Mathematics High School

please help!!!

i need help with this

Please Help!!!i Need Help With This

Answers

Answer 1

Answer:

Step-by-step explanation:

Combine like terms. Like terms have same variable with same power

a) (2xy + 4x) + (15xy - 5x)  = 2xy + 15xy + 4x - 5x

                                         = 17xy - x

b) (6a + 4b² - 3) + (3b² - 5) = 6a + 4b² + 3b²  - 3 - 5

                                           = 6a + 7b² - 8

c) (4x³ - 3x² +4x) + (8x² - 5x ) = 4x³ - 3x² + 8x²  + 4x - 5x

                                               = 4x³  + 5x² - x

d) (7b - 6a  + 9y) - (12b + 5a - 2y) =

In subtraction, add the additive inverse of (12b + 5a - 2y)

additive inverse = - 12b  - 5a  + 2y

(7b - 6a  + 9y) - (12b + 5a - 2y) = 7b - 6a + 9y  -12b -5a + 2y

                                                   = 7b - 12b  -6a - 5a  + 9y + 2y

                                                   = -5b - 11a + 11y

e) (2x² + 7x - 2 + 9y) - (13x + 4x² + 5 - 6y)

Additive inverse of  13x + 4x² + 5 - 6y = -13x + 4x² - 5 + 6y

(2x² + 7x - 2 + 9y) - (13x + 4x² + 5 - 6y)= 2x² + 7x - 2 + 9y -13x - 4x² -5 +6y

                    = 2x² - 4x² + 7x -13x -2 - 5 + 9y + 6y

                    = -2x²  - 6x  - 7 + 15y

Related Questions

I need help with all 8!

Answers

1) D
2)
3) B
4 ) F
5)C
6) F
7) D
8) C

I'm not sure about questions 4 and 7, but they may be correct.

I couldn't because I couldn't see the 2nd question

classify the real numbers choose all that apply

Answers

rational because 5^3



irrational

Which of the following is a proportion?

Answers

Answer:

the second one

Step-by-step explanation:

PLEASE!!! PLEASE!!! PLEASE!!! I SWEAR TO GOD I WILL MARK YOU BRAINLIEST AS SOON AS I HAVE THE OPTION TO!!! ( Also pls don't answer unless you're actually going to help me, thank you!)

Answers

Answer:

Ok, I believe goes like this: the fourth blue box is first, the second blue box is second, the third blue box is third, and the first blue box is last.

Step-by-step explanation:

3 pizzas for $24.99_______________ cost of each pizza

Answers

Answer:

$8.33

Step-by-step explanation:

24.99 ÷ 3 = 8.33

Answer:

$ 8.33

Step-by-step explanation:

If 3 pizzas cost $24.991 pizza will now cost [tex] \frac{24.99}{3} [/tex] 1 pizza costs $8.33

Find the value of a. 19 km 19 km Perimeter = 57 kilometers​

Answers

Answer:

19km

Step-by-step explanation:

The formula for the perimeter of a triangle is: S+S+S.

So;

19km+19km+a=57km

a=57km-19km-19km

=19km

If 1 cm represents 5m, what is the scale drawing length of 18m?

Answers

Answer:

3.6 cm

Step-by-step explanation:

5 divided by 18 is 3.6. so its 3.6

1 cm 5m
x cm 18m
5x = 18
z = 18/5 = 3,6

Jane has 3 yards of ribbon. It takes 1/4 of a yard to make a bracelet. How many bracelets can she make?

Answers

Answer:

12 bracelets

Step-by-step explanation:

Kelly had a part-time job last year. She paid the state $234 in income tax. The state income tax rate is 5.2%. How much did Kelly earn?

Answers

Answer:

$4500

Step-by-step explanation:

Find how much she earned by dividing 234 by 0.052

234/0.052

= 4500

So, she earned $4500

Answer: see below

Step-by-step explanation:

Divide 234 by 5.2 to get one percent of her earnings, $45.

Multiply 45 by 100 to get 100% of her earnings, $4,500

If it asking for the gross earnings, leave it at $4,500

If it is asking for net earnings, subtract 234 from 4500 to get $4,266

Mhanifa Plz help me with this thank you!

