which of the following polynomials have no roots?

Answer:

-6 a b + b + a

Step-by-step explanation:

Simplify the following:

-(a - b + a b) - a b - 4 a b + 2 b - 2 b + 3 a - a

Hint: | Group like terms in 3 a - 2 b - a b - (a b - b + a) - 4 a b + 2 b - a.

Grouping like terms, 3 a - 2 b - a b - (a b - b + a) - 4 a b + 2 b - a = -(a b - b + a) + (-a b - 4 a b) + (3 a - a) + (2 b - 2 b):

-(a b - b + a) + (-a b - 4 a b) + (3 a - a) + (2 b - 2 b)

Hint: | Combine like terms in -a b - 4 a b.

a b (-1) + a b (-4) = -5 a b:

-(a b - b + a) + -5 a b + (3 a - a) + (2 b - 2 b)

Hint: | Combine like terms in 3 a - a.

3 a - a = 2 a:

-(a b - b + a) - 5 a b + 2 a + (2 b - 2 b)

Hint: | Look for the difference of two identical terms.

2 b - 2 b = 0:

-(a b - b + a) - 5 a b + 2 a

Hint: | Distribute -1 over a b - b + a.

-(a b - b + a) = -a b + b - a:

-a b + b - a - 5 a b + 2 a

Hint: | Group like terms in -a b - 5 a b + b + 2 a - a.

Grouping like terms, -a b - 5 a b + b + 2 a - a = (-a b - 5 a b) + b + (-a + 2 a):

(-a b - 5 a b) + b + (-a + 2 a)

Hint: | Combine like terms in -a b - 5 a b.

a b (-1) + a b (-5) = -6 a b:

-6 a b + b + (2 a - a)

Hint: | Combine like terms in 2 a - a.

2 a - a = a:

Answer: -6 a b + b + a

Answer:

9 hours

Step-by-step explanation:

All we need to do is subtract 40 from 85, giving us 45.

Then we divded 45 by 5 (degrees an hour) to get 9.

So 9 hours is our answer.

Answer:

7.45645 miles

Step-by-step explanation:

12 divided by 1.609 equals 7.45645

You divide 12 kilometers by to get miles.

Jordan has to race 7.45645 miles.

The same attribute is expressed using a unit conversion, but in a different unit of measurement. For instance, time can be expressed in minutes rather than hours, and distance can be expressed in kilometres, feet, or any other measurement unit instead of miles.

Given:

Jordan wants to run a 12-kilometer race.

We know 1 Km= 0.621371 miles

So, To convert 12 Km into miles

12 Km = 12 x 0.621371

            = 7.45645 miles

Hence, Jordan has to race 7.45645 miles.

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Answer:

2.5

Step-by-step explanation:

20/8

Answer:

1. 0.4

2. 2.5

Step-by-step explanation:

Answer:

5 TRIPS

Step-by-step explanation:

Answer:

The area of a rectangle is l x w. So the area of the square is 10 x 10 = 100

The area of a circle is

[tex]\pi \times {r}^{2} [/tex]

The radius of all the circles is 2 inches.

[tex]\pi \times {2}^{2} = \pi \times 4 \: or \: 4\pi[/tex]

There are 4 circles so the area of all four is

[tex]4 \times (4\pi) \: or \: 16\pi[/tex]

To find the area of the shaded part of the square, subtract the area of all the circles, because they are not shaded, from the area of the square, because it is shaded. The difference will be the area of the shaded portion.

[tex]area \: = 100 - 16\pi[/tex]

[tex]area = 100 - 50.6548[/tex]

So the area is approximately 50 Sq in

Answer:

8(x-3)+7=2x(4-17)

8(x-3)+7=2x(-13)            -13, not 13

8x-24+7=-26x               -26x, not 26x

8x-17=-26x

34x=17

x=17/34=1/2               positive 1/2, not -1/2

After dividing 96 by 72 the value obtained in fraction will be equal to 4/3.

The four fundamental operations of arithmetic are addition, subtract, multiply, and division of two or more numbers. Included in them is the study of integers, especially the order of operations, which is important for all other aspects of mathematics, notably algebra, information management, and geometry.

