5x^2+-8x^2 how to simplify

Answers

Answer 1
These terms are like terms since they are completely the same, excluding the coefficient. To combine the terms, add the coefficients.

5+(-8)=-3

Final answer: -3x^2

Related Questions

Given f(x)=6x^4, find f^-1(x). Then state whether f^-1(x) is a function.

Answers

The inverse function of f(x) = 6x^4 is f^(-1)(x) = (x/6)^(1/4), and f^(-1)(x) is a function.

To find the inverse function of f(x) = 6x^4, we can follow these steps:

1. Replace f(x) with y:
y = 6x^4

2. Swap x and y:
x = 6y^4

3. Solve for y:
Divide both sides by 6:
x/6 = y^4

4. Take the fourth root of both sides:
(x/6)^(1/4) = y

Now we have found the inverse function:
f^(-1)(x) = (x/6)^(1/4)

To determine if f^(-1)(x) is a function, we need to check if it passes the vertical line test. The vertical line test states that if a vertical line intersects a graph in more than one point, then the graph is not a function.

Let's imagine graphing f^(-1)(x) = (x/6)^(1/4). We see that for every x-value, there is only one corresponding y-value. Hence, each vertical line will intersect the graph at most once, confirming that f^(-1)(x) is indeed a function.

In conclusion, the inverse function of f(x) = 6x^4 is f^(-1)(x) = (x/6)^(1/4), and f^(-1)(x) is a function.

If twenty-four is subtracted from a number, the result is the same as the number divided by nine. What is the number?

Answers

x - 24  = x /9
multiply through by 9:-
9x - 216 = x
8x = 216 
x = 27 answer

The required number is 27.

What are linear equation?

A linear equation only has one or two variables. No variables in a linear equation is raised to power greater than 1 or used as denominator of a fraction.

Let x be the number,

Then

Twenty-four is subtracted from a number = x - 24

and number divided by nine = x/9

Now according to the question,

x - 24 = x/9

Multiplying whole equation by 9 we get,

9x - 216 = x

Adding 216 both the sides we get

9x  = x + 216

Substracting x both the side we get

8x = 216

Dividing whole equation by 8 we get

x = 27

which is the required number.

Hence,the required Number is 27.

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An elephant can run one over four mile in 36 seconds. Which of the following correctly shows this rate as miles per hour?

Answers

36 x 4 =144 per hour

Please help!! Evaluate the piece wise function at x=-4 and x=4.

Answers

x = -4, so use the first equation, x^2 = -4^2 = -16

x = 4, use 3rd equation, sqrt(x) = sqrt(4) = 2

Can someone solve this?

Answers

greg score = x

 kara score = 3/4x-1

x + 3/4x-1 = 153

1 3/4x -1 = 153

1 3/4x = 154

x = 154 / 1 3/4 = 88

gregs score was 88

 kara s score was 153 -88 = 65


Michael made 4 dozen chocolate chip cookies he is bringing 75% of them to school for a party how many cookies does he bring to chool

Answers

Final answer:

Michael made 48 cookies and is bringing 75% of them to a school party. To calculate this, multiply 48 (the total number of cookies) by 0.75, resulting in 36 cookies that he will bring to school.

Explanation:

Michael made 4 dozen chocolate chip cookies. He wants to bring 75% of them to school for a party. To find out how many cookies he will bring, we need to calculate 75% of 4 dozen cookies. Since each dozen is 12 cookies, 4 dozen would be 4 times 12, which equals to 48 cookies.

To find 75% of 48, you can either multiply 48 by 0.75 or calculate 75/100 of 48:

48 × 0.75 = 36 (75/100) × 48 = 36

Therefore, Michael will bring 36 cookies to the school for the party.

Final answer:

Michael brings 36 cookies to school for the party.

Explanation:

To find out how many cookies Michael brings to school, we need to calculate 75% of the total number of cookies he made.

Michael made 4 dozen cookies, and a dozen is equal to 12, so he made a total of 4 x 12 = 48 cookies.

75% of 48 is calculated by multiplying 48 by 0.75. 48 x 0.75 = 36.

Therefore, Michael brings 36 cookies to school for the party.

