PLZ IF YOU GET THESE TWO I WILL GIVE BRAINLEST

Answer:

3/5x+3/8

the second one

Answer:

Both A and B are true identities

Step-by-step explanation:

A. N ( n − 2 ) ( n + 2 ) = n 3 − 4 n

We need to show that (left-hand-side)L.H.S = R.H.S (right-hand-side)

So,

 n ( n − 2 ) ( n + 2 ) = n(n² - 2²)     (difference of two squares)

                               = n³ - 2²n       (expanding the brackets)

                               = n³ - 4n         (simplifying)

So,                L.H.S  = R.H.S

B. ( x + 1 )² − 2x + y² = x² + y² + 1

We need to show that (left-hand-side)L.H.S = R.H.S (right-hand-side)

So,

( x + 1 )² − 2x + y² = x² + 2x + 1 - 2x + y²   (expanding the brackets)

                             = x² + 2x - 2x + 1  + y²   (collecting like terms)

                             = x² + 1 + y²        

                             = x² + y² + 1                    (re-arranging)

So,              L.H.S  = R.H.S

So, both A and B are true identities since we have been able to show that L.H.S  = R.H.S in both situations.

Answer:

80000

Step-by-step explanation:

Here, we want to write the number in one significant figure

What we have to do here is to simply turn the numbers after 8 to zero

This is because the first number is less than 5

So we have the significant figure as 80000

formula 50 + 10 + x = 180

Answer:

if there both negatives it should only be one i believe. not sure though

Answer:

22-25=-3

Or did I not understand?

Answer:

x = 5 ,

y = 3

Use substitution method .

I will solve your system by substitution.

(You can also solve this system by elimination.)

2x+y=13;5x−4y=13

Step 1: Solve 2x+y=13 for y:

Solve 2x + y = 13 for y

2x + y + -2x = 13 + -2x

(add -2x to both sides)

y = -2x + 13

Step 2: Substitute −2x+13 for y in 5x−4y=13:

5x−4y=13

5x−4(−2x+13)=13

13x−52=13(Simplify both sides of the equation)

13x−52+52=13+52(Add 52 to both sides)

13x=65

(Divide both sides by 13)

13x/13 = 65/13

x = 5

Step 3: Substitute 5 for x in y = −2x+13:

y = −2x+13

y = (−2)(5)+13

(Simplify both sides of the equation)

y = 3

Answer: x= 5, y= 3

Answer:

x = 13

Step-by-step explanation:

The angle adjacent to (2x + 19) on line l is corresponding to (9x + 18) and are congruent.

Then (2x + 19) and (9x + 18) are adjacent angles and supplementary, that is

2x + 19 + 9x + 18 = 180

11x + 37 = 180 ( subtract 37 from both sides )

11x = 143 ( divide both sides by 11 )

x = 13

Answer:

x = 13

Step-by-step explanation:

(9x+18)+ (2x+19) = 180 because they are same side exterior angles

reduce:

11x + 37 = 180

11x = 143

x = 13

check:

9(13) + 18 + 2(13) + 19 = 180

117 + 18 + 26 + 19 = 180

180 = 180

-7x+6

thats the answer have fun:)

Answer:

100%

Step-by-step explanation:

Convert fraction (ratio) 320 / 320

Answer:

3, 4, -7

Step-by-step explanation:

Coefficients are the numbers in front of the variable.

Answer:

20/5 = 4, the slope is 4

Step-by-step explanation:

I wouldn't use the dotted red line for rise/run since it does not cross at a whole number, I would use the origin (0,0), and (5,20) since those seem to cross perfectly on the lines, so the slope is rise/run = 20/5 or 4/1 or 4

Answer:

Its blurrrr

I can't even see the question!!

The weight in grams of the liquid in the container is required.

The weight in grams of the liquid that fills the container is 24.68 grams. The calculations to find this value is shown below.

V = Volume of liquid in the container = 182.8 milliliter

[tex]\rho[/tex] = Density of liquid = 0.135 grams over milliliter

The relation between volume, mass and density is given by

[tex]m=\rho V\\\Rightarrow m=0.135\times 182.8\\\Rightarrow m=24.678\approx 24.68\ \text{grams}[/tex]

Learn more about density:

https://brainly.com/question/6838128

Answer:

a) per year

Step-by-step explanation:

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

Answer: lesser x = 3.76 & greater x = 8.24

Step-by-step explanation: just took the test

For the given quadratic equation lesser x=3.765 and greater x=8.235.

The given quadratic equation is (x-6)²-5=0.

We need to find the solutions from least to greatest.

The formula to find the solution to the quadratic equation is [tex]x=\frac{-b\pm\sqrt{b^{2}-4ac }}{2a}[/tex].

Now, (x-6)²-5=0 can be written as x²-12x+31=0

Here, a=1, b=-12 and c=31

x=(12±√20)/2

⇒x=(12±4.47)/2

⇒x=3.765 or x=8.235

Therefore, lesser x=3.765 and greater x=8.235.

To learn more about the solution of quadratic equation visit:

https://brainly.com/question/17376136.

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Answer:

more than one

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

Lets break it down.

5 1/4 = 5 2/8 = 42/8

So great now we have 42/8

42 divided by 3 (the amount of frosting needed)

You get 14

Jasmine can make 14 cupcakes

Hope it helps :)

Answer: 12 people

Step-by-step explanation:

insert 12 where the "x" is and type in the full equation into a calculator, and you will get 17.5

Answer:

10.8 hours left

Step-by-step explanation:

If you take 36 and divied it by 10 you get 3.6 then you times it by 3 to get 30% and 10.8 hours left

Answer:

i think this is correct, but if im wrong im so sorry

Step-by-step explanation:

you have 83.3 minuets

or

1 hour 23 1/3 minets

Answer:

160 plastic cubes

Step-by-step explanation:

first find the volume the box can hold so,

4 x 2.5 x 2 = 20ft^3

from their find the volume of each plastic cube so,

.5 x .5 x .5 = .125ft^3

then you can divide the volume of the box by the volume of the plastic cube to see how many will fit

20 ÷ 0.125 = 160 plastic cubes

Answer:

160 ;)

from k12

Answer:

Answer would be D. $150

Step-by-step explanation:

If $500 is the amount invested at $3 simple interest, that would be $15 every year. Take 15 and times it by the 10 years, and that would be $150 for 10 years.

Therefore the answer is D, $150.

Hope this helped.

The value of "a" for a narrow graph will be equal to 7.

A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

GIven functions are:-

f(x)   =   ax²

f(x)   =   7

At the value of a=7 the graph of function f(x) =  7x² opens upward and is narrower than the graph of f(x) = x².

Hence the value of "a" for a narrow graph will be equal to 7.

To know more about graphs follow

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Answer:

Step-by-step explanation:

The common ratio is a constant found by dividing any term by the previous term.

10/30=1/3

103/10=10.3

Since those fractions are not equal this is NOT a geometric sequence.

Answer:

Mean x¯¯¯ 5

Median x˜ 5

Mode 6

Range 6

Minimum 2

Maximum 8

Count n 10

Sum 50

Quartiles Quartiles:

Q1 --> 3

Q2 --> 5

Q3 --> 6

Interquartile

Range IQR 3

Step-by-step explanation: