is -1/4 a rational number

Answer:

nice!

Step-by-step explanation:

Answer:

its C

Step-by-step explanation:

The area of a regular hexagon is 288 square units, which is option C.

A hexagon is a six-sided polygon. And a regular hexagon means, the hexagon's sides are equal.

And no interior angle has an angle measuring more than 120°.

As per the given information, we can create 6 equal size triangles.

For that find the length of the apothem,

As per Pythagoras' theorem,

Apothem = √(10)² - (6)² = √(64) = 8.

Now, the area of the regular hexagon can be described as,

S = 6 x 1/2 x 12 x 8

S = 288 square units.

Therefore, the area of the required hexagon is 288 square units.

To learn more about the hexagon;

https://brainly.com/question/16615236

#SPJ2

Answer:

4

Step-by-step explanation:

8/2=4

Answer:

Thank for the help

Step-by-step explanation:

Answer:

now using the formula (a-b) (a2+ab+b2)=a3-b3

=>x3-63

x3-216#answer

The factor of the cubic polynomial x³ + 216 will be (x + 6) and (x² – 6x + 36). Then the correct option is B.

It is a method for dividing a polynomial into pieces that will be multiplied together. At this moment, the polynomial's value will be zero.

The cubic polynomial is given below.

⇒ x³ + 216

Then the cubic polynomial is written as,

⇒ x³ + 6 × 6 × 6

⇒ x³ + 6³

We know that the formula of a³ + b³ is given as,

a³ + b³ = (a + b)(a² – ab + b²)

Compare the expression, we have a = x and b = 6. Then the expression will be

x³ + 6³ = (x + 6)(x² – 6x + 6²)

x³ + 6³ = (x + 6)(x² – 6x + 36)

The factor of the cubic polynomial x³ + 216 will be (x + 6) and (x² – 6x + 36).

Then the correct option is B.

More about the factorization link is given below.

https://brainly.com/question/6810544

#SPJ5

Answer:

B

Step-by-step explanation:

120/60=2

2 hours

The time required in minutes to set the sterilizer is 120. The correct option is B.

The mathematical expression is the combination of 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 be used to denote the logical syntax's operation order and other properties.

Given that you work in a hospital, instructions for an instrument state that it should be cleaned in the sterilizer for two hours.

The time in minutes will be calculated as:-

Time = 2 hours

Time = 2 x 60 minutes

Time = 120 minutes

Therefore, the time required in minutes to set the sterilizer is 120. The correct option is B.

To know more about an expression follow

https://brainly.com/question/11096532

#SPJ2

Answer:

0.2857

Step-by-step explanation:

We define the time it takes to do these dishes to be uniformly distributed between the time 5 minutes and 12 minutes.

a = 5 minutes

b = 12 minutes

Probability of tonight's dish washing being between 6 and 8 minutes

P(6<X<8)

= 8-6/b-a

= 2/12-5

= 2/7

= 0.2857

The probability it will be better 6 and 8 minutes is therefore 0.2857

Answer:

Most number lines have left be negative and right be positive. Hence, -3, which is more positive than -4, would be to the right of -4.

Step-by-step explanation:

Answer:

Complementary, x=78

Step-by-step explanation:

90= (x-8)+20

complementary angles add up to 90 degrees.

Answer:

Complementary, x is 78

Step-by-step explanation:

Let's first define what complementary and supplementary angles are. Complementary angles add up to 90 degrees, and supplementary add up to 180. From this image, we can see that this is a right angle. Right angles add up to 90 degrees, therefore, this is a complementary angle.

Now, because we know that it is 90 degrees and that (x-8)+(20) = 90, then we can solve for x. However, if the angle is unknown, then we would do x-8=20. In this case, sense we know for sure this angle is complementary, we do

(x-8)+(20) = 90

X+12=90 We combined like terms

X=78 Inverse operations

You can plug 78 into x and check to see if it is correct if they are 90 degrees total.