Help Needed xD

What is the value of X?
Remember to show calculations and formulas used for credit. 

Question 1 options:

Save

Question 2 (3 points)
 
What is the measure of one of the exterior angles of a regular octagon?
Make sure to show your calculation and formulas used for credit. 

Question 2 options:

Answers

Question 1:

The shape is an irregular hexagon
The sum of interior angles of a hexagon is given by (number of sides - 2) × 180°
A hexagon has 6 sides, hence number of side is = 6
Sum of interior angle = (6 - 2) × 180 = 4 × 180 = 720°

The size of angle x° = 720 - (112 + 120 + 100 + 128 + 133)
The size of angle x° = 720 - 593
The size of angle x° = 127°
---------------------------------------------------------------------------------------------------------------

Question 2

The sum of exterior angles of any polygon is 360°
If the polygon is a regular polygon, the length of its sides will all be equal and the size of the exterior angles will also be equal.

Octagon has eight sides
A regular octagon has eight equal exterior angles

The size of one exterior angle in a regular octagon is 360 ÷ 8 = 45°

What was the name of Jupiter’s big pet dog

Answers

Great Red Spot
Why is this joke haunting me??
Final answer:

Jupiter, the Roman king of the gods, has no mythical records signifying that he had a pet dog. He is mostly associated with the eagle and the bull.

Explanation:

Jupiter, the Roman king of the gods, The question you're asking seems to be based on the mythology of the Roman god Jupiter. However, there is no record in Roman mythology of any pet dog belonging to Jupiter. Jupiter, also known as Jove, was the king of the gods and the god of the sky and thunder in Ancient Rome. Animals often associated with him are the eagle and the bull, but not a dog.

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What is the slope of the line through (1, -1) and (5, -7)? Your Answer Must Be Exact, Be sure to make the answer a fraction.

Answers

[tex]\bf \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) &({{ 1}}\quad ,&{{ -1}})\quad % (c,d) &({{ 5}}\quad ,&{{ -7}}) \end{array} \\\\\\ % slope = m slope = {{ m}}= \cfrac{rise}{run} \implies \cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{-7-(-1)}{5-1}\implies \cfrac{-7+1}{5-1} \\\\\\ \cfrac{-6}{4}\implies -\cfrac{3}{2}[/tex]

Yoon Ki drove form Phoenix to Tucson in 1 1/2 hours. Then she drove form Tucson to El Paso in 4 3/4 hours. The second part of her trip was how many times as long as the first part?

Answers

(4 3/4) / (1 1/2) =
(19/4) / (3/2) =
19/4 * 2/3 =
19/6 =
3 1/6 <=== the second part of the trip was 3 1/6 times as long as the first part

Graph y = −x2 − 2. Identify the vertex of the graph. Tell whether it is a minimum or maximum.


(0, –2); minimum


(–2, 0); minimum


(–2, 0); maximum


(0, –2); maximum

Answers

y  = - x^2 - 2

the vertex of - x^2 will be at (0,0)
the -2 translates the graph down 2 units

The answer is the vertex is at (0,-2)  and  as the coefficient of x^2 is negative it is a maximum

Answer is  D.


Answer:

(0, –2); maximum

Step-by-step explanation:

[tex]y = -x^2 - 2[/tex]

WE are given with the quadratic equation.

Vertex form of quadratic equation is in the form of [tex]y=a(x-h)^2+k[/tex]

where (h,k) is the vertex

[tex]y = -(x-0)^2 - 2[/tex]

The value of a=-1

when the value of 'a' is negative, then the vertex is maximum

To find the vertex we look at the value of h  and k

h=0 and k= -2

Vertex is (0,-2)

(0, –2); maximum

If you flip a coin three times what is the probability of getting three tails in a row

Answers

easy. The answer is 1/8

is dilated by a scale factor of 3 to form . Point O is the center of dilation, and point O lies on . If the slope of is 3, what can be said about line ?

a.The slope of is 6, but does not pass through O.
b.The slope of is 9, and passes through O.
c.The slope of is 9, but does not pass through O.
d.The slope of is 3, and passes through O.
e.The slope of is 3, but does not pass through O.

Answers

I want to say... C. Hope this helps.

