Mathematics Middle School

if 29 cos 0=21 find the value of 1/sin0-tan0..

Answers

Answer 1

It should be 21 20. Sorry if I got it wrong

Answer 2

Answer:

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Quadrilateral ABCD is a parallelogram. Let E be a point on AB, and let F$\ be the intersection of lines DE and BC The area of triangle EBF is 1, and the area of triangle EAD is 9. Find the area of parallelogram ABCD.

Answers

Answer:

Step-by-step explanation:

It is 24
Hope this is correct

Simplify the expression 2x(4 + x - 9 + 3x)
A. 8x - 10
B. -2x²
C. -10x²
D. 8x² - 10
E. 8x² - 10x

Answers

Answer:

E. 8x² - 10x

Step-by-step explanation:

4+x-9+3x

=x+3x+4-9

=4x+4-9

=4x-5

=2x(4x-5)

=8x² - 10x

E. 8X^2-10x ! hope this helps

URGENT Two numbers have a sum of 2 and a difference of -16. What are the numbers?

Answers

Answer:

-7 and 9!

Step-by-step explanation:

To get to the sum of 2 you add -7 and 9.

To get to the diffrence of -16 you minus -7 and 9.

-7 and 9! The answer is -7 and 9

1. 4 < 7 Multiply both sides by 3, then by 2, then by 4, then by 9

2. 11 > -2 Add 3 to both sides, then add 3, then add (-4)

3. -2 < -2 Subtract 6 from both sides, then 8, and then 2

4. -4 < 8 Divide both sides by -4, then by -2

5. Write a short explanation of the effects of the above operations. Did this affect the inequality sign? Was it still true? Why or why not?

Answers

Answer:

1. 864 < 1512

2. 12 > 0

3. question 3 is wrong -2 = -2

4. -0.5 < 1

5. In the above operations, they did not effect the inequality sign because the same operation is being done to both sides, therefore the inequality sentences all remained true.

Step-by-step explanation:

1. (3)(4) < (7)(3)

(2)12 < 21(2)

(4)24 < 42(4)

(9)96 < 168(9)

= 864 < 1512

2. 3+11 > -2+3

3+ 13 > 1 + 3

-4+16 > 4-4

= 12 > 0

3. -2 = -2 (question 3 is wrong)

4. -4/-4 < 8/-4

1/-2 > -2/-2

= -0.5 < 1

Whats the answer to the question...

Answers

Answer:

first graph equation is (0,5)

second graph equation is(-6,0)

The Answer is (0,5)(-6,0)

HELP PLEASE URGENT!!!!

Kelly works at her own nail salon. Today, she did 11 manicures and received $46.75 overall in tips If x represents the cost of each manicure, which of the following equations can be used to find the total amount of money she eamed, including tips, for her nail salon today?

Answers

Answer:

C...11 manicure X cost of each manicure

11x

46.75 is her tips

total is 11x+46.75

Answer: y= 11x+46.75

Step-by-step explanation:

We know that Kelly did 11 manicures, we don't know how much each manicure costs so we will say that each manicure costs x amount of dollars. If Kelly receives $46.75 in tips and we need to figure out how much she made in total, we add together the tip amount and the cost of the 11 manicures. Which should look like, 11x+46.75=y

What is the Leading Coefficient of 3x^6-2x^9+5x-12 when written in Standard Form?
ASAP!!!!

Answers

Answer:

-2

Step-by-step explanation:

3x^6-2x^9+5x-12

Write from highest power of x to lowest power

-2x^9+3x^6+5x-12

The leading coefficient is the number in front of the highest power of x

-2

-2 because I used parentheses and it made it a whole lot easier some nice advice if you like in class try to put parentheses a little more most people in my class don’t use it but it make hard stuff way easier have a nice day

(Name all sets to which each value belongs. Rational, irrational, whole or natural.

