A book has 244 pages. Theo has read 81 pages so far. About what percent
of the book has Theo read?

A. 82%
B. 66%
C. 50%
D. 33%

Answer:

D

Step-by-step explanation:

if to substitute values of n=1;2;3;4;5 into

[tex]a_n=n^2-5[/tex]

then a₁=-4; a₂=-1; a₃=4; a₄=11; a₅=20.

It means the answer {-4, -1, 4, 11, 20,...} is correct.

How to solve your problem:

2a+13−0+65b

Simplify:

1. Add the numbers -

2a+13+0+65b = 2a+13+65b

2. Rearrange terms

2a+13+65b = 2a+65b+13

Solution: 2a+65b+13

The answer is B.

Answer:

Algebra (from Arabic: الجبر‎ al-jabr, meaning "reunion of broken parts"[1] and "bonesetting"[2]) is one of the broad parts of mathematics, together with number theory, geometry and analysis. In its most general form, algebra is the study of mathematical symbols and the rules for manipulating these symbols;[3] it is a unifying thread of almost all of mathematics.[4] It includes everything from elementary equation solving to the study of abstractions such as groups, rings, and fields. The more basic parts of algebra are called elementary algebra; the more abstract parts are called abstract algebra or modern algebra. Elementary algebra is generally considered to be essential for any study of mathematics, science, or engineering, as well as such applications as medicine and economics. Abstract algebra is a major area in advanced mathematics, studied primarily by professional mathematicians.

Elementary algebra differs from arithmetic in the use of abstractions, such as using letters to stand for numbers that are either unknown or allowed to take on many values.[5] For example, in {\displaystyle x+2=5}x+2=5 the letter {\displaystyle x}x is an unknown, but applying additive inverses can reveal its value: {\displaystyle x=3}x=3. In E = mc2, the letters {\displaystyle E}E and {\displaystyle m}m are variables, and the letter {\displaystyle c}c is a constant, the speed of light in a vacuum. Algebra gives methods for writing formulas and solving equations that are much clearer and easier than the older method of writing everything out in words.

The word algebra is also used in certain specialized ways. A special kind of mathematical object in abstract algebra is called an "algebra", and the word is used, for example, in the phrases linear algebra and algebraic topology.

A mathematician who does research in algebra is called an algebraist.

Answer:

D. cmdjjcmcjdkxjjskxkxmjxjxkxjmxjddkkxxkxjjsikskkkxksk

Answer:

B. Range C. Dependent Variable F. Output

Step-by-step explanation:

Answer: 3 consecutive integers

x = 1st integer (country A)

x + 1 = 2nd integer (country B)

x + 2 = 3rd integer (country C)

whose sum is 114

x + (x + 1) + (x + 2) = 114...combine like terms

3x + 3 = 114

3x = 114 - 3

3x = 111

x = 111/3

x = 37 <== country A

x + 1 = 37 + 1 = 38 <==country B

x + 2 = 37 + 2 = 39 <== country C

Step-by-step explanation:

Answer:

29, 30, 31

Step-by-step explanation:

(x) + (x+1) + (x + 2) = 90

3x + 3 = 90

x = 29

(29) + (30) + (31) = 90

Answer:

As the givens set μ has 24 elements.

Therefore,

Step-by-step explanation:

Given

μ = {x: x is a positive counting number less 25}

The set of natural numbers is often termed as the Counting number set.

As the counting numbers are less than 25.

Thus, the set μ is:

μ = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24}

We know that cardinality of the set is the number of elements in a given set.

As the givens set μ has 24 elements.

Therefore,

The given question is incomplete. The complete question is:

A force of 90 Newton's is applied to a [tex]20cm^2[/tex] surface. The force applied is then increased by 5 Newton's and the surface is increased by [tex]5cm^2[/tex]. What percentage does the outcome decrease by

Answer: The outcome decreases by 15.5 %

Step-by-step explanation:

Pressure is defined as the ratio of force per unit area.