Evaluate the expression. Drag the answer into the box to match the expression. 27⋅((33)−1) 
27
3
1
1/9

Answers

The answer is 1.

3^3 = 27
27^-1 = 1/27
1/27 x 27 = 1

I took this test and got this question right.

Answer:

1

Step-by-step explanation:

[tex]27 \cdot ((3^3)^{-1})[/tex]

We need to evaluate the given expression

3^3 is 3 times 3 times 3= 27

[tex]27 \cdot ((3^3)^{-1})[/tex]

[tex]27 \cdot ((27)^{-1})[/tex]

Now we apply exponential property

[tex]a^{-m}= \frac{1}{a^m}[/tex]

[tex]27^{-1}= \frac{1}{27}[/tex]

[tex]27 \cdot ((27)^{-1})[/tex]

[tex]27 \cdot \frac{1}{27}=1[/tex]

Find the value of x in the equation 9-4x=57

Answers

9 - 4x = 57

-4x = 57 -9

-4x = 48

-4x/-4 = 48/-4

x = -12

hope this helps

A math class containing 57 students was divided into two sections one section has three more students than the other how many students were in each section

Answers

32 In one section and 25 in section two or vice versa
(3+x)+x=57
3+x+x=57
3+2x=57
2x=57-3
2x=54
x=54/2
x=27
so the first section has 27 students and the second section has 30 students

Can someone please help me

Answers

Let 
x = measure of angle TAP
y = measure of angle BRE

We're told that "angle BRE is its own complement" meaning that angle BRE added to itself is 90 degrees. In algebraic terms, we can say

y+y = 90
2y = 90
2y/2 = 90/2
y = 45

So angle BRE is 45 degrees. Note how 45+45 = 90. 

We also know that angle TAP and angle BRE are supplementary. They add up to 180 degrees

x+y = 180
x+45 = 180 ... replace y with 45
x+45-45 = 180-45 ... subtract 45 from both sides
x = 135

Since we defined x to be the measure of angle TAP, this means that angle TAP is 135 degrees

Find each product by factoring the tens.
6 x 2, 6 x 20, 6 x 200
_________________
_________________
P.S those lines are for the answer

Answers

A technique for mental multiplication is called factoring the tens which relies on the fact that 10*n, for any real number n. This will make the problems easy to compute. 6 x 2 = 12 is a memory value. 

12  x 10  = 120

12   X 100  = 1200

Take for instance in 6 x 2, 6 x 20 and 6 x 200. Find the factors and these are the computations. We can also say: 

6 x 20 = 6 x 2 x 10 = 12 x 10 = 120 
60 x 20 = 6 x 10 x 2 x 10 = 12 x 10 x 10 = 1200

It must be remembered that in the commutative and associative properties of multiplication, the order of the factors does not matter when solving this kind of problem

1.What is the value of x?


2.What is the value of x?
Enter your answer as a decimal.

3.What is the value of x?

4.What is the value of x?


5.The area of a right triangle is 210 in². The height of the right triangle is 35 in.

What is the length of the hypotenuse of the right triangle?

Enter your answer in the box.

Answers

Problem 1)

Let p = distance from V to Y

By the angle bisector theorem, we can form the proportion

VT/VY = TK/KY
57/p = 129.2/68
57*68 = p*129.2
3876 = 129.2p
3876/129.2 = 129.2p/129.2
30 = p
p = 30

Use the value of p to find x
x = VY+YK
x = p+68
x = 30+68
x = 98


Answer: 98 mm

===========================================

Problem 2)

The triangles are similar, so we can form a proportion of the corresponding sides

MN/MA = MP/MB
67.2/(67.2-32) = 81.9/x
67.2/35.2 = 81.9/x
67.2*x = 35.2*81.9
67.2*x = 2882.88
67.2*x/67.2 = 2882.88/67.2
x = 42.9


Answer: 42.9 meters

===========================================

Problem 3)

Similar to problem 1, we use the same theorem

EG/GD = EH/HD
44.8/(x+4) = 56/35
44.8*35 = 56(x+4)
1568 = 56x+224
1568-224 = 56x+224-224
1344 = 56x
56x = 1344
56x/56 = 1344/56
x = 24


