Help me I’m going a math test :))) will mark brainliest

Answer:

i don't know the answer but i really want the points

Step-by-step explanation:

Answer:

5. a^3 + b^3 = (a+b)^3 - 3ab(a+b)

Step-by-step explanation:

(a+b)^3

= (a+b) (a+b) (a+b)

={(a+b) (a+b)} (a+b)

={a(a+b) + b(a+b)} (a+b)

=(a^2 + ab + ab + b^2) (a+b)

=(a^2 + b^2 + 2ab) (a+b)

=a^2(a+b) + b^2(a+b) + 2ab(a+b)

=a^3 + a^2b + ab^2 + b^3 + 2a^2b + 2ab^2

=a^3 + b^3 + 3a^2b + 3ab^2

=a^3 + b^3 + 3ab(a+b)

(a+b)^3 = a^3 + b^3 + 3ab(a+b)

(a+b)^3 - 3ab(a+b) = a^3 + b^3

a^3 + b^3 = (a+b)^3 - 3ab(a+b)

Hope this helped!

Answer:

I am just giving the expansion, so that you can substitute the values and solve it

Answer:

B

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

The slope is 5/3

Step-by-step explanation:

Slope is y/x so its 5/3 becuase you go up 5 and over 3. And it's an incline so the slope is positive.

Brainly deleted my answer the first time lol. Please mark brainliest if correct.

Answer:

d

Step-by-step explanation:

hope this is right

Answer:

Step-by-step explanation:

1. yes it is a function. The x is used just once and will pass the vertical line test.

2.y =-2x+3. Yes. Came as above. The x intercepts are (3/2,0) and the y is (0,3)

3. x= -2. No because it is a straight line or vertical line up the -2

Answer:

y=1x+2

Step-by-step explanation:

Answer:

The range includes all numbers from 5 to 12.5.

Step-by-step explanation:

The range is along y- axis and the domain is along x- axis.

Range is given in heights and domain is given in time seconds.

It can depicted that for t= 0 secs the ball is at 5 feet and so on .

Therefore the range is given by numbers from 5 to 12.5.

Whereas the domain is given by numbers 0 t0 8.5 seconds

The range is the values of 'y' and the domain is the values of 'x'. So, the range of the includes all numbers between 5 and 12.5 and the domain includes all numbers between 0 and 8.5.

Given :

A child tosses a baseball up into the air. On its way down, it gets caught in a tree for several seconds before falling back down to the ground.

The graph attached below shows the given scenario that "A child tosses a baseball up into the air. On its way down, it gets caught in a tree for several seconds before falling back down to the ground".

The y-axis shows the height of the ball in feet from the ground and the x-axis shows the time in seconds.

The range is the values of 'y' and the domain is the values of 'x'. So, the range of the includes all numbers between 5 and 12.5 and the domain includes all numbers between 0 and 8.5.

Therefore, the correct option is A) The range includes all numbers from 5 to 12.5.

For more information, refer to the link given below:

https://brainly.com/question/11897796

Answer:

-2 is a negative number

Step-by-step explanation:

when multiplying or diving by a negative, you need to flip the inequality sign

Answer: 1/3x -2

Step-by-step explanation:

X-3y =6 subtract x from both sides first

-3y=6-x. Then divide both sides by -3

Y= 6-x /-3 simplify

Y= -2+x/3 rearrange

Y= 1/3x -2

Answer:

b(20) = 60

Step-by-step explanation:

Here, given that ;

b(x) = -2(x-50)

we want to find the value of b(20)

what we need to do is to simply substitute x for 20

That will be:

b(20) = -2(20-50)

b(20) = -2(-30)

b(20) = 60

Answer: Bigger X = 17       Smaller X = 1/3

Step-by-step explanation:

for the larger number

1x - 8 = 9 (equation)

X = 17 (the result)

for the smaller number

9x - 2 = 1 (equation)

X = 1/3 (the result)

Answer:

first one is 1

Second is -2/3

Answer:

x=1160 HAVE A GREAT DAY!!! :D

Step-by-step explanation:

Okay! So, first you would set up a proportion

x/1740=2/3

Then you cross multiply

3x=3480

After that, you divide both sides of the equation by 3

x=1160

Answer:

Step-by-step explanation:

Step one:

given

the number of tiles is 100 in total

the dimension of the tiles is 4.75 inches wide

Step two:

Required

We want to find the length that 100 tiles will cover

Hence the length will be 4.75*100

=475inches

Therefore the option C is correct

Answer:

I would say b

Step-by-step explanation:

I choose b because the question is linear and also non linear it only told us the distance which is 500x and no time but is saying as a function of time

C. The function is linear.

The given function is y = 500x, where x represents the time and y represents the distance from Portland. In this function, y is directly proportional to x, meaning that for every unit increase in x, y increases by a constant amount of 500.

