Can some plz help me with this problem

A) 2x+5=9 then if x=1

2+5=9 which is wrong then A is wrong

B) x=2

2×2+5=9

4+5=9

then B is correct

C) x=3

2×3+5=9

6+5=9

then C is wrong

D) 2x+5<9

2×1+5<9

2+5<9

7<9

D is correct

E)x=2

2×2+5<9

4+5<9

9<9

E is wrong

F) x=3

2×3+5<9

6+5<9

11<9

F is wrong

Answer:

n = 5.25

Step-by-step explanation:

6.5 = 1.25 + n

6.5 - 1.25 = 1.25 - 1.25

5.25 = n

Calculation: 2/3 - 1/2 - fraction calculator. The result is 1/6 ≅ 0.1666667 = onesixth. ... Solve problems with two, three, or more fractions and numbers in one ... From a 1 meter ribbon, Ericka cut 2/4 meter for her hat and another 1/4 meter for ...

Answer:

see explanation

Step-by-step explanation:

The dot above the 5 indicates the 5 is repeating , that is

2.7555...

We require 2 equations with the repeating 5 placed after the decimal point.

let x = 2.7555,,, ( multiply both sides by 10 and 100 )

10x = 27.55... → (1)

100x = 275.55... → (2)

Subtract (1) from (2), thus eliminating the repeating 5

90x = 248 ( divide both sides by 90 )

x = [tex]\frac{248}{90}[/tex] = [tex]\frac{124}{45}[/tex]

Answer:

3

Step-by-step explanation:

Answer:

[tex] {x}^{2} - 9 {y}^{2} \\ = {x}^{2} - {3}^{2} {y}^{2} \\ = {x}^{2} - {(3y)}^{2} \\ = (x - 3y)(x + 3y)[/tex]

Answer:

hi people of the 21 century

Step-by-step explanation:

Answer:

arithmetic sequence

Step-by-step explanation:

There is a common difference between consecutive terms , that is

d = 7 - 4 = 10 - 7 = 13 - 10 = 16 - 13 = 3

This indicates the sequence is arithmetic with common difference d = 3

Answer:

the surface area is 133cm.

7 x 7 is 49

7 x 6 is 42.

42 divided by 2 is 21.

21 x 4 is 84

So 84 + 49 is 133.

Answer: 16

Step-by-step explanation:

Answer:

93.8 in

Step-by-step explanation:

9514 1404 393

Answer:

  x ≈ -17.457  or  11.457

Step-by-step explanation:

The distance formula can help.

  d = √((x2 -x1)² +(y2 -y1)²)

Substituting given values, we have ...

  15 = √((x -(-3))² +(9 -5)²)

  225 = (x +3)² +16 . . . . . . . . square both sides

  209 = (x +3)² . . . . . . . . . . . subtract 16

  ±√209 = x +3 . . . . . . . . . take the square root

  -3 ± √209 = x . . . . . . . . subtract 3

  x ≈ -17.457  or  11.457

Answer:

y= 4x -3

Step-by-step explanation:

1) add -8x at both members

8x - 2y - 8x = 6 - 8x

-2y =  -8x + 6

2) divide both members by -2

y = 4x -3

Answer:

300 cm^2

Step-by-step explanation:

The volume of the rectangular prism is calculated by multplying lenght to the widht to the height

20*15*10 = 300 cm^2

Answer:99

Step-by-step explanation:

Devide 297 by 3

Answer:

68

Step-by-step explanation:

Measure of arc = Measure of corresponding central angle

Thus, if the measure of an arc = 68, then the measure of its central angle also = 68

Answer: cost to buy 7.4 pounds of avocados from this store=$17.39

Step-by-step explanation:

Sale of avocados   per pound in the grocery= $2.35  

Sale of 7.4 pounds of avocados=  $2.35  x 7.4 pounds =$17.39

Therefore, the cost to buy 7.4 pounds of avocados from this store=$17.39

Answer:

The sunflower is doing this because it is following the direction of the sun, which is a key factor in photosynthesis.

Step-by-step explanation:

Answer:

a sunflower bends down to East in morning because the sun rises in east. all flowers grows towards the light of the sun. during 12 noon sun is middle of east and west so its growing towards the light at straight way. during 4 o' clock in afternoon became sun goes down to west so the sunflower bends down to the light.

