which of the following is equivalent to the expression below?

(a²-2b²+3)-(4b²+5)+(3a²+4)

A: 4a²-6b²+12
B: 4a²-6b²+2
C: 4a²+2b²+2
D:4a²+2b²+12​

Answer:

39

Step-by-step explanation:

I'm assuming x is supposed to be a multiplication sign.

You need to use PEMDAS for this:

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

(9x2+3x-5)-(3x2+4x-10)=

(18-15)-(6-40)=

3-(-36)=

3+36=

39

Answer:  72

Step-by-step explanation:    so you do a line = line method the lines should look like they are fractions.  

you do it for the both numbers the percent is always out of 100.

it should look like this

40%            ?

--------- = -----------    

100%       180

then you cross multiply 40 and 180 and than divide it by 100.   your answer should be 72.    you later replace the ? with 72

you know this because It is smaller than 180 and its bigger than the number 40.

The number pages left to read is 12 pages.

Given that, George still has 40 percent of his book to read.

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Let the total number of pages be x.

Now, x-40% of x=180

⇒ x-0.4x=180

⇒ 0.6x=180

⇒ x=180/0.6

⇒ x=300

So, remaining pages = 300-180=120

Therefore, the number pages left to read is 12 pages.

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Answer:

170

Step-by-step explanation:

20 + (26 - 1)6

= 20 + (25)6

= 20 + 150

= 170

The 26th term in the arithmetic sequence: 20, 26, 32, 38, ... is 170

Given:

20, 26, 32, 38, ...

nth term = a + (n - 1) d

where,

20, 26, 32, 38, ...

a = 20

d = 26 - 20

= 6

= 20 + (26 - 1) 6

= 20 + (25) 6

= 20 + 150

= 170

Therefore, the 26th term in the arithmetic sequence is 170

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Answer:

[tex]\sqrt{83\\}[/tex] has the closet value to 9 bc its 9.11

Answer:

P is the independent variable while S is the dependent variable

Hope this Helps :)

Answer:

1. 44 inches

hope this helps :)

Answer:

a < b < c

Step-by-step explanation:

a is -4, which is less than b, at 1, and c at 7.

If this answer is correct, please make me Brainliest!

Answer:

the answer is a it cant not be b,c

Answer:

70

Step-by-step explanation:

its in the tens value

Answer:

70

Step-by-step explanation:

The number is in the tenths place.

Answer:

If two things are equivalent, they are the same. Equivalent expressions are expressions that are the same, even though they may look a little different. If you plug in the same variable value into equivalent expressions, they will each give you the same value when you simplify.

Step-by-step explanation:

Answer: Two expressions are said to be equivalent if they have the same value irrespective of the value of the variable(

Step-by-step explanation:

Answer:

-3π+4

Step-by-step explanation:

negative three pi plus 4   BRAINLIEST :)

Answer:

[tex]\left(4-3\pi \right)^2 \text{ is a perfect square trinomial}[/tex]

[tex]\left(4-3\pi \right)^2=16-24\pi +9\pi ^2[/tex]

[tex]\sqrt{16-24\pi +9\pi ^2}\approx 5.42[/tex]

[tex]\sqrt{(4 -3\pi )^2} = -4 + 3\pi[/tex]

[tex]\sqrt{(4-3\pi )^2} = |4-3\pi|[/tex]

State that this is wrong, it cannot be negative

[tex]\sqrt{(4 -3\pi )^2} = 4 - 3\pi[/tex]

So,

[tex]\sqrt{(4 -3\pi )^2} \neq 4 - 3\pi[/tex]

State that [tex]\sqrt{a^2}=|a|[/tex]

It is [tex]a[/tex] assuming that a > 0

But we don't know if a is greater than 0.

Answer:

1:5, 5, 15

Step-by-step explanation:

The original ratio of red marbles to white marbles is 6:30 and you need to know how many white marbles are expected with 3 red marbles so you have to make the # of red marbles 3 so you can divide by 2 and you'll get 15 white marble or you could've divided both sides by 6 and get the ratio of red marbles to white marbles as 1:5 and you can see that for every one red marble there is 5 white marbles.

Answer:

No, the sides of a triangle cannot have the lengths 2, 5, and 5.

Step-by-step explanation:

Using the right triangle formula, aka. the Pythagorean Theorem, which is [tex]a^{2}+b^{2}=c^{2}[/tex] we need to substitute the sides given with the variables.

[tex]2^{2} +5^{2} =5^{2}[/tex]

Simply to [tex]4+25=25[/tex].

Add 4 to 25.

29 [tex]\neq[/tex] 25

Answer:

No....

Step-by-step explanation:

it cannot because triangle throrem says that the 2 smaller sides of of triangle must be greater than one side. 2+5 = 7, and 7>5.

Answer:

I believe it is 65 inches.

Step-by-step explanation:

If you add all the surfaces up besides the sides that are not frosted then it is 65 inches.

