100 POINTS
The graph of f ′ (x), the derivative of f(x), is continuous for all x and consists of five line segments as shown below. Given f (0) = 6, find the absolute maximum value of f (x) over the interval [0, 5].

graph of line segments increasing from x equals negative 4 to x equals negative 3, decreasing from x equals negative 3 to x equals 0, increasing from x equals 0 to x equals 3, constant from x equals 2 to x equals 4 and decreases from x equals 4 to x equals 5. x intercepts at x equals negative 4, x equals 0, x equals 5

2
8
11
13

Answers

The graph of f'(x) is given, so if you find the area under the graph, that will be the value of f(x). Calculate the area of the shape under the graph from x values 0 to 4. This shape should look like a trapezoid. The area you find is actually the change in f(x) from 0 to 4. You will need to add that area to the initial value the problem gave you: f(0)=7.

Area of a trapezoid = h(b2+b2)/2
Height of the trapezoid = 2
Base 1= 2
Base 2 = 4
Area of trapezoid from [0,4] = 6

Initial value: f(0)=7

Absolute Maximum F(x): 6 + 7 = 13

Larissa had 25 feet of ribbon. She equally divided
all the ribbon to make 8 bows for gift boxes. How
many feet of ribbon were used for each bow?

Answers

Answer:

3 feet of ribbon

Step-by-step explanation:

Simply divide 25 by 8. Then you get 3 feet with a remainder of 1.

Flora's Flower Shop is gearing up for Valentine's Day, which is typically their busiest time of the year. Flora was able to secure 9,000 red roses for the holiday this year. Flora sells red roses for $8 per stem, and bouquets of 12 red roses for $75. The cost per stem for Flora is $3. Typically half of all flowers are sold as individual stems and half as bouquets, however on Valentine's Day the majority of flowers are sold as part of bouquets. Last year Flora made $35,000 over the Valentine's Day holiday, and hopes to make the same profit this year. What is the maximum proportion of flower sales that can come from bouquets in order for Flora to earn a profit of $35,000. 42% O 50% 63% 81%​

Answers

The maximum proportion of flower sales that can come from bouquets in order for Flora to earn a profit of $35,000 is A. 42%.

What is proportion?

The proportion shows the ratios of two or more variables.

While the maximum proportion show the highest ratio or percentage of a variable required to equate an expression.

Data and Calculations:

Number of red roses procured for sale = 9,000

Selling price per stem = $8

Selling price per bouquet (12 stems) = $75

Cost per stem = $3

Last year's Valentine Day profit = $35,000

                                                      Stem       Boutique

Selling price                                    $8             $75

Cost per stem                                   3               36 ($3 x 12)

Contribution margin per unit         $5            $39 ($75 - $36)

Contribution margin per stem       $5            $3.25 ($39/12)

Weighted contribution margin  $22,500  $14,625 ($3.25 x 4,500)

Proportion                                                       42% ($14,625/$35,000 x 100)

Thus, the maximum proportion of flower sales that can come from bouquets in order for Flora to earn a profit of $35,000 is A. 42%.

Learn more about proportions and ratios at https://brainly.com/question/12024093

Is this right I just need confirmation pls

Answers

Answer:

No

Step-by-step explanation:

The slope is -4/3, so it should start at y=8, then go down 4 and over (to the right) 3 units. So the next point would be (4, 3).

Airlines have increasingly outsourced the maintenance of their planes to other companies. A concern voiced by critics is that the maintenance may be less carefully done so that outsourcing creates a safety hazard. In addition, flight delays are often due to maintenance problems, so one might look at government data on percent of major maintenance outsourced and percent of flight delays blamed on the airline to determine if these concerns are justified. This was done, and data from 2005 and 2006 appeared to justify the concerns of the critics. Do more recent data still support the concerns of the critics? Here are data from 2014:

Alaska 51.051.0 10.3510.35 Jet Blue 68.468.4 19.9319.93
American 29.429.4 20.3220.32 Southwest 58.258.2 28.4728.47
Delta 36.736.7 14.4814.48 United 52.652.6 23.4623.46
Frontier 46.346.3 21.4221.42 US Airways 54.354.3 13.6813.68
Hawaiian 78.478.4 5.065.06

Required:
a. Make a scatterplot with outsourcing percent as xx and delay percent as y.
b. Find the correlation r with and without Hawaiian Airlines.

