Help please, also this is khan academy

Help Please, Also This Is Khan Academy

Answers

Answer 1

Answer:

A

Step-by-step explanation:

Yoy get A by combining like terms.


Related Questions

When buying a candy bar, there is a 20% chance that it will also include a coupon for a second candy bar. A student wants to determine the probability that, if she buys 7 candy bars, more than 2 will include a coupon. To do this, she uses a random number table to pick 7 numbers from 1 to 5. She lets 1 represent a candy bar with a coupon and numbers 2 through 5 represent a candy bar without a coupon.. She repeats this for a total of 16 trials. The results are shown in the table.

Answers

Answer:

A1 = more than two 1s

A2 = 0.4286

Step-by-step explanation:

hope this helps!

In a hydroelectricity production, water falls from a dam into a turbine wheel 49 m below. What is the velocity of water at the turbine?

A) 0 m/s
B) 15.5 m/s
C) 31 m/s
D) 46.5 m/s

Answers

Answer:

C: 31 m/s

Step-by-step explanation:

It falls from a dam.

Thus;

Initial velocity; u = 0 m/s

Height; h = 49 m

Acceleration due to gravity is 9.8 m/s²

To solve for the final velocity this, we will use Newton's third equation of motion;

v² = u² + 2gh

v² = 0² + 2(9.8 × 49)

v = √960.5

v ≈ 31 m/s

the lines shown below are parallel. if the green line has a slope of -2/3, what is the slope of the red line?
PLEASE JUST TELL ME THE ANSWER AND DON’T GIVE ME A LINK!!!

Answers

Answer:

2/3

Step-by-step explanation:

If the line is perpendicular, multiply the slope by -1 to find the answer

3) 8x + 6y = 10 -8x + 6y = 2 Which statement about the system of equations is true? A) The system has exactly 1 solution B) The system has many solutions C) The system has no solution D) The system has exactly 2 solutions 3 3​

Answers

Answer:

A. Exactly one solution

Step-by-step explanation:

8x+6y=10

-8x+6y=2

0+12y=12 added two equations together

12y=12

y=1

solve for x

8x+6y=10

8x+6(1)=10

8x=4

x=1/2

Solve the following inequality 10>2x+5

Answers

Answer: 2.5 is greater than x

Step-by-step explanation:

What is the slope of the line given by the equation y = 12x?

Answers

Answer:

up 12 over 1

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

12 is before x and the b or y-intercept is 0

Hope it helps have a good day

help plzzzzzzzzzzzzzzzzz

Answers

Answer:

100

Step-by-step explanation:

a=b a=4x4x+x+10+6x+5=1804×+x+6x+10+5=18011x=180-15165÷15 =x=15

6x+10=15×6=90+10

=100

(a + 3)(a - 2)
a
2
3
4
5
16
7
8
O
9
0
41516
71819
+
1/23
аху

Answers

Answer:

im too late

Step-by-step explanation:

Urgent!!!!!!!!!
Can someone please give me the correct answer choice
I will mark the first person who answer without a link brainliest.
Please help!!!

Answers

Answer:  1 -3

Step-by-step explanation:

Answer:

(0,-3)

Step-by-step explanation:

If u count the spaces and move over and then down, u end up at (0,-3).

I need help, I'm struggling with this one a lot!! ^^

Answers

Answer:

15

Step-by-step explanation:

it says below 2.5 so you would not count the ones on 2.5 but count everything from 2 and below which wound be 15

Answer: 15 because if you look a the dots and it said less than 2,5 hours you would go backward from 2.5 all the way to 0 hours

hope it helps  

Is this correct???????????!!!!please gelppp

Answers

Answer:

Step-by-step explanation: it looks right to me but who knows

Answer:

Yes

Step-by-step explanation:

The line intersects the y axis at point 4 (y > 3/2 x + 4), and for every 2 squares to the right it goes 3 squares up (y > 3/2 x + 4). Also, it's the > sign, which is correct when it goes in that direction.

What is the mean price of $29 $58 $15 $129 $75 $22

Answers

$54.6666666 (or $54.67)
to find mean you add all of the number values. so 29 + 58 + 15 + 129 + 75 + 22 = 328. After that, you divide the value by the amount of numbers. so 328/ 6. that gives you 54.666666

If x = 6, then what is y in this equation

-2x + 16 = y?

1) y=-12

2)y = 22

3) y=4

4)y=-22

Answers

Answer:

y equals 4 because if you substitute solve and isolate you get that answer.

Ten deer were introduced into a protected preserve. Their expected population doubles each year. Which function represents the same relationship?

Answers

Answer:

y(t)= 10 (2)^t

Step-by-step explanation:

If t is the number of years given then the expected number can be found by

y(t)= 10 (2)^t

where t takes the value 0,1,2,3, and so on.

Putting t= 0

y(t)= 10 (2)^t

y(0)= 10 (2)^0

y(0)= 10   For the start the number of deer are 10.