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Explanation:

Let a = 4 and b = 18 be the two known sides of the triangle.

Let c be the remaining side

We'll use a version of the triangle inequality theorem to set up the possible range of values for c.

The range of values for c is determined by the following

b-a < c < b+a

18-4 < c < 18+4

14 < c < 22

Telling us that the third side c is between 14 and 22, excluding both endpoints. This means c = 14 and c = 22 are not allowed. If either value were to happen, then the triangle becomes a single line instead. Try it out with slips of paper.

Because c = 14 is not allowed, we must go to the next whole number up. Therefore, c = 15 is the smallest possible length for the third side, when the third side is a whole number.

If the third side wasn't a whole number, then we could have something like c = 14.1 or c = 14.01 or c = 14.001 or c = 14.0001, and so on. We could steadily get closer and closer to 14, but never actually arrive to it. In short, there is no "smallest third side". This is likely why your teacher is focusing on the whole numbers so there is a smallest value of c possible.

Extra info: As you can probably guess, the largest side possible is c = 21, which is one less than 22. Like above, this is only possible if c is a whole number.

Answer:15

Step-by-step explanation: i got it right

Answer:

2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Slope = Change in y over change in x

Looking at the graph, as y goes up 4 x goes up 2

Thus, slope = 4/2 or 2

Answer:

0≤t≤10

Step-by-step explanation:

The domain of this function is the values of  that will make the function defined.

The least value for t is zero.

The highest value is ten.

The function is defined on the interval 0≤t≤10

The correct choice is  B

Answer:

C

Step-by-step explanation:

I hope that's right. It should be

Answer:

Your answer is 156

Step-by-step explanation:

300*.52=156

Answer:

Mean= Summation /number of terms

= 48/8

=6.

Median

To do this

arrange all terms from smallest to biggest

That is

2,4,4,5,7,8,9,9

The two middle numbers are

5 and 7.

To get the median

add both and divide by 2

5+7 = 12... 12/2 =6

Median=6

Mode.... This is the number that appears most

Mode = 4 and 9.(Bimodal) Both appear equally.

Range: Highest - Lowest

= 9-2 =7.

Answer:

mean = 6 median = 6 mode 9 and 4 range = 7

Step-by-step explanation:

mean = 2+4+4+5+7+8+9+9÷ 8 = 6

median = 5+7÷2

mode = 9 and 4

range = 9-2=7

Answer:

the human right movement was leaded by my father who if very good at his job

Step-by-step explanation:

GFI = GI arc ==》 GI arc = x + 42

_________________________

GHI = GI arc ÷ 2

==》 x - 9 = ( x + 42 ) ÷ 2

Multiply both sides by 2

==》2 × ( x - 9 ) = 2 × ( x + 42 / 2)

==》 2x - 18 = x + 42

Add both sides 18

==》 2x - 18 + 18 = x + 42 + 18

==》 2x = x + 60

Subtract both sides x

==》 2x - x = x - x + 60

==》 x = 60

_________________________________

GHI = x - 9

GHI = 60 - 9

GHI = 51

1.

a) metres to centimetres :

multiply length by 100

b) metres to millimetres:

multiply length by 1000

c) kilograms to grams:

multiply the mass value by 1000

d) litres to millilitres :

multiply volume by 1000

2.

a) 3 m = 3× 100 = 300 cm

b) 28 cm = 28 × 10 = 280 mm

c) 2.4 km = 2.4 × 1000

= 24 × 10^-1 × 10^3

= 24 × 10^2 =2400 m

d) 485 mm =485 / 10

= 485 / 10 ^1

= 485 × 10 ^-1

= 48.5 cm

e) 35 cm = 35 / 100

= 35 /10^2

= 35 × 10 ^ -2

= 0.35 m

f) 2.4 m = 2.4 / 1000

= 24 × 10 ^-1 / 10^3

= 24 × 10^-1 × 10 ^-3

= 24 × 10 ^ -4

= 0.0024 km

g) 2495 mm = 2495 /1000

= 2495 /10^ 3

= 2495 × 10 ^-3

=2.495 m

Answer:

180 meters squared

Step-by-step explanation:

Answer:

180m²

Step-by-step explanation:

Answer:

40.5

Step-by-step explanation:

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A. when x = 5, find 2x

B. when y = -3, find 4y

C. when z = 1.2, find 3z

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