Answer: 24 millimeters

===========================================

Problem 4)

We'll use a similar idea used in problem 2

9/(9+72) = (3x-20)/((3x-20)+56)
9/81 = (3x-20)/(3x+36)
1/9 = (3x-20)/(3x+36)
1*(3x+36) = 9(3x-20)
3x+36 = 27x-180
3x+36+180 = 27x-180+180
3x+216 = 27x
3x+216-3x = 27x-3x
216 = 24x
24x = 216
24x/24 = 216/24
x = 9


Answer: 9 centimeters

===========================================

Problem 5) 

Area of triangle
A = 0.5*b*h

Plug in A = 210 and h = 35; solve for b
A = 0.5*b*h
210 = 0.5*b*35
210 = 0.5*35*b
210 = 17.5*b
12 = b
b = 12

Now use the base and height to find the hypotenuse

a^2 + b^2 = c^2
h^2 + b^2 = c^2
35^2 + 12^2 = c^2
1369 = c^2
c^2 = 1369
sqrt(c^2) = sqrt(1369)
c = 37


Answer: 37 inches
Final answer:

The base of the triangle is calculated to be 12 inches using the area and height. Then, through the Pythagorean theorem, the hypotenuse is found to be approximately 36.06 inches.

Explanation:

The subject of the question is related to the calculation of a triangle's hypotenuse using the area and height of a right triangle. Given that the area of a triangle is calculated by halving the product of the base and the height (Area = 1/2 * base * height), we can use the given area to find the base of the right triangle.

First, we call the base of the triangle 'x'. The area is 210 square inches and the height is 35 inches.

We rearrange the formula for the area of a triangle to find 'x' as follows:  base = (2*Area) / height.

Our calculation then becomes x = (2*210) / 35. This simplifies to x = 12 inches.  

Next, we use the Pythagorean Theorem, that states: a² + b² = c², where 'c' represents the hypotenuse. Here, 'a' is the base found (12 inches), 'b' is the height (35 inches), and 'c' is the hypotenuse we're seeking.

Plugging the values into the theorem, we get c = √(12² + 35²). Hence, the hypotenuse of the right triangle is approximately 36.06 inches.

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An electrician cut 36 feet of wire into sections that were each 8 feet long. After cutting, how many pieces of wire did the contractor have?

Answers

divide 36 by 8

36 / 8 = 4.5

 so he had 4 pieces that were 8 feet long and he had 1 piece 4 feet long

 so he had 5 pieces of wire

Evaluate 3x+y3x+y when x=13x=13 and y=−74y=−74. write your answer as a fractionin simplest form.

Answers

3x + y ; when x = 13, and y = -74

Plug in 13 for x, and -74 for y :)

3(13) + (-74)

39 - 74

Simplify.

-35

~Hope I helped!~

Solve for x 3(2x-1)=9

Answers

x=2!Thats your answer!
3(2x-1)=9       distribute 3

6x -3= 9         add 3

6x= 12         divide by 6 

x= 2



How to factor 81y^2 -4

Answers

[tex]\bf \textit{difference of squares} \\ \quad \\ (a-b)(a+b) = a^2-b^2\qquad \qquad a^2-b^2 = (a-b)(a+b)\\\\ -------------------------------\\\\ 81y^2-4\quad \begin{cases} 81=9^2\\ 4=2^2 \end{cases}\implies 9^2y^2-2^2\implies (9y)^2-2^2 \\\\\\ (9y-2)(9y+2)[/tex]

is 4x-3=19 true, false, or open

Answers

True.

4x-3=19

4x=21 (add 3)

x=5.25 (divide both sides by 4)

Answer:

Open

Step-by-step explanation:

i just took the quick check

trust me

I need help plz show work plz

Answers

2.) -8(x-6) + 7(-x-6)
-8x+48 + -7x-42
-15x+6

4.) -7(1-3b) + b(8b-6)
-7+21b + 8b²-6b
-7+15b+ 8b²
Hope this helps love :)


Error analysis a studinet write the word phrase the quotient of n and 5" to describe the expression 5/n describe and correct the students error

Answers

Final answer:

The student made an error in describing the expression 5/n as "the quotient of n and 5." The correct phrase to describe this expression would be "the quotient of 5 and n."