Putting t= 1

y(t)= 10 (2)^t

y(1)= 10 (2)^1

y(1)= 20    After 1 year it has doubled to 20

Putting t= 2

y(t)= 10 (2)^t

y(2)= 10 (2)^2

y(2)= 40      After 2 years it has again doubled to 40

Putting t= 3

y(t)= 10 (2)^t

y(3)= 10 (2)^3

y(3)= 80   After 3 years it has again doubled to 80

An asteroid hit the earth and created a huge round crater. Scientists measured the distance around the crater as 26 miles. What is the area of the crater?

Answers

Answer:

53.8 mi^2

Step-by-step explanation:

First we need to determine the radius of the crater.  The circumfence formula is C = 2(pi)r, and here C = 26 miles.  Thus,

26 mi = 2(pi)r, so that

      26 mi

r = ------------ = 4.13 miles

        2pi

Then the area of the crater  is A = (pi)r^2, or:

A = 3.14(4.13 mi)^2 = 53.8 mi^2

Define a cubic polynomial and a binomial use only one variable in each). Show how to use the Vertical Method to multiply these two.pls Quick I do not wanna FAIL

Answers

Cubic polynomial

[tex] {x}^{3} + {2x}^{2} - 5x - 10[/tex]

Binomial

[tex]2x - 3[/tex]

By vertical method of multiplication we get,

[tex] {2x}^{4} + {x}^{3} - {16x}^{2} - 5x + 30[/tex]

I will give you BRAINLIEST for the correct answer

Answers

Answer:

The correct answer is A. 18 cm2

What is the difference in length between

Answers

Answer: 7/8

Step-by-step explanation:

1 1/4 - 3/8 = 1.25 - 0.375 = 0.875 = 7/8

A bird is 50 feet above sea level, a fish is swimming 23 feet below sea level. What's the distance between the bird and the fish

Answers

Answer:

73 feet

Step-by-step explanation:

50 + 23 = 73 feet

The figure is made up of a square and a rectangle. Find the area of the shaded region.

m2
please help first one correct gets barlyest

Answers

Answer:

[tex] 10 \: { \: m}^{2} [/tex]

Step-by-step explanation:

area of the shaded region = Area of triangle formed in rectangle with base (10 - 6 = 4) 4m and height 2 m + Area of triangle formed in square with base 2 m and height 6 m

[tex] = \frac{1}{2} \times 4 \times 2 +\frac{1}{2} \times 2\times 6 \\ \\ = 4+6 \\ \\ = 10 \: { \: m}^{2} [/tex]

Answer:

shaded region = 10 m squared

Step-by-step explanation:

Area square = 6x6 = 36    Area reatangle 4x2 = 8

both areas = 44

Now lets subtract some white parts to obtain the shaded parts

1/2 of 4x6 = 12

1/2 of 6x6 = 18

1/2 of 4x2 =4

12+18+4= 34

44-34 = 10

The median income for a sample of people from Chicago is about $60,000 and the
median income for a sample of people from Kansas City is about $46,000, but
researchers have determined there is not a meaningful difference in the medians.
Explain why the researchers might be correct.

Answers

Answer:

106,000 is the answer help me with my answer to

Answer:

The medians differ by $14,000, but if the IQR is larger than about $7,000, there will not be a meaningful difference between the median salaries in the two cities.

Step-by-step explanation:

A water pipe takes 45 minutes to fill a
tank. How many water tanks it would fill in
6 hours.
Math

Answers

Answer:

It would fill 8 tanks

Step-by-step explanation:

45minutes = 3/4 of an hour

It would fill 6/(3/4) tanks in 6 hours

6/(3/4) = 6/3*4 = 2*4 = 8

I HELP NEED ASAP PLZ HELP ME

Answers

Step-by-step explanation:

hope it helps.........

Answer:

The answer is 6.

Step-by-step explanation:

All you need to do is turn 33 and 44 into a fraction ([tex]\frac{33}{44}[/tex]). Then you need to simplify it and it's simplest form is [tex]\frac{3}{4}[/tex]. then you up the fraction to [tex]\frac{6}{8}[/tex] and that's your answer.

Work out the value of
x


The diagram is not drawn to scale.

Answers

The shape is a pentagon.

The interior angles of a pentagon always add up to 540°.

When you add up all the labeled angles in the picture, you get (16x + 12).

16x + 12 = 540

16x = 528

X = 33

Step-by-step explanation:

4x-25+3x+25+3x+15+4×+2x-3=360

4x+3x+3x+4x+2x-25+25+15-2=360

16x +12=360

16x=360-12

16×÷16=348÷16

×=21.75


Javier will have a party at home. His budget is no more than $75 for pizzas and wings.
The price of the pizza is $7.50 each and one package of wings is $5.50. Which inequality
can be used to determine the number of pizzas x and packages of wings y that Javier can
buy?
A 7.50x + 5.50y > 75
B 5.50x + 7.50y s 75
C 7.50x + 5.50y s 75
D 7.50x - 5.50y 27

Answers

Answer: 7.50x+5.50 less than or equal to 75

Step-by-step explanation:

PLS HELP ME Giving brainliest!! On Monday, 316 students went on a trip to the zoo. All 6 buses were filled and 4 students had to travel in cars. Write and evaluate an expression in terms of xx to determine how many students were in each bus.

