This table shows the population of a city every ten years since 1970. Years Since 1970 Population (In thousands) у 489 27. Find the best-fitting quadratic model for the data. Round to 3 decimal places. 0 10 801 20 1.202 30 28. 1,998 Using this model, what will be the estimated population in 2020? 40 2,959​

Answer:

( 2 − 1 ) ( 3 + 2 )

Step-by-step explanation:

6 ² + − 2

6x² + 4 - 3 -2

2 ( 3 + 2 )− 1 ( 3 +2 )

( 2 − 1 ) ( 3 + 2 )

Answer:

okay

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

2/3 ÷ 1/6 =

2/3 x 6/1 =

12/3 = 4

Also you can do:

2/3 = 4/6

there are 4- 1/6 in 4/6

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

12/2/3x43

Step-by-step explanation:

Answer:

I = 32

Step-by-step explanation:

4.48 divided by .14 = 32

Answer:

jdhsvsvsjqkwsbs sbwjwisnsbbß

Answer:

The value of the line segment [tex]ED[/tex] is 36.

Step-by-step explanation:

The hypotenuse represents the longest side in the right triangle. In this case, FD represents the hypotenuse as it is a multiple of 13. Based on the trigonometric relations described in the statements, we get the following relationships by definition of cosines:

[tex]\cos D = \frac{ED}{FD}[/tex] (1)

[tex]\cos F = \frac{EF}{FD}[/tex] (2)

If we know that [tex]\cos D = \frac{12}{13}[/tex] and [tex]FD = 39[/tex], then the length of the line segment [tex]ED[/tex] is:

[tex]ED = FD\cdot \cos D[/tex]

[tex]ED = 39\cdot \left(\frac{12}{13} \right)[/tex]

[tex]ED = 36[/tex]

The value of the line segment [tex]ED[/tex] is 36.

Answer:

1.  X= 4

2.  X= 1

3. X= 3

4. X= 5

5. X= 7

6. X= -3/4

7. X= 6

8. X= 5

Step-by-step explanation:

Answer:

Look below :)

Step-by-step explanation:

1.x=4

2.×=1

3.x=3

4.x=5

5.x=7

6.x=-0.75

7.x=6

8.x=5

Hope this helps :)

Answer:

Volume of a cylinder = πr²h

Given

V=81π

r=3

find h

Making h the subject

h= V/πr² = 81π/π(3)²

h= 81/9

h= 9cm

Answer:

5.44444442889 or 5 [tex]\frac{4}{9}[/tex]

Step-by-step explanation:

Just multiply the 2 numbers together

Answer:

[tex]2\frac{1}{3}^{2}[/tex] or 49/9 inches squared

Step-by-step explanation:

you have a square if those lengths are correct, and the formula for the area of a square is Bh=A B=base length (side on bottom), h=height (vertical side), and A=area, so 2 1/3 * 2 1/3 or 2 1/3^2

if that doesnt make sense, message me and i will try to help you more

No, this comparison is not reasonable.

This is the comparison given,

[tex]2.5 = 2.05[/tex]

Now,

[tex]2.5 = 2.50[/tex]

We know that,

[tex]2 .50 > 2.05[/tex]

So,

[tex]2.50 ≠ 2.05 \\ •°• \: 2.5 ≠ 2.05[/tex]

⎇ Hence, the comparison is not reasonable.

11. brother = ???  

???- 12 = 14

14+12=26

brother is 26.

12. 21.35 - 8.95 = 12.4

cost of colored pencils = $12.40

13. 37- 8 = 29

14. $95  - $73 = $22

Answer:

b. option Is the correct answer

Answer:

X=12

Step-by-step explanation:

Khan Academy

Answer:

120.8°

Step-by-step explanation:

the total angle sum is of 360 so we add and subtract

35.8+25.4+178= 239.2

360-239.2= 120.8

so the missing angle measure is 120.8°

Answer:

5 apples cost = 150 /-

Step-by-step explanation:

Two apples cost = 60 /-

Then 1 apple cost = 60 ÷ 2

= 30

∴ 1 apple cost = 30 /-

Then 5 apples cost = 30 × 5

= 150

∴ 5 apples cost = 150 /-

Answer:

The equation for the speed of the train is: 162 = 3x

I think the speed of the train is 54 miles per hour

Step-by-step explanation:

We know that:

y = distance in miles

x = speed of train (miles/hour)

t = time traveled from the departing station (hours)

The equation: y = xt is given, we can therefore substitute the give values:

y = xt or tx

162 = 3x (This would be the equation)

Now we can find x by diving 3 on both sides of "="

162/3 = x

54 = x (This would be the speed of train)

Hope this helps!

Answer:

2/25

Step-by-step explanation:

It will be 20/400 + 12/400

=2/25

Answer:

2/25

Step-by-step explanation:

Answer:

192

Step-by-step explanation:

Volume of triangular prism = area of base * length

The base of the triangular prism is a triangle

The area of a triangle can be calculated by multiplying the base length by the height and dividing that by 2

The base has a base length of 4m and a height of 8m

So area of base = [tex]\frac{4*8}{2}[/tex]

4 * 8 = 32

32 / 2 = 16

So the area of the base is 16m²

The prism has a length of 12m and we have identified that the area of the base is 16 so volume = 12 * 16

12 * 16 = 192

So the volume of the triangular prism is 192m³

Answer:

192 m^3

Step-by-step explanation:

V = 1/2 * 4 * 8 *12

V = 1/2 * 384

V = 192

Hope this helps!

Answer:

3^-2=1/9

3^0=1

3^1=3

3^2=9

Answer:

3^-2 = 1/9

3^0 = 1

3^1 = 3

3^2 = 9

Answer:

48pq².

Step-by-step explanation:

(4pq+3q)² - (4pq - 3q)²​

This is the difference of 2 squares so we can use the identity

a^2 - b^2 = (a - b)(a + b):

(4pq+3q)² - (4pq - 3q)²​

= (4pq + 3q - (4pq - 3q)(4pq + 3q + (4pq - 3q)

= (4pq + 3q - 4pq + 3q)(4pq + 3q + 4pq - 3q)

= 6q * 8pq

= 48pq².

Answer:

48pq²

Step-by-step explanation:

As we know,

(a + b)² = a² + 2ab + b²

and

(a – b)² = a² – 2ab + b²

So,

(4pq+3q)² - (4pq - 3q)²​

= [(4pq)² + 2 X 4pq² X 3q + (3q)²] – [(4pq)² -  2 X 4pq² X 3q + (3q)²]

= (16p²q² + 24pq²+ 9q²) – (16p²q² – 24pq²+ 9q²)

= 16p²q²+ 24pq²+ 9q² – 16p²q²+ 24pq² – 9q²

= 24pq² + 24pq²

= 48pq²

Answer:

Decimal form: 2.07

Step-by-step explanation:

Answer:

(9-57i)

Step-by-step explanation:

We need to find the product of the given complex number i.e.

(3-9i)(6-i)

It can be solved as follows :

(3-9i)(6-i) = 3(6) +3(-i) +(-9i)(6) + 9i(i)

= 18-3i-54i+9i²

We know that, i² = -1

So,

= 18-3i-54i+9(-1)

= 18-57i-9

= 9-57i

So, the product of the given complex number is (9-57i).

Answer:

3 1/4 hours

Step-by-step explanation:

1 hour + 1/4 hour + 3/4 hours = 2 hours

3/4 hour + 2/4 hour = 1 1/4 hours

2 hours + 1 1/4 hours = 3 1/4 hours

Answer: 9

Step-by-step explanation:

11 2/4 - 2 1/2

46/4 - 5/2

23/2 - 5/2

=18/2= 9

Answer:

C. it is not a function

Step-by-step explanation:

It fails the horizontal and vertical line test.

To pass the horizontal line test [injective]: must not hit a horizontal line passing through more than once.

To pass the vertical line test [function]: must not hit a vertical line passing through more than once.

Answer: 639

Step-by-step explanation:

Multiple

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