Answers

Answer:

D

Step-by-step explanation:

This is an example of the Pythagorean theorem.

In triangle BEH, the sum of the squares of the sides of the two smaller sides, BE and BH is equal to the longest side squared, EH.

please help I need answer ASAP

Answers

10 and 2 im not sure if im right but sorry im dum----b

Help me please and i will give you a brainlist

Answers

Answer:

I believe it's Option B, hopefully this helps! Sorry if it doesn't

The area of a circle is 647 cm2. What is the circumference, in centimeters? Express
your answer in terms of pi.

Answers

Answer:

Hello! To find the answer you have to use the formula C=2 square x pie x the area. So the answer would be C= 90.17

Step-by-step explanation:

will y=2 (x-3)²-7 make a parabola or a circle

Answers

Answer:

Parabola

Step-by-step explanation:

Answer:

HEY BABY

Step-by-step explanation:

solve the triangle give the measure of angle G

Answers

Answer:

G = 46 degrees

Step-by-step explanation:

Here, we want to find the measure of angle G

Mathematically, as we can see, what we have is a right triangle

For a right triangle , the sum of angles is 90 degrees

Thus, if we add the two internal angles, we get 90 degrees

Hence;

44 + G = 90

G = 90-44

G = 46 degrees

Will mark brainlest

Answers

Answer:

15)

Step-by-step explanation:

i think its that since im guessing that x5 is the length of each side and since triangles have 3 sides so i did 5 x 3 which equals 15

15 POINTS!!!! HELPP PLEASEE QUICK I NEED IT NOWW PLSS I POSTED THIS SO MANY TIMES PLSSS NO LINKS NO BOT OR ANSWERS JUST TO GET POINTS I WILL REPORTT!! Which of the following equations describes the line shown below? Check all
that apply.
(-6,2)
(-1,-4)

Answers

Answer:

Pretty sure its A and B

Step-by-step explanation:

Slope is -6/5, so that leaves just A B and E

Plugged it in, only A and B were correct

convert 32 grams to kilometer

Answers

They are not compatible units

Answer:0.032

Step-by-step explanation:

Look, this is what it shows

Answers

Answer:

This is very similar to what we are proving if you just change the angles.

Which choice is equivalent to the product below?
√3x√5x√6
O A. 3√10
O B. 9√10
O C. 3√5
O D. 10√3

Answers

Answer:

D....................

find the area of the figure. round your answer to the nearest hundredth

Answers

Answer: 84.14

Step-by-step explanation:

Area of the rectangle is L*W=B*H

14*5=70

To find the area of the half circle we must use the formula pi r^2/2

r=radius

and the radius is 6 because we add 4 and 4 and need to get to 14

because the line below it is 14 and it is a rectangle so the lengths are the same.

Diameter=6

So radius =3

pi (3)^2/2=

9/2 pi + 70=

84.14

Answer: 84.13

lmk if this is wrong

Step-by-step explanation:

Area of the rectangle:

5(14)=70

Area of the half circle:

Formula: πr^2

Substitute: 3.14(3)^2

Solve: 3.14(9)

3.14(9)=28.26

Divide the area by 2 since it's a half circle

28.26/2=14.13

Add the area of the rectangle and half circle

70+14.13=84.13

What is the IQR of:
45, 32, 62, 26, 22, 29

Answers

Answer:

The first quartile is 26.

The third quartile is 45

The median is 30.5

The interquartile range is 19.

Hope that helped :)

Step-by-step explanation:

Select the TWO numbers that are solutions to the equation x2 = 49.
A. 49
B. 7
C. -49
D. 2
E. -7

Answers

Answer:

x = ±7

x=7, -7

Step-by-step explanation:

x^2 = 49

Take the square root of each side

sqrt(x^2) = sqrt(49(

x = ±7

A 6 ft. Observer cast a 4 ft. Shadow. At the same time the chimney on the Ohio Power Co. Cast an 804 ft. Shadow. How tall is the chimney?

Answers

Answer:

1,206 ft

Step-by-step explanation:

6/4 = 1.5   ( proportion 1.5)

804(1.5) = 1,206

Cheryl made a one-time deposit at Eagle Savings & Loan of $6,400. The bank offers a 4.5% interest rate compounded annually. What is the amount of interest Cheryl will earn at the end of 5 years? help please ((:

Answers

Answer: I am truly sorry for doing this.