Answer:

81 has the most factors of 3

Step-by-step explanation:

To conclude which of the following options has the most factors of 3, take each of the number's prime factorization, which will help us solve the problem.

( 1 ) 81 is a composite number and is 9 squared. Knowing that 3 squared = 9, we can say that the prime factorization of 81 = 3 [tex]*[/tex] 3 [tex]*[/tex] 3 [tex]*[/tex] 3, which can also be denoted as 3⁴.

( 2 ) 270 is a composite number. The exponents in the prime factorization are 1, 3, and 1, and therefore it's prime factorization is - 3 [tex]*[/tex] 5 [tex]*[/tex] 3 [tex]*[/tex] 2 [tex]*[/tex] 3, composed of 3 3s.

( 3 ) If we put all of it together we have the factors 3 x 3 x 3 x 37 = 999. It can also be written in exponential form, with 3 to the power of 3 - hence having 3 factors of 3.

And finally the value 3333 has the prime factorization of 3 [tex]*[/tex] 11 [tex]*[/tex] 101, and as you can see it has 1 factor of 3. 81, having 4 factors of 3, is present with the most factors, and therefore is our solution.

Number 81 has the most number of factor 3. Option A is correct.

A number from the options to be determined that has the most number of factor 3.

factors can be defined by splitting the value into multipliable values.

Here,
Factors of 81 = 3,3,3,3            Number of factor 3 = 4
Factors of 270 =2,3,3,3,5       Number of factor 3 = 3  
Factors of 999 =3,3,11             Number of factor 3 = 2
Factors of 3333 = 3,11             Number of factor 3 = 1
As per the above comparison, 81 has the most number of factor 3.

Thus, Number 81 has the most number of factors 3.

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Answer:

I think its B

Hope it helps :/

Answer:

y=10x-50

Step-by-step explanation:

Answer:

Since its a right triangle you automatically know the C is 90 degrees. And since all triangle have to add up to 180 degrees, you know B has to equal 40 degrees.

A= 50

B= 40

C= 90

B + C

40 + 90

BC = 130 degrees

Answer:

2.3

Step-by-step explanation:

Khan

Answer:

The correct options are;

1) Sandy is correct

2) The figure was divided into two rectangular prisms that are calculated separately

Step-by-step explanation:

Here we have to divide the figure into two rectangular prisms so as not to calculate for a dimension twice

Therefore, the figure can be split into a horizontal prism at the top with dimensions and volume = 10 × 4 × 3 and the vertical prism below will now have a dimension and hence, volume of 4 × 4 × 3

Therefore the volume of the figure is the sum of the volumes of the two prisms found as follows;

Volume of the figure =  10 × 4 × 3 + 4 × 4 × 3  = 168

We can try the othe way to confirm as follows

Volume of the prism below = 4 × 3 × 8 = 96

Volume of the horizontal prism above is now = 4 × 3 × 6 = 72

Volumre of the figure = 96 + 72 = 168

Therefore, since the volume = (10 × 4 × 3) + (4 × 4 × 3), Sandy is correct

Because the figure was divided into two rectangular prisms that are calculated separately.

Answer:

1(sandy is correct)

2(do not overlap

Step-by-step explanation:

Answer:

[tex]x^2-2x-35[/tex]

Step-by-step explanation:

[tex](x+5)(x-7)=[/tex]

[tex]x^2+5x-7x-35=[/tex]

[tex]x^2-2x-35[/tex]

Hope this helps!

Answer:

X^2-2x-35

Step-by-step explanation:

(X)(x)+(x)(-7)+(5)(x)+(5)(-7)

X^2-7x+5x-35

X^2-2x-35

Hope that was the answer you were looking for

Answer: 98

Step-by-step explanation: 25+24+25+24

There are two parts to a rectangle. The opposite sides are the same. You add them all up to equal 98.

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Answer:

y=-2x+8

Step-by-step explanation:

Slope: [tex]\frac{y2-y1}{x2-x1}[/tex]

= [tex]\frac{24 - 17}{3 - 2}[/tex] = [tex]\frac{7}{1}[/tex] = 7

Slope = 7

Happy to help!

Answer:

Choice 2 on the upper right

Step-by-step explanation:

counterclockwise is to the left.

Answer:

y = - 2, x = 2

Step-by-step explanation:

Remove x and solve for y

2x - 2x - 5y - y = 12

-6y = 12

y = - 2

Substitute y back into the equation

-2 + 2x = 2

2x = 4

x = 2

Answer:

Step-by-step explanation:

C

Answer:

C

Step-by-step explanation:

2/10 1/9

It will take about 3.75 hours to complete.

Answer:

1. False

2. True

Step-by-step explanation:

Answer:

(x - 9.2)^2 + (y + 7.4)^2 = (5/3)^2

Step-by-step explanation:

We start with (x - h)^2 + (y - k)^2 = r^2.  The center is (h, k) and the radius is r.

Then we have:

(x - 9.2)^2 + (y + 7.4)^2 = (5/3)^2