Answers

Answer:

Step-by-step explanation:

The natural numbers, whole numbers, and integers are all subsets of rational numbers. In other words, an irrational number is a number that can not be written as one integer over another.

Moderators i have not copied this ans

Real number is the set of all numbers, including all rational and irrational numbers. Any number that we can think of, except complex numbers, is a real number. Explanation: The set of real numbers, which is denoted by R, is the union of the set of rational numbers (Q) and the set of irrational numbers (Q').

..? ⬇️

The natural (or counting) numbers are 1,2,3,4,5,
1
,
2
,
3
,
4
,
5
,
etc. There are infinitely many natural numbers. The set of natural numbers, {1,2,3,4,5,...}
{
1
,
2
,
3
,
4
,
5
,
...
}
, is sometimes written N
N
for short.

The whole numbers are the natural numbers together with 0
0
.

(Note: a few textbooks disagree and say the natural numbers include 0
0
.)

The sum of any two natural numbers is also a natural number (for example, 4+2000=2004
4
+
2000
=
2004
), and the product of any two natural numbers is a natural number (4×2000=8000
4
×
2000
=
8000
). This is not true for subtraction and division, though.

The rational numbers are those numbers which can be expressed as a ratio between two integers. For example, the fractions 13
1
3
and −11118
−
1111
8
are both rational numbers. All the integers are included in the rational numbers, since any integer z
z
can be written as the ratio z1
z
1
.

All decimals which terminate are rational numbers (since 8.27
8.27
can be written as 827100
827
100
.) Decimals which have a repeating pattern after some point are also rationals: for example,

0.0833333....=112
0.0833333....
=
1
12
.

The set of rational numbers is closed under all four basic operations, that is, given any two rational numbers, their sum, difference, product, and quotient is also a rational number (as long as we don't divide by 0
0
).

An irrational number is a number that cannot be written as a ratio (or fraction). In decimal form, it never ends or repeats. The ancient Greeks discovered that not all numbers are rational; there are equations that cannot be solved using ratios of integers.

The first such equation to be studied was 2=x2
2
=
x
2
. What number times itself equals 2
2
?

2‾√
2
is about 1.414
1.414
, because 1.4142=1.999396
1.414
2
=
1.999396
, which is close to 2
2
. But you'll never hit exactly by squaring a fraction (or terminating decimal). The square root of 2
2
is an irrational number, meaning its decimal equivalent goes on forever, with no repeating pattern:

2‾√=1.41421356237309...
2
=
1.41421356237309...

Other famous irrational numbers are the golden ratio, a number with great importance to biology:

1+5√2=1.61803398874989...
1
+
5
2
=
1.61803398874989...

π
π
(pi), the ratio of the circumference of a circle to its diameter:

π=3.14159265358979...
π
=
3.14159265358979...

and e
e
, the most important number in calculus:

e=2.71828182845904...
e
=
2.71828182845904...

Irrational numbers can be further subdivided into algebraic numbers, which are the solutions of some polynomial equation (like 2‾√
2
and the golden ratio), and transcendental numbers, which are not the solutions of any polynomial equation. π
π
and e
e
are both transcendental.

The real numbers is the set of numbers containing all of the rational numbers and all of the irrational numbers. The real numbers are “all the numbers” on the number line. There are infinitely many real numbers just as there are infinitely many numbers in each of the other sets of numbers. But, it can be proved that the infinity of the real numbers is a bigger infinity.

The "smaller", or countable infinity of the integers and rationals is sometimes called ℵ0
ℵ
0
(alef-naught), and the uncountable infinity of the reals is called ℵ1
ℵ
1
(alef-one).

There are even "bigger" infinities, but you should take a set theory class for that!