[tex]Pressure=\frac{Force}{Area}[/tex]

Case 1: [tex]P_1=\frac{90N}{20cm^2}=4.5Ncm^{-2}[/tex]

Case 2: [tex]P_2=\frac{95N}{25cm^2}=3.8Ncm^{-2}[/tex]

Decrease in pressure = [tex]P_1-P_2[/tex] = [tex](4.5-3.8) Ncm^{-2}=0.7Ncm^{-2}[/tex]

Percentage decrease = [tex]\frac{0.7}{4.5}\times 100\%=15.5\%[/tex]

Thus the outcome decreases by 15.5 %

Answer: 2.2876792e+13

Step-by-step explanation: calculator

Answer:

d = 50h

d = distance traveled

h = hours

Step-by-step explanation:

Answer:

25 3/5

Step-by-step explanation:

i think

Answer:

7/2+35/4+89/12+6/5=210+525+445+72/60=1252/60=313/15

Step-by-step explanation:

Answer:

1:4

Step-by-step explanation:

Convert 8 pints into cups which we can do this by 8x2=16 we can do this because 1 pint=2 cups. So know we have 4:16 which we can simplify to 1:4

Hope this helps :)

Answer:

The equation does not have any real solutions.

The equation only has two imaginary solutions.

Step-by-step explanation:

Step 1

[tex] \large{D = {b}^{2} - 4ac}[/tex]

Let a = 1, b = 1 and c = 3 from the given equation.

[tex]D = {(1)}^{2} - 4(1)(3) \\ D = 1 - 12 \\ D = - 11[/tex]

Since the value of D is in negative. Therefore, the equation does not have any solutions.

Discriminant

[tex]D > 0 \longrightarrow \sf{two \: \: real \: \: solutions} \\ D = 0 \longrightarrow \sf{one \: \: real \: \: solution} \\ D < 0 \longrightarrow \sf{two \: \: imaginary \: \: solutions} [/tex]

Step-by-step explanation:

first we will take comman then

[tex] \frac{4}{5} - \frac{2 \times 5}{5} [/tex]

then 4 - 10

it will be

[tex] \frac{6}{5} [/tex]

or

[tex]1 \frac{1}{5} [/tex]

i hope it will help

Answer:

Solution is [tex]\frac{-6}{5}[/tex]

Step-by-step explanation:

[tex]\frac{4}{5} - 2[/tex]

Set common denominators

[tex]\frac{4}{5} - \frac{10}{5}[/tex]

Subtract

[tex]\frac{4}{5} - \frac{10}{5} = \frac{-6}{5}[/tex]

Answer:

D

Step-by-step explanation:

just took that test

Answer:

A

Step-by-step explanation:

:))

Answer:

y=63

Step-by-step explanation:

Start off by adding 13 to both sides:

1/3y-13=8

     +13 +13

Now you have this:

1/3y=21

Now multiply each side by 3/1 (3) to get your answer:

(3) 1/3y=21 (3)

Y=63

Check your answer:

63/3=21 21-13=8

I hope this helps, and have a great day! <3 :)

Answer: -pi/4 and 3pi/4

Step-by-step explanation:

Whenever you're given an inverse trig function like this, think "tangent of what gives me -1?" There are multiple ways in which you can solve this; knowing how tangent work, guess checking sin/cos to get -1, or using a calculator. The only way tangent can be an integer is if the sine and cosine of the angle are equal.

The only spots on the pi circle where this happens is pi/4, 3pi/4, 5pi/4, and 7pi/4. Answers B and D are correct

Answer:

b

Step-by-step explanation:

just did it on edg 2020

Answer: 1

Step-by-step explanation:

[tex](0.1)(9.8)+2(0.1)^2\\0.98+0.02=1[/tex]

Answer:

10

Step-by-step explanation:

10 squared is 100

Answer:

8-3i

Step-by-step explanation:

additive inverse of a+bi is -(a+bi)

so -(-8+3i) -- distribute negative through ()

8-3i

Answer:

Step-by-step explanation:

Given expression:

Simplify:

Correct choice is D

Answer:

D. 126y²

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

Jeremiah bought x toy sets for $20 each and then a video game for $60. Jeremiah spent a total of $220. How may toy sets did he buy?

To find our answer, we can solve the equation:

20x + 60 = 220

        -60    -60

20x = 160

/20    /20

x = 8

Jeremiah bought 8 toy sets!

I hope this helps :)

Answer:

x² - x + 4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

(6x² - 10x + 9) + (-5x² + 9x - 5)

Step 2: Simplify