Evaluate the expression when b = 0.4.200b2−0.6÷bEnter your answer as a decimal in the box.

Answers

Answer 1

Answer:   its 150 i did the test

Step-by-step explanation:

Answer 2

Answer:

30.5

Step-by-step explanation:

I TOOK THE TEST AND IT WAS CORRECT IM FROM K12 BTW :D pls give me brainliest!


Related Questions

Math need help I’m tired

Answers

i'm thinking infinitely.

i'm not 100% sure maybe someone else may correct me .

QUICK QUESTION: What is the answer?

Answers

Answer:

2 AIF3... synthesis

Step-by-step explanation:

WELLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL

Find the surface area of a cylinder with a base radius of 4 cm and a height of 7 cm.
Use the value 3.14 for a, and do not do any rounding.
Be sure to include the correct unit.

Answers

Answer: 276.32cm³

Step-by-step explanation:

Surface area, A, of a cylinder is given by the formula:

A = 2*pi*r*h + 2*pi*r²

r = radius

h = height

Substituting pi for 3.14 gives:

A = (2 * 3.14 * 4 * 7) + (2 * 3.14 * 4²)

A = 276.32cm³

I've put them in brackets, but this is not necessary.

Which equation gives the line shown on the graph? 9 y = 2x + 4 10 9 ON y = 2x – 4 y y= 4x + 4 5 1 NEN 3 Y= - 12 - 4 2 1 012 3 4 5 6 7 8 9 10​

Answers

Answer:

A

Step-by-step explanation:

I think though im not sure

y = f(x) has the derivative f'(x) = (x + 1)²(x + 3)(x² + 2mx + 5) with ∀x∈i.
find m so that g(x) = f(|x|) has exactly 1 extreme point

Answers

9514 1404 393

Answer:

  m ≥ -√5

Step-by-step explanation:

If g(x) = f(|x|) for x∈i, then g(x) = f(x) for x∈ℝ: x ≥ 0.

f'(x) is 5th-degree, so f(x) is 6th-degree, meaning it is generally U-shaped. Since we're only concerned with x ≥ 0, we want to make sure f'(x) has no real zeros of odd multiplicity such that x > 0. The given factors of f'(x) make it have real zeros at x = -3 and x = -1.

For the last factor, (x² +2mx +5) to have no positive real zeros of odd multiplicity, we must have m ≥ 0 or the discriminant ≤ 0. The discriminant is ...

  d = b² -4ac = (2m)² -4(1)(5) = 4m² -20 . . . . . discriminant of the last factor

  d ≤ 0 . . . . . . . . . . the condition for no real zeros

  4m² -20 ≤ 0

  m² -5 ≤ 0 . . . . . . divide by 4

  m² ≤ 5 . . . . . . . . .add 5

  |m| ≤ √5 . . . . . . . take the square root

This tells us there will be a positive real zero of multiplicity 2 in f'(x) when m = -√5, and there will be no positive real zeros for -√5 < m < 0

There will be no odd-multiplicity positive real zeros in the derivative function f'(x) as long as m ≥ -√5. This means the slope of f(x) is non-negative for x ≥ 0, hence f(|x|) has its only minimum at x=0.

_____

Additional comment

The multiplicity of the zeros of f'(x) is important because the derivative will only change sign where the multiplicity is odd. When the discriminant of (x²+2mx+5) is zero, the associated positive real zero will have multiplicity 2, hence f'(x) will not change sign there.

Please please help please please help me please please help please please help me please please help please please AND SHOW YOUR STEPS PLEASE HELP ME PLEASE PLEASE

Answers

Answer:

Step-by-step explanation:

a)  Sum = - 6

Product = - 16

Factors = (-8) ; (2   {-8 + 2 = -6  ; (-8) * 2 = -16}

y = x² - 6x - 16

     = x²  + 2x - 8x - 16

     = x(x + 2) - 8(x + 2)

    = (x +2)(x -8)

b) y = 0

(x +2 )(x -8) = 0

x + 2 = 0  ;   x -  8 = 0

x = -2       ;  x = 8

(-2) ; 8 are the zeros.

What is 2,967 by 21 estimate

Answers

Answer:

60,000

Step-by-step explanation:

2,967 can be rounded to 3,000

21 can be rounded to 20

3,000 x 20 = 60,000

Charlotte bought 25 cookies to share with her class, and 5 of them are oatmeal raisin. What percent of the cookies are oatmeal raisin?

Answers

Answer:

20%

Step-by-step explanation:

25 divided by 5 = 5

Convert to decimal

0.20

Convert to percentage

20%

Answer:

20%

Step-by-step explanation:

25 divided by 5=5

convert to decimal

0.20

convert to percentage

20%

Jennifer pays $12.50 a month for Amazon Prime and pays extra every time she rents a movie. One month she rented 1 movie and paid $17.75. Another month she paid $49.25 and rented 7 movies.