Answers

Answer:

Please check attachment for graph

Step-by-step explanation:

B. With hawaii airline = -0.300

Without hawaii airline = 0.197

With hawaii airline

EX = 475.3

EY = 157.17

XY = 8042.11

X² = 26883.55

Y² = 3159.375

The correlation coefficient

= 72378.99-74702.9/7737.421

= -2323.91/7737.421

= -0.300

Without hawaii airline

EX = 396.9

EY = 152.11

EXY = 7645.406

X² = 20736.99

Y² = 3133.772

= 790.789/4021.161

= 0.197

the lest than and greater than is similar off math ​

Answers

Answer:

?

Step-by-step explanation:

uhhh less than is x < y greater than is x > y

can you please provide more info!

Catherine has to run a few errands. She started her errands at 11:35 am. She first went to the bank for 20 minutes. Then she shopped at the grocery store for 1 hour and 15 minutes. Last she went to the gas station for 15 minutes. When was Catherine finished with her errands

Answers

Answer:

1:25 pm

Step-by-step explanation:

20 minutes after 11:35 am would be 11:55 am, 1 hour and 15 minutes after 11:55 am would be 1:10 pm, and 15 minutes after 1:10 pm would be 1:25 pm.

Jodha wants to tip the pizza delivery person 20%. If the cost of the pizzas is $15.99, what would be a reasonable amount to tip?

Answers

Answer:

$3.20

Step-by-step explanation:

20%-> .20

15.99*.20

Answer:

$3.20

Step-by-step explanation:

divide 15.99 by 100

[tex]\frac{15.99}{100}[/tex]=0.1599

you now have 1%of the cost

multiply by 20 to get 20%

0.1599*20=3.198

round to 2 decimal places to get the amount he will tip

3.20

It takes 6 painters 4 half and hour to paint these classroom.

Is this direct or indirect proportion?
Give a reason for your answer

Answers

Answer:

Direct proportion

Step-by-step explanation:

In direct proportion, if one quantity is increased or decreased then the other quantity increases or decreases, respectively

Find the value of x and y. If necessary, round your answer to the nearest tenth. *

Answers

Answer:

Step-by-step explanation:

"y" is geometric mean ⇒ y² = 5 × 12

y = √60 ≈ 7.7

x² = 5² + ( √60 )²

x = √85 ≈ 9.2

Photo question to ask

Answers

Answer:

$205,625

Step-by-step explanation:

Total is x, so

16% * x = 32,900

x = 32,900/0.16 = 205,625

PLEASE HELP FIND THE AREA!
its pretty easy

Answers

Answer:

114 square meters

Step-by-step explanation:

I hope this helps! Have a lovely day!! :)

how to solve this w2-64= by facturing​

Answers

Answer: (x+8)(x-8)

Step-by-step explanation:

hope this helped :)

Write an addition, a multiplication, and a division statement with the
same answer

Answers

Answer:

5 x 5 = 25

20 + 5 = 25

50 ÷ 2 = 25

Step-by-step explanation:

What is the answer ?
x/y+17
If is x=12
and y=1/2

Answers

Answer:

jhhdh.duuemmeyyeymruur*

12/ 1/2 +17 = 24 +17= 41

What are 2 equivalent ratios for 7:4​

Answers

Answer:

14:8 and 21:12

Step-by-step explanation:

Equivalent fractions are fractions that look different but hold the same value. In this case, 7:4 = 14:8 = 21:12

Answer:

14:8, 28:16

Step-by-step explanation:

This could be anything. Ratios are like fractions; as long as you make changes to both sides, it will equal the same thing. So for the two examples I put, I simply multiplied both sides by 2 for the first one, and 4 for the second one.