Since the function is of the form y = mx, where m (in this case, 500) is the constant of proportionality, the function is linear.

Therefore, the correct answer is:

C. The function is linear.

To know more about Linear Function:

https://brainly.com/question/21107621?

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Answer:

The arc length is 4.36332.

Answer:

One solution.

Step-by-step explanation:

9514 1404 393

Answer:

  weight = 5, 6.5, 7.2, 9, 16

  cost = $2.50, $3.25, $3.60, $4.50, $8.00

Step-by-step explanation:

The first column tells you the cost is ...

  $2.50/(5 lb) = 0.50 $/lb

That is, each bottom number is half the top number, or each top number is double the bottom number.

The table is ...

  weight = 5, 6.5, 7.2, 9, 16

  cost = $2.50, $3.25, $3.60, $4.50, $8.00

Answer:

D

Step-by-step explanation

on the calculator it's 3.605551275 but rounding it is 4 so it's in between 3 and 4

Answer:

B) 2.2

Step-by-step explanation:

i took the test :)

The residual for the child will be 2.2. Then the correct option is B.

A statement, principle, or policy that creates the link between two variables is known as a function.

Monthly private school tuition based on the average number of weeks in attendance is predicted using the least-square regression line.

y = 265.9 + 93.4x, where y represents the predicted monthly expense and x represents the average number of weeks in attendance.

A child attends private school an average of 3.5 weeks and has a monthly cost of $595.

Then the residual for the child will be

⇒ 595 – (265.9 + 93.4 × 3.5)

⇒ 595 – (592.8)

⇒ 2.2

Then the correct option is B.

More about the function link is given below.

https://brainly.com/question/5245372

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Answer:

(1,0)-------Increases------X=0-----Decreases to negative infinity

Step-by-step explanation:

Value of function f(x) = logx at axis (1,0) is zero.

A graph can be defined as a pictorial representation or a diagram that represents data or values.

The graph of the logarithmic function y=logx is shown.

The domain of function f(x) = logx is the set of all positive real numbers.

1. f(x)=logx domain of the logirthimic function is (0, ∞).

2. The range is the set of all real numbers.

3. The function is continuous and one-to-one.

4. The y-axis is the asymptote of the graph.

5. The graph intersects the x-axis at (1,0). That is, the x-intercept is 1.

Value of function f(x) = logx at axis (1,0)

⇒ f(x) = 0

Thus, value of function f(x) = logx at axis (1,0) is zero.

Learn more about graph

https://brainly.com/question/16608196

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Answer:

4*3 - 3*3;

Joe read 3 more books than Craig

Step-by-step explanation:

Given

Craig:

3 books weekly for 3 weeks

Joe:

4 books weekly for 4 weeks

Required

How many more books did Joe read.

First, we need to determine number of books Craig reads

If in a week, Craig reads 3 books

Then in 3 weeks, Craig reads 3 * 3 books

Next, we need to determine number of books Joe reads

If in a week, Joe reads 3 books

Then in 4 weeks, Joe reads 4 * 3 books

Next, we determine the difference;

[tex]Difference = 4 * 3 - 3 * 3[/tex]

[tex]Difference = 12 - 9[/tex]

[tex]Difference = 3[/tex]

Hence, Joe reads 3 more books

Option D answers the question.

Answer:

d

Step-by-step explanation:

to find a discount you would multiply 50(0.20) whatever amount you get you would subtract that from 50

this is the same as 50(0.80)

Answer:

B) 15/8

Step-by-step explanation:

Use the SOH-CAH-TOA acronym:

• SOH: Sin(θ) = Opposite / Hypotenuse

• CAH: Cos(θ) = Adjacent / Hypotenuse

• TOA: Tan(θ) = Opposite / Adjacent

Tangent of A would be "opposite" over "adjacent". The side of the triangle opposite angle A would be 15, and the side adjacent to angle A would be 8 -- the value of tan(A) is 15/8.

Tan(A) cannot be 15/7, because 7 is the hypotenuse. Remember that the hypotenuse of a right triangle is the side opposite the 90° angle -- here, angle B is the 90° angle.