Evaluate this expression if x = -4, y = 5, and z = -13.

x - (-z)

Answers

Answer:

-17

Step-by-step explanation:

x - (-z)

Subtracting a negative is like adding

x+z

x = -4 and z = -13

-4 + -13

-17

Answer:

[tex]-17[/tex]

Step-by-step explanation:

Step 1: Evaluate the expression

[tex]x - (-z)[/tex]

[tex]-4 - (-(-13))[/tex]

[tex]-4 - (13)[/tex]

[tex]-4 - 13[/tex]

[tex]-17[/tex]

Answer: [tex]-17[/tex]

Which of the following expressions are equivalent (equal) to 3(2x - 7)

Answers

Answer:

6x - 21

Step-by-step explanation:

3(2x - 7)

Use the Distribute Property of Multiplication by multiplying the number outside the parenthesis with the numbers inside.

3 × 2x = 6x

3 × -7 = -21

Combine:

6x - 21

Hope this helped.

[tex]\huge\text{Hey there!}[/tex]

[tex]\huge\text{3(2x - 7)}[/tex]

[tex]\huge\text{\underline{\underline{DISTRIBUTE 3 WITHIN the PARENTHESES }}}[/tex][tex]\huge\text{3(2x) + 3(-7)}[/tex]

[tex]\huge\text{3(2x) = \bf 6x}[/tex]

[tex]\huge\text{3(-7) = \bf -21}[/tex]

[tex]\huge\text{= 6x - 21}[/tex]

[tex]\boxed{\boxed{\huge\text{Therefore, your ANSWER is: \textsf{6x - 21}}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\boxed{\huge\text{\boxed{\frak{Amphitrite1040:)}}}}[/tex]

I will put brainlyness answer please help me I really need it ASAP

Answers

The origin is the point (0,0) where the x and y axis intersect. To get to the point (-1,1) start at the origin, move one unit to the left and one unit up. To get to the point (1,-1.5) start at the origin and move one unit right and down one and a half. To get to the point (2, 1/4) start at the origin and move 2 units right and up one fourth of the way to 1.

Simplify the expression 2x(4 + x - 9 + 3x)

A. 8x - 10
B. -2x²
C. -10x²
D. 8x² - 10
E. 8x² - 10x

Answers

The answer is d 8x^2 - 10

The answer is = A. 8x-10 ✔️✅

Fill in the blanks.

(image attached)

Answers

Add 14 to each side to undo the negative 14/negative sign. divide each side by 6 to undo the 6x, simplify=5

Answer:

Add 14 to each side to undo the -14. Divide both sides by 6 to undo the 6x, and simplify to get 5.

Step-by-step explanation:

Find the simple interest on \$5,000 at 4% interest for 3years.

Answers

As SI =PTR/100
SI=600$

600 hope this helps :)

PLEASE HEEELPPP 15 POINTS PLESSEE

Answers

Answer:

200.96 yd^2

Step-by-step explanation:

Area of a circle = πr^2 where r = radius

radius = diameter/2

radius = 16/2

radius = 8

Area = π(8)^2

Area = π64

Area = 200.96 yd^2

area = 3.14r^2
16 yd / 2 = r = 8

area = 3.14(8)^2
= 3.14(64)
= 200.96 yd^2

Choose 3 of the following to write using a single, positive exponent: 2^-7, 3^-23, 11^-8, 4^-9, 2^-32, 8^-3

Answers

Answer: um

Step-by-step explanation:

In triangle JKL, JKL is a right angle, KM and is an altitude. JL=20 and ML=15, find KL

Answers

Answer:

KL = 17.32

Step-by-step explanation:

KL² = (M L)(J L)

KL² = (15)(20)

KL²=300

√KL²= √300

KL = 17.32

at McDonald's, you get a $1 coupon for every 3 fries you buy. What is the least number of fries you could buy in $10 in coupons?

