2x•(-3x)+5•(2x²)-x•x=

??

Answers

Answer 1

Answer:

Step-by-step explanation:


Related Questions

9. A candle has an initial height of12 inches. Sara lights the candle and it begins to melt at an average rate of 0.5
inch per hour. Which function can be used to find the height of the candle inches after x hours?
A) H(X) = 0.5(x +12) B) H(x) = -0.5(x +12) C)H(x) = 12 +0.5x
+
D) H(X) = 12 -0.5x
1 Pt
А.
B
D
E

Answers

Answer:

D

Step-by-step explanation:

h(x)=12-0.5x

x=hour

Help me pleaseeeeee!!

Answers

The answer : 4.159%

How : 12890000 divided by 309.9 million gives you - 4.159%

Lex be a random variable that represents the pH of arterial plasma (le, acidity of the blood). For healthy adults, the mean of the distribution is - 7.4.1 A new drug for arthritis has
been developed. However, it is thought that this drug may change blood pH. A random sample of 31 patients with arthritis took the drug for 3 months. Blood tests showed that x = 8.6 with
sample standard deviations - 2.7. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood.
USE SALT
(a) what is the level of significance?

what is the value of the sample test sisse? (Round your answer to three decimal places)

Answers

Answer:

2.304

Step-by-step explanation:

Keith 1,342 cupcake rounds to 1,300 and joe 1,347 cupcake rounds to 1,350 who round to the nearest hundred?

Answers

Answer:

Keith

Step-by-step explanation:

When you are rounding to the nearest hundred it would NOT include a tens or ones value. So in this case 1,300 would be correct.

Hope that helps and have a great day!

Here is a figure that looks like the letter A, along
with several other figures. Which figures are scaled
copies of the original A?

Answers

Figure 2 as it is the same as original but bigger

-21x^2+35x=0
Solve for x

Answers

Answer:

Step-by-step explanation:

exact form: x=63/5

A group of students formed a circle during a game. The circumference of the circle was about 43.96 feet, and the diameter of the circle was 14 feet.



Which expression best represents the value of
π
?

A.
43.96
7

B.
43.96
14

C.
7
43.96

D.
14
43.96

Answers

Answer:

pi = pi

Step-by-step explanation:

Circumference = 2 * pi * r

Equation you need:

43.96 = 2 * pi * 7

43.96 = 2 * 7 * pi

43.96 / 14 = pi

pi = 3.14

what came in the mail today

Answers

Answer:

me

Step-by-step explanation:

A bunch of bills for spectrum tv

plz help me find x!!!!!!!!!!!!!!!!

Answers

Answer:

A: 45

B: 110

C: 25

Step-by-step explanation:

all angles of a triangle always add together to make 180

x + 25 + x + 65 = 180

combine like terms

2x + 90 = 180

subtract 90 from both sides of the equation

2x = 180 - 90

divide both sides of the equation by 2

x = 90/2

x = 45

Which of the following is a radical equation?
a. x StartRoot 3 EndRoot = 13
b. x + StartRoot 3 EndRoot = 13
c. StartRoot x EndRoot + 3 = 13
d. x + 3 = StartRoot 13 EndRoot

Answers

The starting radical equation of the problem is d x+3=StarRoot 13 EndRoot

Answer:

the answer is D

Step-by-step explanation:

help me solve please.​

Answers

X=1/2 because if you set the equations equal to each other you would get that x-value

It cost Emma $5.34 to send 178 text messages. How much does each text cost to send?

Answers

Answer:

approximately $0.33

Step-by-step explanation:

you just do 178/5.34

A line contains points M(1, 3) and N(5, 0). What is the slope of MN?

Answers

Answer:

-3/4

Step-by-step explanation:

y2-y1/x2-x1

0-3/5-1

A line contains points M(1, 3) and N(5, 0). The slope of MN is -3/4.

What is the slope of the line?

A line's slope provides information on the steepness and direction of the line. By calculating the difference between the coordinates of the two locations, (x1,y1) and (x2,y2), it is simple to calculate the slope of a straight line between them.

The slope, m, of the line, is calculated through the equation,

The formula used to find the slope is,

m = (y2 - y1)/ (x2 - x1)

Where (x1, y1) and (x2, y2) are the points

The given points on the line are:

M(1, 3) and N(5, 0)

Substituting it in the formula,

m = (0 - 3)/ (5 - 1)

m = -3/4

Therefore, the slope of MN is -3/4.

Learn more about the slope of the line here:

https://brainly.com/question/14511992

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Calculating Rate of change

Answers

Answer/Step-by-step explanation:

We are given the following coordinates of two points on the line of the graph shown in the question as: A(2, 1) and B(4, 2)

Vertical change from point A = [tex] y_2 - y_1 = 2 - 1 = 1 [/tex]

Horizontal change from point A = [tex] x_2 - x_1 = 4 - 2 = 2 [/tex]

Rate of change = [tex] \frac{y_2 - y_1}{x_2 - x_1} = \frac{1}{2} = 0.5 [/tex]

7th grade math help me pleasee

Answers

Answer:

a, c, b

Step-by-step explanation:

ITS CORRECT TRUST MEEE

10b - 2 = 7b - 7.4 NEED ASAP!!!!!!!

Answers

Answer:

b=−1.8

Step-by-step explanation:

PLZ HELP THIS IS DUE SOON!!!!!!! Divide. Round to the nearest hundredth if necessary.
To the nearest hundredth, 80.88÷8.425 is_______

Answers

Answer:

10

Step-by-step explanation:

when you divide 80.88 by 8.425 you get 9.6

and since youre rounding, you can round up 6 because its higher than 5

and your final answer should be 10.

hoped this helped! :)


Please help,
Determine which is the graph of the given function. f(x) 2x if < - 2 2x - 2 if - 2 < x < 2 -2 if x > 2​

Answers

Answer:

C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Skyler solved an equation incorrectly, as shown below:

Step 1: 12 + x = 36
Step 2: x = 36 + 12
Step 3: x = 24

Which statement best explains why Step 2 is incorrect in Skyler's solution?