As per the given data provided in the question,

Fraction after dividing 96 by 72

So,

96/72 = 4/3

Also, the value in decimal form is 1.33.

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Your complete question probably be:

What is 96 divided by 72 in a fraction?

Answer AND expaination

The product of a number and 3 increased by 5 is 7 less than twice the number which equation can be used to find this number , n?

its -7

the product of a number and 3: 3n

increased by 5: + 5

7 less than: - 7

twice the number: 2n

That gives us the following:

3n + 5 = 2n - 7

You only asked for the equation, not to actually help you solve for n, for note. If you do, just subtract 2n from both sides, and then subtract 5 from both sides.

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Answer:

here i did it i think sorry if im wrong

Step-by-step explanation:

The product of a number and 3 increased by 5 is 7 less than twice the number

Answer:

yes

Step-by-step explanation:

yes because parallelogram are a flat shape with opposite sides parallel and equal in length. 

Answer:

17 is your answer

Step-by-step explanation:

Answer:

coin us the right anwser

Answer:

Step-by-step explanation:

The number of Bacteria, B(t) at any time t(in minutes) is given by the function:

We want to determine the time(in minutes) for the culture to achieve 10,000 bacteria.

Therefore:

Divide both sides by 100

good luck

Answer:

where is the Triangle below

Answer:

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

         A2 - AB + BA - B2 =

         A2 - AB + AB - B2 =

         A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 16 is the square of 4

Check :  x4  is the square of  x2 

Factorization is :       (x2 + 4)  •  (x2 - 4) 

Equivalent expressions are expressions with equal values

The equivalent expression of [tex]\mathbf{x^6 - 16x^2}[/tex] is [tex]\mathbf{x^2(x + 2)(x - 2)(x^2 + 4)}[/tex]

The expression is given as:

[tex]\mathbf{x^6 - 16x^2}[/tex]

Factor out x^2

[tex]\mathbf{x^6 - 16x^2 = x^2(x^4 - 16)}[/tex]

Express x^4 as (x^2)^2

[tex]\mathbf{x^6 - 16x^2 = x^2((x^2)^2 - 16)}[/tex]

Express 16 as 4^2

[tex]\mathbf{x^6 - 16x^2 = x^2((x^2)^2 - 4^2)}[/tex]

Apply difference of two squares

[tex]\mathbf{x^6 - 16x^2 = x^2((x^2 - 4)(x^2 + 4))}[/tex]

Express 4 as 2^2

[tex]\mathbf{x^6 - 16x^2 = x^2((x^2 - 2^2)(x^2 + 4))}[/tex]

Apply difference of two squares

[tex]\mathbf{x^6 - 16x^2 = x^2(x + 2)(x - 2)(x^2 + 4)}[/tex]

Hence, the equivalent expression of [tex]\mathbf{x^6 - 16x^2}[/tex] is [tex]\mathbf{x^2(x + 2)(x - 2)(x^2 + 4)}[/tex]

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Answer:

B

Step-by-step explanation:

17.3&

Answer:

khshsbdjudbdhdhdhgdhshsh

Answer:

Call ruses crig

Step-by-step explanation:

Answer:

C. 500

Step-by-step explanation:

15% OF 500 is 75

Step-by-step explanation:

first of all we should add , division then answer will come

Answer:Given cot A = 3 over 7 and that angle A is in Quadrant I, find the exact value of cos A in simplest radical form using a rational denominator ... √58=c. cos = 3/√58 To rationalize, multiply the numerator and denominator by √58 ... how do i go about solving a trig identity; that simplify s 1-sin^2 theta/1-cos theta.

Step-by-step explanation:

The value of sin A is [tex]\frac{2\sqrt{29} }{29}[/tex].

The sine of an angle is the trigonometric ratio of the opposite side to the hypotenuse of a right triangle containing that angle.

The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

According to the given question.

We have [tex]cotA = \frac{5}{2}[/tex]

⇒[tex]tanA = \frac{2}{5}[/tex]

From the definition of tangent of an angle.