Answers

Answer:

You must buy at least 30 fries to get 10 dollar ins coupons

Step-by-step explanation:

We can write a ratio to find the minimum

1 dollar 10 dollars

--------------- = -------------

3 fries x fries

Using cross products

1 *x = 10 * 3

x = 30

You must buy at least 30 fries to get 10 dollar ins coupons

Answer: 10 x 3 = 30
1 coupon= 3
10 coupon= 30

A group of 5 friends went to a baseball
game and spent a total of $93.75. If the
total money spent was divided evenly, how
much did they each spend?

Answers

Answer:

They each spent 18.75.

Step-by-step explanation:

Divide 93.75 by 5.

18.75 divide 93.75 by 4

Rewrite using a negative exponent.

1/3^2

Answers

Answer:

1/9 or 3^-2

Step-by-step explanation:

Ignore the value of 1/3 for now and just focus on the 3^2.

Find 3^2:

3*3 = 9

Now 9 is the denominator, therefore our answer would be 1/9 once you reassemble the fraction.

Because 1/9 is our new fraction, we can use a negative exponent to create the same result. This is because the negative exponent rule tells us that a number with a negative exponent should be put to the denominator. Therefore we can then use 3^-2.

Answer:

3^-2

Step-by-step explanation:

Joseph said that a rhombus with side lengths of 6 meters and a height of 4 meters has the same area as a parallelogram with a base of 12 meters and a height of 2 meters. Is he correct? Critique Joseph's reasoning. help plzz

Answers

Answer:

Area(s) of both rhombus and parallelogram are equal at 24 meters squared. Therefore Joseph had the correct reasoning in regards to area(s) of both rhombus and parallelogram are equal at 24 meters squared.

Step-by-step explanation:

To equate area of the rhombus, multiply the side length and height of rhombus in meters. (6 meters×4 meters=Area of 24 m°2). Area of parallelogram = (12meters ×2 meters= 24 m°2. Area(s) of both rhombus and parallelogram are equal at 24 meters squared. therefore

He was not correct because well… it’s obvious

Simplify -4|-5| - [2(-17)]

1. 54
2. 14
3. -14

Add an explanation on how you got the answer

Answers

54 is the answer of -4(-5)-(2(-17))

Answer:

1 . 54

Step-by-step explanation:

HELP I ONLY HAVE 5 MINUTES LEFT

Answers

Answer:

i=13

Step-by-step explanation:

i = 13 because it does

solve the following equation. answer in terms of a mixed number. 7(2x+6)=1

Answers

Answer:

[tex]7(2x + 6) = 1 \\ 14x + 42 = 1 \\ 14x = - 41 \\ x = - 2 \frac{13}{14} [/tex]

7(2x+6)=1
14x+42=1
14x=1-42
14x=-41
x=-41/14
=-2 13/14

I don't understand this math question! The pictures provided and I'd love if someone can explain it to me

Answers

Answer:

Hello,

Step-by-step explanation:

The first number is

[tex]\dfrac{8}{12}[/tex]

The second number is

[tex]\dfrac{9}{12}[/tex]

Their sum is:

[tex]\dfrac{8}{12} +\dfrac{9}{12} =\dfrac{8+9}{12}=\dfrac{17}{12}[/tex]

Answer:

Step-by-step explanation:

plsss helppp! i will give brainliest!!

Answers

i’m pretty sure it’s the last one (x-7, y+5)

bc if you input (2,3) 2-7, 3+5 it gives you the output -5,8

It’s the last one hope this guy

Determine whether each sequence is a geometric sequence. If yes, then state the common ratio.
5, 10, 15, 20,...

Answers

Answer:

Step-by-step explanation:

it is not a geometric sequence

Answer:

Step-by-step explanation:

Take the second term and divide it by the first term

10/5 = 2

Take the third term and divide it by the second term

15/10 = 3/2

The ratio is not the same so it is not a geometric sequence

1. Rút gọn biểu thức A(x) = (x+2)(x+3)(x+5) - (x-1)(x+4)(x+7). Từ đó tìm tất cả các giá trị x sao cho A(x) = 0.

Answers

x = -29/7

Step-by-step explanation:

A(x) = (x^2 + 5x + 6)(x + 5) - (x^2 + 3x - 4)(x + 7)

= (x^3 + 10x^2 + 31x + 30) - (x^3 + 10x^2 + 17x - 28) = 14x + 58

A(x) = 0 => 14x + 58 =0 => x = -58/14 = -29/7

Answer:

778744

Step-by-step explanation:

387t98878989890

POINTS IF HELP!!! Please help me?