Answers

Answer: y=5.25x+12.50

Step-by-step explanation:

The original 12.50 is how much she pays each month regardless of rented movies, it is the 0 value and doesn't change. Each rented movie costs 5.25 (17.75-12.50=5.25) and that value would be multiplied by the amount of movies she rents that month, and then added onto the original base value.

First of all to find out how much each movie cost .
17.75-12.50 = $5.25
So Jennifer paid one month $12.50 for Amazon Prime plus $5.25 = $17.75
Next month 5.25 x 7 movies = $36.75 plus 12.50 for Amazon Prime = $49.25
So to recap : one month pays $12.50 for Prime and $5.25 for one movie . Next month paid $12.50 for Prime and 7 movies totalling $36.75

Which one is the larger average rate, -3.142 or -0.5?

Answers

Answer:

The answer to this question is -3.142

-3.142 is the larger average rate

You are making a window frame in shop class. Two pieces of wood are cut to form complementary angles so they fit together properly. One angle needs to be (2x + 14)° and the other angle needs to be (3x +11)° . What is the measure of the larger angle? *

Answers

Answer:

90 degress

Step-by-step explanation:

2x+14+3x+11=90

5x+25=90

5x=65

x=13

2(13)+14+3(13)+11+ X = 180

26+14 + 39 + 11 + X = 180

40+50+x=180

90+x=180

x=90

Your other angle is 90 degrees.

A package of 8 hot dogs is on sale for $4.00. What is the price per hot dog?

Answers

each hot dog is 50 cents. Because .50+.50+.50+.50+.50+.50+.50.50=4 We know each hot dog is worth .50 cents because a pack of 8 HD cost $4 so each HD would need to cost less that a dollar. hope this helps!

Answer: $0.50

Step by Step Explanation:

$4/8 = 0.5

One of Teddy's jobs at home is to pump gas for his family's sedan and truck. When he fills up the sedan with 12 gallons of gas, he notices that it costs him $50.28. How much does one gallon of gas cost? This is also called the unit rate. Explain how you found your answer.​

Answers

Answer:

4.19$

Step-by-step explanation:

If 12 gallons cost 50.28$

then 1 gallon would be (50.28/12)$

which equals to 4.19$

The Teddy's jobs at home is to pump gas for his family's sedan and truck the cost of gas of one gallon is:

=> The unit rate is:

=> $4.19 per gallon

We have the following information available from the question is:

One of Teddy's jobs at home is to pump gas for his family's sedan and truck.

When he fills up the sedan with 12 gallons of gas, he notices that it costs him $50.28.

Now, According to the question:

The cost of gas of one gallon is:

=> The unit rate is:

50.28/12

=> $4.19 per gallon

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Please help answer a-d

Answers

Answer:

a) 4 to the 14th power

b) 12 to the 9th power

c) 5 to the 7th power

d) 7 to the 3rd power

Step-by-step explanation:

a) [tex]4^{6}[/tex] · [tex]4^{8}[/tex] equals 4 to the 14th power.

Using the Product Rule of Exponents:

[tex]a^{m} a^{n} = a^{m+n}[/tex]

You could add the exponents since they have the same base.  

b) [tex]12^{6}[/tex] · [tex]12^{3}[/tex]  equals 12 to the 9th power.

Same Product Rule applies as we did in problem a).

c) [tex]\frac{5^{10} }{5^{3} }[/tex]  equals 5 to the 7th power.

Using the Quotient Rule of Exponents:

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

You'll have to subtract the exponents since they have the same base.

[tex]\frac{5^{10} }{5^{3} } = 5^{10 - 3} = 5^{7}[/tex]

d) [tex]\frac{7^{6} }{7^{3} }[/tex]  equals 7 to the 3rd power.

Same Quotient Rule applies as we did in problem c).

[tex]\frac{7^{6} }{7^{3} } = 7^{6 - 3} = 7^{3}[/tex]

Can you help work question number 4 please?

Answers

Angle C is 76 degrees
Angle D is 52 degrees

Step-by-step explanation:

if 2 sides are equal which means it is an Isosceles triangle

so,

52 + 52 + c = 180

104 + c = 180

c = 180 - 104

c = 76°

d = 52°

hope this answer helps you dear! take care and may u have a great day!

If x= -2, and y=3, then what is the value of
x^3y+ xy3?

Answers

Answer:

4

Step-by-step explanation:

lol

Answer:

-42

Step-by-step explanation:

Hope it helps!

which asymptotes are determined by looking at the denominator

Answers

9514 1404 393

Answer:

  vertical

Step-by-step explanation:

A rational function often tends to infinity when its denominator tends to zero. Thus the zeros of the denominator correspond to vertical asymptotes.