Step-by-step explanation:

An angle measures 6º more than the measure of its complementary angle. What is the measure of each angle?​

Answers

Answer:

93º and 87º

Step-by-step explanation:

What is the probability that the dice shows a 2?​

Answers

Answer:

1/6

Step-by-step explanation:

the probability of rolling a 2 is 1/6

MARKING BRAINLIST PLEASE HELP TYSM!!

Answers

Answer:

20 2/3

Step-by-step explanation:

I did the math and it is right

Find a perimeter of a pool

Answers

Answer:

Which pool?

Step-by-step explanation:

Answer:

write full question.then I try

Step-by-step explanation:

please give me brain list and follow

Find the volume of the cone. Round your answer to the nearest tenth.
8 ft.
2 ft.

Answers

Answer:

134 is your answer hope it helps

Step-by-step explanation:

Other Questions
WILL MARK BRAINLIEST PLS HELP ME Please!helpHelp!Me! What sorts of things/ideas are valued in Henry's world? How are his values different from those of his society Each student in a classroom has chosen either a green, red, or blue marble and written their initials on it. In addition, some of the marbles have the letter A written on them, and some of the marbles have the letter B written on them. All of the marbles are shown below. All of the marbles are placed in a bag, and then one is randomly selected. A. The probability that the selected marble will have a B written on it is . B. The probability that the selected marble will be green is points. Can somebody please help me!! The top of a coin has a radius of 2 cm.What is the area of the top of the coin?4 cm2 cm4 cm2 cm WILL GIVE BRAINLILESTone of the major events pushing the US to enter the war world 1 I need help on the ASAP plz i will mark you brainly From each president choose one domestic policy and foreign policy 1.Calculate the percentage of the components of the compounds resulting from the following reactions(A) 222.6g N combined fully with 77.4g of O. (B) Decomposition of table salt which yields 2.62g of Na and 4.04g of Cl. This is one of the most important aspects of maintaining a good golf swing.addressing the ballthe wagglethe back swingmaintaining an even tempo Annabelles bicycle has a wheel radius of 13 inches. She places a sticker on the wheel so that its minimum height above the ground is 0.5 inches. When she rides her bicycle, the wheel completes 90 revolutions every minute. The sticker begins at its minimum height above the ground. Which equation models the height in inches of the sticker after x minutes? y = 0.5 sine (180 pi x) + 13 y = 12.5 sine (180 pi x) + 13 y = 0.5 sine (180 pi x minus StartFraction pi Over 2 EndFraction) + 13 y = 12.5 sine (180 pi x minus StartFraction pi over 2 EndFraction) + 13 Look at the picture below and choose the right statement. (5 points)(Choose 3 answers)MARKING BRAINLIEST!!A-3 quarter rests,1 half rest,2 eighth rests.B-1 half rest, 1 quarter note.C-2 eighth notes, 1 quarter note, 2 sixteenth rest.D-2 sixteenth notes,1 half rest.E-2 eighth rests, 2 sixteenth rest A frog can hop at a maximum speed of about 60 feet every 4 seconds. How far can the frog go in 30 seconds? Which benefit is provided by good flexibility?A. less risk of injuryB. longer enduranceC. muscle growthD. greater strength 1.A body of mass 10kg falling freely was found to be falling at a rat of 20m/s what force will stop the body in 2second? Dialysis tubing is permeable to water molecules but not too sucrose. Three dialysis tubes are filled with various solutions and placed in the beakers. Tube 1 contains 100% water, Tube 2 contains a 60% sucrose solution, and Tube 3 contains pure water but is submerged in a 60% sucrose solution.Question: Which tube will experience the greatest loss of water? Explain your answer using terms such as (hypotonic, hypertonic, isotonic, solute concentration, water concentration, homeostasis) * Difine the term compound A grab-bag contains 30 packages worth $.65 each, 10 packages $.60 cents each, and 15 packages worth $.30 each. What is the expected value if you have to pay $.50 to pick one package at random? images that are made up of pixels and cannot be resized without losing quality?