Step-by-step explanation:

{

x

=

1

y

=

4

Explanation:

Take a look at your starting system of equations

{

5

x

+

y

=

9

10

x

−

7

y

=

−

18

Notice that if you multiply the first equation by

(

−

2

)

, and add the right-hand sides and the left-hand sides of the equations separately, you can eliminate the

x

-term.

This will leave you with one equation with one unknown,

y

.

{

5

x

+

y

=

9

∣

⋅

(

−

2

)

10

x

−

7

y

=

−

18

{

−

10

x

−

2

y

=

−

18

10

x

−

7

y

=

−

18

---------------------------------------------------

−

10

x

−

2

y

+

10

x

−

7

y

=

−

18

+

(

−

18

)

−

9

y

=

−

36

⇒

y

=

(

−

36

)

(

−

9

)

=

4

Now use this value of

y

in one of the two original equations to find the value of

x

5

x

+

(

4

)

=

9

5

x

=

5

⇒

x

=

5

5

=

1

Answer:

90!

Step-by-step explanation:

even, ends in zero, and 9 times ten! :)

Answer:

she can buy 7 t shirts or x ≤ 7

Step-by-step explanation:

90 minus 27 = 63

63 divided by 9 = 7

Answer:

x<7  (x is less than or equal to 7)

(A)

Step-by-step explanation:

The required equation of the line with slope 1/3 is y = 1/3x + 1 shown in the graph B. Option B is correct.

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.

here,
Locate two points on each graph and put the values of the points in the following formula of the slope,

M = (y₂ - y₁) /  (x₂ - x₁)

So, in the graph B we have point (-3,0) and (0, 1)

So slope will be,
m =  1 - 0 / 0 + 3
m = 1/3

Thus, the required equation of the line with slope is y = 1/3x + 1.

Learn more about slopes here:
https://brainly.com/question/3605446

#SPJ2

Answer:

decimal - 0.875

percent - 87.50%

Step-by-step explanation:

Answer:

a=70 b=.16 c=350

Step-by-step explanation:

50 messages is 8 dollars

Answer:

To make it easier, I'm gonna label each angle. Let's say that the angle you already know is angle A.

Angle A: 42

Angle B: 138

Angle C: 42

Angle D: 138

Step-by-step explanation:

If this isn't the kind of answer you needed, let me know.

Answer:

i belive its 19/33

Step-by-step explanation:

Answer:

I think it's the first one... but I'm not pretty sure.

Answer:

C

Step-by-step explanation:

edge 2020

Answer:

I believe it's 8 degrees

Step-by-step explanation:

if x=8, then the angle of S would equal 8 degrees

Answer:

who the holy christmas is ily

Step-by-step explanation:

maybe you call your dog that

wait do you have a dog?

anyways

thanks for the points

Answer:

Linear Equation: A linear equation is an algebraic equation. · 2. Polynomial Equation: · 3. Quadratic Equation: · 4. Trigonometric equation: · 5. Radical Equation:

Step-by-step explanation:

Answer:

I don't have algebra but I suggest looking it up and it might show you at the very top.

Step-by-step explanation:

Hope this helps you:)

Answer:

B

Step-by-step explanation:

Y=mx=b

m= slope

b= y- intercept

x&y are variables

Answer:

y+8.1<24

Step-by-step explanation:

Sum of= addition

y+8.1

less than is <

<24

Answer:

50 $20 bills equals $1,000

Step-by-step explanation:

1000 / 20=50

50 $20 bills equal $1000

The unitary method is a method in which you find the value of a unit and then the value of a required number of units.

Given here $1000 bill to find its $20 equivalent we divide the amount with 20 thus $20 equivalent of $1000 is  $1000/20=50

Hence, $1000 bill equivalent of $20 is 50

Learn more about the unitary method here:

https://brainly.com/question/22056199

#SPJ2

Answer: 27.00

Step-by-step explanation:

$50 - $23 = $27

Answer:

$27.00

Step-by-step explanation:

"D"