Two rectangular flower beds are set next to each other as shown:
Flowerbed A has length x feet and width that is two feet more then five times it’s length
Write an expression for the area of Flowerbed A:
Expand this expression

Answers

Answer:

area = l x 5l + 2

Step-by-step explanation:

area equals length times 5 times the length plus two

The expression for the area will be equal to x(5x + 2).

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that Flowerbed A has length x feet and width that is two feet more than five times its length

Lenght = x

width = 5x + 2

Area =  L x W

Area = x ( 5x + 2 )

Area = 5x² + 2x

Therefore, the expression for the area will be equal to x(5x + 2).

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Expand and simplify 2(3x - 4) - 2(x - 5)

Answers

Answer:

(6x-8)-(-2x-10)

4x-18

NEED THIS ASAP
If RS = 6.6, find RT:

Answers

Answer:

12.12

Step-by-step explanation:

multiplye them by 2

Violet bought snacks for her team's practice. She bought a bag of popcorn for $3.29 and a 15-pack of juice bottles. The total cost before tax was $27.14. Write and solve an equation which can be used to determine j, how much each bottle of juice costs.

How do you write an equation for this?

Answers

Answer:

popcorn 3.29$

popcorn + 15 pack juice = 27.14$

Step-by-step explanation:

15 pack juice= 27.14-3.29

15 pack juice=23.85

pack of juice=23.85/15

pack of juice=1.59$

The equation that shows the cost of each bottle of juice is 15j + 3.29 = 27.14 and the cost of each juice is $1.59

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Let j represent the cost of each bottle of juice. The total cost before tax was $27.14, hence:

15j + 3.29 = 27.14

j = 1.59

The equation that shows the cost of each bottle of juice is 15j + 3.29 = 27.14 and the cost of each juice is $1.59

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How many x-intercepts would the function shown below have?
f(x) = x²(x + 4)(x + 4)

Answers

Answer: 2

(-4, 0) and (0, 0)

Step-by-step explanation:

does anyone know how to do this?

Answers

Answer:

100

Step-by-step explanation:

I thinks it 100 cuz 15x20= 300 and ⅓ of 300 is 100

15×20 = 300

1/3 × 300 =100

Step-by-step explanation:

15 rows multiplied by 20 seats to find out total number of seats and then you multiply by a third to find one third of the total seats

expres in simplest form:

Answers

Answer:

5x2+8x-6

the 2 is little

Answer:

5[tex]x^{2}[/tex] - 10

Step-by-step explanation:

(3[tex]x^{2}[/tex] + 4x - 8) - (-2[tex]x^{2}[/tex] + 4x + 2) = 3[tex]x^{2}[/tex] + 4x - 8 + 2[tex]x^{2}[/tex] - 4x - 2

                                              = 5[tex]x^{2}[/tex] - 10

Hope this helps :)

please help ill mark brilliant​

Answers

Answer:

2

Step-by-step explanation:

Look at the picture.

Answer: 2

Explanation: :3

Someone help me with this I will make you brain

Answers

The third table would be your answer.

I know this because I turned both equations shown into graph form, this allowed me to see what the x-values of 1, 2, and 3 would have for y-values. My graph of both equations is shown in the picture below. (Green is f(x) = x + 4 and purple is g(x) = -2f(x))

Five students are running for Junior class president. They draw straws to see who will go first, second, etc. In how many different orders could they give their speeches?​

Answers

Answer:  120

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

Explanation:

There are 5 choices for the first selection, 4 choices for the second, etc etc until we reach 1 for the last selection. We have the countdown {5,4,3,2,1}. We'll multiply those values together to get our answer.

5*4*3*2*1 = 120

This operation of starting with some integer, counting down and multiplying along the way, is done so very often that it's given a name which is "factorial". The shorthand notation is to use an exclamation mark. So we'd say 5! = 120

Divide -2 1/9 ÷ 7 3/5. Explain each step you used to find the quotient

Answers

Answer:I am not sure.

Step-by-step explanation:

Which diagram shows only the first step of constructing the line perpendicular to
segment AB through point P?

Answers

Perpendicular lines are lines that meet at 90 degrees.

Diagram (D) shows the first step of constructing the perpendicular line.

To draw a perpendicular line, the first step is to draw two points equidistant to the point at which the perpendicular line will pass.

Assume that the point is P.

The following points represent the position of the two points

                                .   P   .

The diagram that shows this representation is (d)

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Water flows into the tank at a rate of 3 litres per minute.
If the tank fills completely in 450 seconds , What is the capacity of the tank in ml?

Answers

rate = 3l/minute÷60 = 0.05l/s

t = 450s

capacity = ?

rate = c/t

c = rate*t

c = 0.05*450

c = 22.5litres.

c = 22500ml

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