But, you could multiply it by whatever you want, even negative numbers and fractions. However, I wouldn't try to complicate it, if the question didn't ask me to. Just keep to the easiest equivalents to make your life easier.

Hope this helps :))

Which graph represents the equation y = 1/3x +2

Answers

Answer:

No graph attached, but it would look like;

The y intercept (the line which meets the y axis) would be at positive 2,

it would then rise one and go over 3 to the right because they are both positive.

Whichever one has a point at (0,2) and at (3,3)

A grocery store bought yogurt for $2.20 per container and stored it in two refrigerators. During the night, one refrigerator malfunctioned and ruined 13 containers. If the remaining yogurt is sold for $3.94 per container, how many containers did the store buy if they made a profit of $105.38?

Answers

Answer:

96

Step-by-step explanation:

X be the total containers bought

Sales - cost = profit

4.08(X - 14) - 2.6X = 84.96

4.08X - 2.6X - 57.12 = 84.96

1.48X = 142.08

X = 96

Please help I'll mark this as brainliest ​

Answers

Answer:

13/50

Step-by-step explanation:

26% of 100 is 26/100 as a fraction.

These can both be divided by 2.

Once you divide both by two you end up with 13/50.

Answer:

26 green marbles

Step-by-step explanation:

There are 100 marbles in the jar.

100 marbles are 100%

26% of these marbles are green.

Just as there are 100 marbles, we need to find how many marbles are green.

Let us do it like that: let a be the actual number of green marbles.

Marbles           Percent

100                    100%

a                         26%

Let's find the ratio between 100% and 26% by doing 100/26 = 3.846153

We need to multiply 26 by 3.846153 in order to get to 100, right?

So same, I'll need to multiply a times 3.846153 in order to get 100.

3.846153 a = 100

divide both sides by 3.846153

a = 26 marbles

Therefore there are 26 green marbles.

Tell me if it helps you.

Distributive property of 9 times 28

Answers

9x20 +9x8

OR

9x(20+8)

A window has an actual height of 4.5 feet. If a blueprint has a scale of 3 inches = 2 feet, find the height of the window in the blueprint. Select one: 9 inches O 7.5 inches O 9.5 inches O 6.75 inches​

Answers

2 feet: 3 inches

1 feet: 3/2 inches

4*5 feet: 3x4*5/2

=6.75 Inchea

im confused on this, anyone have an idea what they mean?

Answers

Answer:

This looks like the perimeter formula for a rectangle :)

Step-by-step explanation:

I could be wrong but i hope this helps

Which formula gives the trade discount when the list price and single discount rate are​ given?
Question content area bottom
Part 1
A.
list price times single discount rate
B.
net price times single discount rate
C.
base equals portion times rate
D.
trade discount times single discount rate

Answers

Answer:

I believe it's

Step-by-step explanation:

A

however I could be wrong

a man purchased a used car for $1000. He decided to sell the car for 20% above his purchase price. He could not sell the car so he reduced his asking price by 20%. If he sells the car at the reduced price, will he have a profit or a loss or will he break even?​

Answers

Answer:

ok so they purchased price of the car is $1000 and the asking price will be 20% of $1000 so $1000 is a 100% so to get 20% of $1000 it will be 100% + 20% to get 120 percent so the asking price is 120 per cent of $1000 so 120 percent of $1000 is equals to 1200 dollars then you are told that he could not sell it by that price so he reduced it by 20% so this $1200 is 100% so he reduced it by 20% so it will be 100% - 20% to get 80% so this person sold his car at 80% so we will get 80% of $1200 and we will get $960 so he made a loss of $40

Purchase price = 1000
20% above 1000 = 200, 1000 + 200 = 1200
20% below 1200 = 240, 1200 - 240 = 960

1000 - 960 = $40 loss

1. A point is a position, true or false​

Answers

true true true true true true true

can I get help with this equation?(2√5-√6)(4√5-3√6)​

Answers

Answer:

=58 - 10 (lil check thing) 30

Step-by-step explanation:

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