Answers

2.24 should be correct

i think it is 2.24 !!!!!!!

I'm always forgetting how to do mean absolute deviation. Can someone remind me what the process is please?

Answers

i hope that helps. :)

Answer:

Take each number in the data set, subtract the mean, and take the absolute value. Then take the sum of the absolute values. Now compute the mean absolute deviation by dividing the sum above by the total number of values in the data set. Finally, round to the nearest tenth.

Step-by-step explanation:

Other Questions

explanation would be appreciated. i dont understand In a function g(x), g(1) = 5. Which could be the functionof g(x)? Before a big soccer game Charlie always eats a big dinner. Which characteristic of life does this fact best describe?A: Living things reproduceB: Living things respond to their environment.C: Living things use energyD: Living things grow and develop Selected accounts with some amounts omitted are as follows: Work in Process Oct. 1 Balance 24,900 Oct. 31 Goods finished X 31 Direct materials 94,400 31 Direct labor 197,000 31 Factory overhead X Finished Goods Oct. 1 Balance 14,800 31 Goods finished 322,700 If the balance of Work in Process on October 31 is $212,900, what was the amount of factory overhead applied in October? a.$197,000 b.$219,300 c.$434,800 d.$94,400 SPExplain four steps you can take to improve your writing.Enter your response here. Dome Metals has credit sales of $144,000 yearly with credit terms of net 120 days, which is also the average collection period. Assume the firm adopts new credit terms of 5/10, net 120 and all customers pay on the last day of the discount period. Any reduction in accounts receivable will be used to reduce the firm's bank loan which costs 10 percent. The new credit terms will increase sales by 20% because the 5% discount will make the firm's price competitive.Required:a. If Dome earns 25 percent on sales before discounts, what will be the net change in income if the new credit terms are adopted? b. Should the firm offer a discount? 'development of human resources develops the nation'.Justify it. During the international coronavirus pandemic, many people began acting aggressively toward individuals of Chinese descent, blaming them for the virus even though most of those people had lived in the United States for their entire lives. Those Chinese-Americans were the victim of a process called ________. The sum of 'n' terms of an arithmetic sequence is 4n2+3n. What is the first term, the common difference, and the sequence? Which claim from the speech best supports Warrens argument that wage inequality negatively affects people other than women? . . . women are tired of hearing that pay inequality isnt real.In 99.6 percent of occupations, men get paid more than women.For middle-class families today, it usually takes two incomes to get by, . . . . . . unequal pay makes it harder for them to pay back student loans. tailoring is the process of cutting and sewing.true or false Which graph represents the step function f(x)=x+2? 3. What is the solution to the equation x3 = = 216 A. 72 B. 27 C. 8 D.6 Which statement describes joint committees? Help help help help help help help help help help help help A 69.0-kg astronaut is floating in space, luckily he has his trusty 28.0-kg physics book. He throws his physics book and accelerates at 0.0130 m/s2 in the opposite direction. What is the magnitude of the acceleration of the physics book? A source must be cited A person who is 15 years old has a target heart rate range ofA. 132-176.B. 99132.C. 123-164.D. 114-152. Balance the following reaction: _______ CO + _______ HO + heat _______ CHO + _______ OPlease explain!*Note: If any of the coefficients are the number one. Please, write "1" in the space. Thanks! What is Kings conclusion in this passage?He is shocked by the tension of protest.Negotiation is better than protest.He is not afraid of tension.Tension is necessary for growth.