Compared to last year the population of city had decreased by 15% the population is now 6800 what was the population last year?

Answer:

x = 6

Step-by-step explanation:

Given

x + 5 = 11 ( isolate x by subtracting 5 from both sides )

x = 11 - 5 = 6

Answer:

Simplify the expression? Is it:   2 x 10 '' + 707 x   ....?

Answer: It definitely depends  

Step-by-step explanation:

B irrational numbers true or false

Answer:

198 cm³

Step-by-step explanation:

V = π r² h

V = 22/7 × 3² × 7

V = 22/7 × 9 × 7

V = 22 × 9

V = 198 cm³

Answer: B

Step-by-step explanation: a.p.e.x

Answer:

i think u have to use subtraction

Answer:

x = 50

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

subtract the sum of the 2 given angles from 180 for x

x = 180 - (90 + 40) = 180 - 130 = 50

Answer:

55

Step-by-step explanation:

Number of Jone's goats = 550

Let Number of King's goat = x

Jone's goat is 10% more than King's ;

Thus, number King's goat would be ;

x = 550 - (10% of 550)

x = 550 - 55

x = 495

x = Mr. King's goat

Hence, Jones goat is :

550 - 495 = 55 more than Mr King's goat.

Mr King has 55 goats

Number of goats owned by Mr Jones is 550

let y represent the goats owned by Mr King

y= 550-(10% × 550)

= 550- (0.1×550)

= 550 - 55

= 495

= 550-495

= 55

Hence Mr King has 55 goats than Mr Jones

Please see the link below for more information

https://brainly.com/question/20704394?referrer=searchResults

The denominator is the bottom number.

To change the 5 to 10, you would multiply 5 by 2: 5 x 2 = 10

Because you multiplied the 5 by 2, you also need to multiply the numerator ( top number) by the same amount.

1 x 2 = 2

So 1/5 = 2/10

The answer is 2/10

Answer:

:)

Step-by-step explanation:

quiz scores:

a. arrange them all from least to greatest to figure out the median first

your quiz: 15, 16, 17, 18, 19     middle # = 17        median = 17

friend's quiz: 12, 13, 17, 20, 20     middle # = 17       median = 17

now for mean add all of your quiz scores up and divide by how many #s

15 + 16 + 17 + 18 + 19 = 85 / 5 = 17          mean = 17

now your friend's:

12 + 13 + 17 + 20 + 20 = 82 / 5 = 16.4       mean = 16.4

mode is which number is used the most

your mode = you don't have a mode       your friend's mode = 20

b. you have a higher mean than your friend

world populations:

a. range is to subtract the smallest number from the largest

803 - 31 = 772

b. mean is adding it all up and dividing by how many numbers there are:

803 + 487 + 348 + 368 + 730 + 31 = 2767 / 6 = 461.17

median is arranging them in order and finding the middle #

31, 348, 368, 487, 730, 803

368 + 487 = 855 / 2 = 427.5

mean = 461.17

median = 427.5

mode = no mode

tomato plants:

a. range is subtracting the smallest from the largest

52 - 36 = 16

b. mean is adding all the #s and dividing by how many #s there are:

36 + 45 + 52 + 40 + 38 +41 + 50 + 48 = 350 / 8 = 43.75

median is the middle from least to greatest

36, 38, 40, 41, 45, 48, 50, 52

41 + 45 = 86 / 2 = 43

mean = 43.75

median = 43

mode = no mode

hope this helps! :)

Answer:

3

Step-by-step explanation: set the two equations equal to each other. 5-2x=-4x+9 and you'd get x=2. insert 2 into the expression, and you'd get 1. to find the perimeter, a triangle has 3 sides. 1+1+1 =3

Answer:

c = 28

Step-by-step explanation:

2 * 6 -5 = 7

4 * 7 =28

hope it help

plz fo"ow me

Answer:

Number of sent mail = 36

Number of received mail = 75

Step-by-step explanation:

Let,

x be the number of mails sent

y be the number of mails received

According to given statement;

x + y = 111      Eqn 1

y = 2x + 3     Eqn 2

Putting value of y from Eqn 2 in Eqn 1

x + 2x + 3 = 111

3x = 111 - 3

3x = 108

Dividing both sides by 3

[tex]\frac{3x}{3}=\frac{108}{3}\\x = 36[/tex]

Putting x = 36 in Eqn 2

y = 2(36) + 3

y = 72 + 3 = 75

Hence,

Number of sent mail = 36

Number of received mail = 75

Answer:

y = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define

3.6y = 1.6y + 24

Step 2: Solve for y

Step 3: Check

Plug in y into the original equation to verify it's a solution.

Here we have 43.2 does indeed equal 43.2.

∴ y = 12 is the solution to the equation.

Answer:

35.36

Step-by-step explanation:

For Class A

Class A has 11 pupils

The mean score for Class A is 32.

The total score of the students =

Mean score × Number of pupils

= 32 × 11

= 352

For Class B

Class B has 14 pupils. The mean score for class B is 38.

The total score of the students =

Mean score × Number of pupils

= 38 × 14

= 532

Total number of pupils for both classes = (11 + 14)pupils

= 25 pupils

Total score for both class = 532 + 352

= 884

The mean score(rounded to 2DP) in the maths test across both classes is calculated as:

Total score of both classes÷ Total number of pupils

884 ÷ 25

35.36

Answer:

The answer must be C

Step-by-step explanation:

I can explain if you want to, just let me know!

Answer: x= 33

i subtracted -10 away from 56  and i got 66, then i divide 66 by 2x and got 33x.. which is your answer ;)  

Answer:

b

Step-by-step explanation:

Answer Using the method of alligation. 40.0= 20/(10/20) qts of 50% solution to add to your 20 qts of 20% solution. 60.0= (20+40.0) qts of the final 40% solution.

Answer:

2.5 hours

Step-by-step explanation:

it takes 7.5 min to cook each pound, so, take 20 times 7.5 to get the amount of time.

Answer:

 ( 2x +4) ( x+6)

Step-by-step explanation:

Explanation:-

Given expression   2 x² + 16 x + 24

The factors of 48 =  12 × 4

⇒   2 x² + 16 x + 24

⇒    2 x² + 12 x + 4x + 24

⇒   2 x ( x +6 ) + 4( x +6)

⇒   ( 2x +4) ( x+6)

Answer:

$29.14

$86.68

Step-by-step explanation:

$30 before tax

Discount: 20%

100% - 20% = 80% = 0.8

0.8 * $30 = $24 after discount

Tax: 6.4%

100% + 6.4% = 106.4% = 1.064

1.604 * $24 = 25.54 after tax and discount

Tip: 15% = 0.15

0.15 * $24 = $3.60

Total = $25.54 + $3.60 = $29.14

$75 before tax

10% discount

100% - 10% = 90%

90% of $75 = 0.9 * $75 = $67.50 after discount

Tax: 7%

100% + 7% = 107% = 1.07

1.07 * $67.5 = $72.23 after discount and tax

Tip: 20% = 0.2

0.2 * $67.50 = $13.50

Total = $72.23 + $13.50 = $85.73

Answer:

(-2,-1)

Step-by-step explanation:

Answer: 1719.22 mi squared

Step-by-step explanation:

you have to find the height first.

you only have r and hypotenuse

so

a^2 + b^2 = c^2

13^2 + b^2 = 29.1^2

169 + b^2 = 846.81

b^2 = 846.81 - 169

b^2 = 677.81

b = 26.03

height = 26.03

surface area formula :

          _______

πr(r+_/h^2+r^2)

                   ___________

π(13) [13 + _/26.03^2 + 13^2]

= 1719.22