In  right angled triangle PQR, we can say that

PR = 2 and  RQ = 5

Therefore,

[tex]x^{2} = (PR)^{2} +(RQ)^{2}[/tex]

⇒[tex]x^{2} =(2)^{2} +(5)^{2}[/tex]

⇒[tex]x^{2} = 4 + 25[/tex]

⇒[tex]x^{2} = 29[/tex]

⇒[tex]x = \sqrt{29}[/tex]

Since,

Sine of an angle = opposite side/ Hypotenuse

In triangle PQR

The opposite side w.r.t angle A is PR.

And the hypotenuse is PQ.

Therefore, sine of an angle A is given by

[tex]sinA= \frac{2}{\sqrt{29} }[/tex]

⇒[tex]sinA = \frac{2}{\sqrt{29} } \frac{\sqrt{29} }{\sqrt{29} }[/tex]

⇒[tex]sinA = \frac{2\sqrt{29} }{29}[/tex]

Hence, the value of sin A is [tex]\frac{2\sqrt{29} }{29}[/tex].

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Answer:

its 24.2

Step-by-step explanation:

Answer:

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ㅓㅕ혀려려려려려려혈

Step-by-step explanation:

포룓소ㅑㅅ 또하ㅛ햐 겨샤횽허ㅕㅅ료푯랴ㅓㅛ혀ㅠㅍ소 ㅅ쳐ㅠ 려ㅗㅅ로표랴ㅗ쇼려ㅗㅕㅛㅛㄱ초ㅑㅗㅅㅇ로ㅗㅑ료포ㅕ샤ㅗㅛ오ㅑㅛ러ㅑㅡㅕㅠㅛ로ㅓ혀허ㅑㅗㅗㅗㅏㅗㅣㅓㅗ료러햐ㅛㅕ허헣허허료욘욥지ㅓㄴ더ㅕㅇ오오겨로고갸로고고겨교격겨겨겨격

Answer:

CD = 15

x = 5

Step-by-step explanation:

Since BF ≅ FD and AE ≅ EC, then [tex]EF = \frac{AB + CD}{2}[/tex]

So, [tex]30 = \frac{x^{2} +20 + x^{2} + 22x - 120}{2}[/tex]

[tex]60 = 2x^{2} + 22x - 100[/tex]

[tex]2x^{2} + 22x - 160 = 0[/tex]

[tex]2(x^{2} + 11x - 80) = 0[/tex]

2(x - 5)(x + 16) = 0

x = 5  or x = -16

If x = 5, then CD = [tex]5^{2} +22(5) - 120 = 25 + 110 - 120 = 15[/tex]  

Ix x = -16, then CD = will be a negative number which it cannot be.

Answer:

y = -4.2

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

Answer:

180%

Step-by-step explanation:

well 1 = 100%.

4/5 can get up to 100 if you multiply by 20/20. so 4/5 x 20/20 is 80/100 or 80%

100% + 80% is 180%

Answer:

d

Step-by-step explanation:110-16 + 10h

Answer:

6x9= what you can be slow

Step-by-step explanation:

Answer:

A. f(x) = (one-half) Superscript x  

D. The domains of both functions are the same.

E. The translation from f(x) to g(x) is right 4 units and down 2 units.

The answers are A, D, and E

Step-by-step explanation:

Edge 2020

The statements about the functions are true A. [tex]f(x) = (1/2)^x[/tex]

D. The domains of both functions are the same.

E. The translation from f(x) to g(x) is right 4 units and down 2 units.

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s range(involving values of y) or in it’s domain(involving values of x).

We are given that On a coordinate plane, 2 exponential functions are shown. f (x) decreases in quadrant 2 and approaches y = 0 in quadrant 1.

When evaluated in zero we have:

f(0) = 2(1/2)^0 = 2

So it crosses through the point (0, 2).

And when evaluated in x = 1, then

f(1) = 2(1/2)^1 = 1

Then it also passes through (1, 1).  It goes crosses the y-axis at (0, 14) and goes through (1, 5) and (2, 2).

The answers are A, D, and E

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Answer:

Step-by-step explanation:

Answer:

4x5=20

Step-by-step explanation:

2,4,6,8,10,12,14,16,18,20

If that's what you are asking.