Answers

Answer:

Step 2 is incorrect.

Step-by-step explanation:

It's incorrect because I'm pretty you need to do inverse operation. To get 24 you must subtract, not add.

help me please
*I select an answer, but I don't know if it's right or wrong*​

Answers

Answer:

yes your answer it right.... brainliest plsss

If Micah save $150 how much money will his parents give him

Answers

Answer:

$300

Step-by-step explanation:

150/5 = 30, 30 x 10 = 300

What is the solution (x,y) to the system of equations given? 2 x + 4 y = − 16 2x+4y=−16 2 y − x = = 16 2y−x==16

Answers

Answer:

(-12,2)

Step-by-step explanation:

2x + 4y = -16

2y - x = 16

Multiply the bottom part by 2.

2x + 4y = -16

4y - 2x = 32

Add the equations and the answers to the equations up, and they will equal each other.

(2x + 4y) + (4y - 2x) = -16 + 32

8y = 16

y = 2

Plug y = 2 to the 2nd equation.

2*2 - x = 16

4 - x = 16

Subtract 4 from both sides.

-x = 12

Multiply both sides by -1.

x = -12

first pirson to type 1 i will see if i can give brainlist but idk how bot i will try

Answers

Answer:

1

Step-by-step explanation:

you asked to type 1

A student uses the following steps to prove the sine sum identity. The proof is incorrect. Which steps is incorrect

Answers

Answer:

4

Step-by-step explanation:

The incorrect step is Step 4, cos (π/2 -x) cos(-y) + sin (π/2 -x)sin(-y), the correct option is C.

What is Trigonometric Identity?

Trigonometric Identities are based on the trigonometric ratios used to solve Trigonometric equations.

The steps used to solve the trigonometric identity are :

Step 1 :  sin(x+y)

Step 2: cos ((π/2) - (x+y))

Step 3 : cos ( (π/2 -x) -y)

Step 4 : cos (π/2 -x) cosy + sin (π/2 -x)siny

Step 5: sinxcosy+cosxsiny

Therefore,the correct step is cos (π/2 -x) cosy + sin (π/2 -x)siny  and not cos (π/2 -x) cos(-y) + sin (π/2 -x)sin(-y) , the incorrect step is Step 4.

The complete question is attached with the answer.

To know more about Trigonometric Identity

https://brainly.com/question/12537661

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help!!!

3 Peter measured the width of a room as 28 feet
and the length as 17 feet. About how many
square feet does the room cover?
Area = length X width

Answers

answer: 476
Area = length X width 28x17= 476


The fraction 24/28 In simplest form is____.
12/14
48/56
6/9
6/7

Answers

Answer:

6/7

Step-by-step explanation:

Answer:

6/7

Step-by-step explanation:

divide it by 4

Angle b= 61, angle c=57, and =2x what does x =

Answers

Answer:

can you provide more information

Step-by-step explanation:

Which set of ordered pairs does not represent a function?

Group of answer choices

{(6, 0), (-9, 5), (1, -5), (0, 0)}

{(4, 6), (6, 8), (3, 2), (-6, 8)}

{(-9, -7), (-8, -7), (8, 2), (9, -5)}

{(-8, 6), (-8, 5), (-9, 4), (-5, 3)}

Answers

Answer:

the last one

Step-by-step explanation:

No points on a function can have the same x value, can you give me brainliest

The midpoint of a line segment is (−3,2). One endpoint of the line segment is (4,−7).

What are the coordinates of the other endpoint of the line segment?

Answers

Answer:

The other endpoint is  (9, −6)

Step-by-step explanation:

(x1,y1)=(3,2) and M=(6,−2)

x1+x22=x     and     y1+y22=y

3+x22=6     and     2+y22=−2     ←×2

3+x2=12     and     2+y2=−4

x2=9              and     y2=−6

The coordinates of the other endpoint of the line segment are [tex]Y(x,y) = (-10, 11)[/tex].

Vectorially speaking, the midpoint of a line segment is determined by the following expression:

[tex]M(x,y) = \frac{1}{2}\cdot X(x,y) + \frac{1}{2}\cdot Y(x,y)[/tex] (1)

Where:

[tex]M(x,y)[/tex] - Midpoint.[tex]X(x,y)[/tex], [tex]Y(x,y)[/tex] - Endpoints of the line segment.

If we know that [tex]M(x,y) = (-3, 2)[/tex] and [tex]X(x,y) = (4, -7)[/tex], then the coordinates of the other endpoint is:

[tex]\frac{1}{2}\cdot Y(x,y) = M(x,y) -\frac{1}{2}\cdot X(x,y)[/tex]

[tex]Y(x,y) = 2\cdot M(x,y) -X(x,y)[/tex]

[tex]Y(x,y) = 2\cdot (-3,2)-(4,-7)[/tex]

[tex]Y(x,y) = (-6, 4) - (4, -7)[/tex]

[tex]Y(x,y) = (-10, 11)[/tex]

The coordinates of the other endpoint of the line segment are [tex]Y(x,y) = (-10, 11)[/tex].

We kindly invite to check this question on midpoints: https://brainly.com/question/17506315

can someone please help me

Answers

64 because 4 turns into -8 -8 turns into 16 and 16 turns into -32 so it must be 64

64 is the right answer
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