Answers

Answer:

xx = (316 - 4) ÷ 6

xx = 52 students per bus

Which of the following expressions shows the distributive property applied to the expression below?
z × (6 + 35)

A.
z + (6 + 35)
B.
(z + 6) × (z + 35)
C.
(z × 6) + (z × 35)
D.
z × (6 × 35)

Answers

Answer:

C. (z×6)+(z×35)

.....

.

HELP QUICK I NEED AN ANSWER RN PLS

Answers

Answer:

r = 3.7 cm

Step-by-step explanation:

19.02 = 1/2π(2radius) + diameter

expanding:

19.02 = 1/2(3.14)(2r) + 2r

19.02 = 3.14r + 2r = 5.14r

r = 19.02/5.14 = 3.7 cm

Solve for x: 2(2a+3)-6=5a+2

Answers

Answer:

a=-2

We move all terms to the left:

2(2a+3)-6-(5a+2)=0

We multiply parentheses

4a-(5a+2)+6-6=0

We get rid of parentheses

4a-5a-2+6-6=0

We add all the numbers together, and all the variables

-1a-2=0

We move all terms containing a to the left, all other terms to the right

-a=2

a=2/-1

a=-2

Step-by-step explanation:

We move all terms to the left:

2(2a+3)-6-(5a+2)=0

We multiply parentheses

4a-(5a+2)+6-6=0

We get rid of parentheses

4a-5a-2+6-6=0

We add all the numbers together, and all the variables

-1a-2=0

We move all terms containing a to the left, all other terms to the right

-a=2

a=2/-1

a=-2

Please like and give me Brainliest!

Answer:

a = -2

Step-by-step explanation:

2(2a+3)-6=5a+2

distrubute the 2

4a + 6 - 6 = 5a + 2

   combine like terms

    4a = 5a + 2

    -5a     -5a

        -a = 2

         a = -2

PLZ HELP
Classify each pair of numbered angles.

Drag and drop the descriptions into the boxes to correctly classify each pair of numbered angles. Each description may be used more than once.

Answers

Answer:

Angles 1 and 2 are vertical

Angles 3 and 4 are adjacent

Step-by-step explanation:

Other Questions
State the assumption you would make to start an indirect proof of each statement.1. BD bisects ABC.2. RT = TS choices;a) 60degreeb) 70degreec)80degreed)90degree In 2015, the population of the United States was about 320 million people. About 7 out of 10 Americans live in urban areas. How many Americans live in or near large cities? 224 million 32 million 96 million 10 millionplz I need help fast 4. A car is moving at 10m/s when it begins to accelerate to 2.5m/s. (a). Howlong does it take to reach a 25m/s? HELP I PUT IT AT HIGHEST POINTS POSSIBLEWhat does Jake tell Summer to look at?O the pyramidsO the flashlightsO houses with flat roofsO the people True or False.The expressions 4(y3) and 4y12 are equivalent? help pls. no links. and thx ill give branilest if u want it How does Marjane Satrapi use structure and style to achieve a specific purpose for a specific audience? Bill Tallyrand, as county assessor, entered into a fraudulentscheme at the urging of his son Tom, the county collector.Together they bilked the citizens of Lawrence County out ofmillions of dollars. After the scheme was discovered, Billrefused to testify against his son by claiming the FifthAmendment's prohibition against self-incrimination. Thecounty prosecutor then granted Bill immunity, but he stillrefused to testify. What punishment can the court inflictupon Bill to compel his testimony? Please answerOn the last page of her spiralshe found a note that tellsher to multiply the numberofpages she has filled by 17.The note also tells her totake her answer to theschool officeto pick up a prize if theanswer is correct. What isthe correct answer?A 2,432B 1,240C 2,346D 2,436 how many bones are in the human neck In the excerpt above, what does "this interest" refer to?F The Confederate States of AmericaG Protective tariffsH SlaveryJ The U.S. Constitution Help quick!Which systems are involved with the breakdown and delivery of nutrients from recently eaten food to the cells and the removal of waste materials from the body? A. excretory, skeletal, and digestive B. digestive, nervous, and endocrine C. excretory, circulatory, and nervous D. digestive, circulatory, and excretory What is the first step in the adult criminal justice process?O A. AppealO B. ArrestC. TrialD. Bail Hearing Homologous structures show ____ _____ on a____ anatomical theme. These are seen in organisms that are____ related. Give an example of a homologous structure from this activity:____ This too UwUThank uuuuu In this project, you will develop a model of a chemical reaction that either releases energy or absorbs energy. Whether a reaction releases or absorbs energy depends on the overall difference in the bond energies of the reactants and products. Your model should show the relationships between the parts of the system. These parts are the molecules and atoms that take part in the reaction. The model should also distinguish the reaction system from other systems. HELP ME PLEASE I NEED A GOOD GRADE What is the function of the nucleus?control center of the cellmakes energymakes foodlets materials in and out of the cell WHICH IS THE SMALLEST EVEN PRIME NUMBER