Explanation:

The student made an error in describing the expression 5/n as "the quotient of n and 5." The correct phrase to describe this expression would be "the quotient of 5 and n."

When describing division, it is important to remember that the dividend (the number being divided) comes before the divisor (the number dividing the dividend).


∠1 and ∠2 are supplementary and ∠1 ≅ ∠2. Which one of these statements will always be true?


∠1 and ∠2 are adjacent angles


∠1 and ∠2 are vertical angles


∠1 and ∠2 are right angles


∠1 and ∠2 are complementary angles

Answers

1 and 2 are right angles.

Supplementary means they add up to 180. If they are congruent, both of them must be 90 degrees, which are right angles.

Hope this helps!

∠1 and ∠2 are right angles

What are Congruent Triangles?

Transformations change the size or position of shapes. Congruent shapes are identical, but may be reflected, rotated or translated. Scale factors can increase or decrease the size of a shape. Congruent Triangles simply mean the triangles that possess the same size and shape

•  The three sides are equal (SSS: side, side, side)

•  Two angles are the same and a corresponding side is the same (ASA: angle, side, angle)

•  Two sides are equal and the angle between the two sides is equal (SAS: side, angle, side)

•  A right angle, the hypotenuse and a corresponding side are equal (RHS, right angle, hypotenuse, side)

Given data ,

∠1 and ∠2 are supplementary

So , ∠1  + ∠2 = 180°

∠1 ≅ ∠2

So , ∠1 and ∠2 are congruent

Since , we know that both of these angles are congruent and supplementary , both of the angles add up to 180°

So , each of the angle measures a total of ∠1 = 180° / 2

                                                                           = 90°

And ∠2 = 90°

When the angle of a triangle is 90° , the angle is known as right angle

So ∠1  and ∠2 are right angles

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Noam walks home from school by walking 8 blocks north and then 6 blocks east. How much shorter would his walk be if there were a direct path from the school to his house? Assuming that the blocks are square.

Answers

Final answer:

To find out how much shorter Noam's walk would be if there were a direct path from the school to his house, we need to calculate the displacement using the Pythagorean theorem. Noam walks 8 blocks north and then 6 blocks east. The displacement is the straight-line distance from the starting point to the endpoint. Therefore, the displacement is the square root of (8² + 6²), which is the square root of 64 + 36, which is the square root of 100, which is 10 blocks. So, if there was a direct path, Noam's walk would be 10 blocks shorter.

Explanation:

To find out how much shorter Noam's walk would be if there were a direct path from the school to his house, we need to calculate the displacement using the Pythagorean theorem. Noam walks 8 blocks north and then 6 blocks east. The displacement is the straight-line distance from the starting point to the endpoint.

The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Therefore, the displacement is the square root of (8² + 6²), which is the square root of 64 + 36, which is the square root of 100, which is 10 blocks. So, if there was a direct path, Noam's walk would be 10 blocks shorter.

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Is the square root of 7 an irrational number

Answers

Yes the square root of an irrational number is 7

The square root of 7 is an irrational number because it cannot be expressed as a ratio of two integers and its decimal form is infinite and non-repeating.

The square root of 7 is indeed an irrational number. An irrational number is one that cannot be expressed as the ratio of two integers, or as a predictable or repeating decimal. Unlike the square roots of perfect squares like 4 or 25, which are 2 and 5 respectively, the square root of 7 does not result in a whole number or a rational fraction. Additionally, this number cannot be exactly represented by a finite or repeating decimal sequence, which means it continues infinitely without repetition.

When we use a calculator to determine the square root of 7, we might see a value such as 2.646, but this is only an approximation because the actual decimal expansion goes on infinitely without repeating. Furthermore, the square root of a number like 7 does not solve a polynomial with rational coefficients, which further proves its irrationality.

Rational numbers, on the other hand, include integers and fractions where the numerator and the denominator are both integers. Numbers like 2/3 are rational because they have a clear ratio. However, roots of numbers that are not perfect squares, such as √7, cannot be expressed in such a ratio and are therefore irrational.

35.7 divided by 11.4

Answers

The full answer is 3.13157894737
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