This is 8th grade math please help will give brainliest if correct.

Answer:

In 2012 the population of the city reach 457 thousand.

Step-by-step explanation:

We are given with equation A= 265[tex]e^{0.039t}[/tex]

Here it is given that A is 457.

So, plug in A as 457 and solve for 't'.

457= 265[tex]e^{0.039t}[/tex]

Divide both sides by 265.

1.7245283 =[tex]e^{0.039t}[/tex]

Now, take natural log on both sides,

ln(1.7245283)= ln([tex]e^{0.039t}[/tex])

0.5449535= 0.039t

Divide both sides by 0.039

t=13.97...

So, 't' is years after 1998.

So, 1998+13.97 =2011.97...

If we round to nearest years, we do get 2012.

Answer:

[tex]volume = \frac{1}{3} \pi {r}^{2} h \\ but \: h = 7 \tan(50 \degree) \\ h = 8.34 \: ft \\ volume = \frac{1}{3} \times 3.146 \times {(7)}^{2} \times 8.34 \\ volume = 428.55 \: cubic \: ft[/tex]

The function C represents a parabola that opens downward and intersects the x-axis at (3,0) and (-4,0). Option C is correct.

A function is a statement, rule, or law that establishes the connection between two variables. In mathematics, functions are everywhere and are necessary for constructing physical connections.

The general parabola equation is as follows: y=p (x-h)²+k or x=p(y-k)²+h, with (h,k) indicating the vertex.

The equation of the parabola is;

y=p (x-3)²+0

y=p(y-0)²+ (-4)

On combining both the equations;

f(x) = 8 (x-3) (x+4)

The function C represents a parabola that opens downward and intersects the x-axis at (3,0) and (-4,0).

Hence,option C is correct.

Learn more about the function link.

https://brainly.com/question/5245372

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Answer:

(23*2)+s

Step-by-step explanation:

Answer:

2(23+s)

Yep there ya goo

Answer: The answer is the 3rd option.... if not then it’s the fourth! They both seem correct!

Step-by-step explanation:

answer:

d) pick every 10th student who is listed on the student role for the school **you chose the correct answer**

step-by-step explanation:

'd' is the correct answer because it's the best way to survey the most amount of students

:)

!

Answer:

50

Step-by-step explanation:

Answer:

log₃(243) = x

Step-by-step explanation:

3^x = 243

Rule: a^x = b -> logₐ(b) = x

log₃(243) = x

Answer:

B)

Step-by-step explanation:

slope = 1/2(rise/run)

Answer:

I cant figure it out, sorry :(

Time (min) Distance (km)

2 6

6 18

8 24

15 45

HOPE IT HELPS YOU........

Answer: 35 trading cards

Step-by-step explanation:

Assume the trading cards collected by Trey is x.

That means that the number of trading cards collected by Abigail is 7x.

Relevant expression is:

7x + x = 40

8x = 40

x = 40/8

x = 5 trading cards

This means that Trey collected 5 trading cards

Abigail collected 7 times that figure so Abigail collected:

= 7 * 5

= 35 trading cards

Answer:

38.16

Step-by-step explanation:

cosine = adjacent leg / hypotenuse

34 / x = cos 27

x = 34 / cos 27 deg

x ≈ 38.16

Answer:

we have

cos 27°=base/hypotenuse

cos27°=34/x

x=34/cos27°= 38.16is your answer

Answer:

x = 2v-3y

Step-by-step explanation:

x+3y=2v

x = 2v - 3y    [  rearrange and transpose 3y to the other side making it negative]

I hope im right!

Answer:

8

Step-by-step explanation:

Deer = snow flake = 4

4 + 4 + 4 = 12

Dear - 3 = 1

Snowman = 1

Tree = 8

8 + 1 (snowman) + 8 = 17

Answer:-5-6

Step-by-step explanation:

Answer:

7/4 = 35/20

Step-by-step explanation:

35 = 7 x 5 ; 20 = 4 x 5

Answer: [tex]80.2\ ft[/tex]

Step-by-step explanation:

Given

Zipline begins [tex]h=46\ ft[/tex] in the air

The angle of elevation is [tex]35^{\circ}[/tex]

Assume the length of the cable is l

from the figure, we can write

[tex]\Rightarrow \sin 35^{\circ}=\dfrac{46}{l}\\\\\Rightarrow l=\dfrac{46}{\sin 35^{\circ}}\\\\\Rightarrow l=80.19\approx 80.2\ ft[/tex]

Step-by-step explanation:

From Pythagorean theorem

x^2 = (10)^2 - (8)^2 = 36 or x =6

sin theta = opp/hyp = 6/10 = 3/5

cos theta = adj/hyp = 8/10 = 4/5

tan theta = opp/adj = 6/8 = 3/4

cot theta = 1/tan theta = 4/3

sec theta = 1/cos theta = 5/4

csc theta = 1/sin theta = 5/3

Answer:

yes.

Step-by-step explanation:

Answer:

C is a function

Step-by-step explanation:

For every input in a relation, there should only exist one unique output. For example, in option A, the input 1 has 3 outputs which does not make it a function since they all have to be unique. Additionally, B and D aren't functions for the same reasons. Therefore, C is a function.

Answer:

692 ft^2

Step-by-step explanation:

Area of a circle = (pi)(radius)^2

Here,

Area of the circle = (3.14)(21 ft)^2 = 1385 ft^2

Area of half this circle = area of the semicircle = 1385 ft^2  /  2, or

Area of semicircle = 692 ft^2

Answer:

1.) The 1ˢᵗ three term is (-32), (-7) and 18

2.) The 1ˢᵗ three term is 127, 106 and 85

Step-by-step explanation:

Here,

First Term = a₁ = - 32

Common Difference = (d) = 25

Now, For 1ˢᵗ three term,

n = 1

a₁ = - 32

n = 2

aₙ = a + (n - 1)d

a₂ = (-32) + (2 - 1) × 25

a₂ = (-32) + 1 × 25

a₂ = (-32) + 25

a₂ = -7

n = 3

aₙ = a + (n - 1)d

a₃ = (-32) + (3 - 1) × 25

a₃ = (-32) + 2 × 25

a₃ = (-32) + 50

a₃ = 18

Thus, The 1ˢᵗ three term is (-32), (-7) and 18

Here,

First Term = a₁ = 127

Common Difference = (d) = -21

Now, For 1ˢᵗ three term,

n = 1

a₁ = 127

n = 2

aₙ = a + (n - 1)d

a₂ = 127 + (2 - 1) × (-21)

a₂ = 127 + 1 × (-21)

a₂ = 127 - 21

a₂ = 106

n = 3

aₙ = a + (n - 1)d

a₃ = 127 + (3 - 1) × (-21)

a₃ = 127 + 2 × (-21)

a₃ = 127 - 42

a₃ = 85

Thus, The 1ˢᵗ three term is 127, 106 and 85

-TheUnknownScientist

Answer:

[tex]25 * 68 = 1700[/tex]

Step-by-step explanation:

Given

[tex]25 * 68[/tex]

Required

Fill the array using doubling and halving

Question is incomplete, as the array is not given.

However, the solution is as follows:

[tex]25 * 68[/tex]

Double 25 and half 68

[tex]25 * 68 = 50 * 34[/tex]

Double 50 and half 34

[tex]25 * 68 = 100 * 17[/tex]

The above is now easy to solve

[tex]25 * 68 = 1700[/tex]

Answer:

4.5 inches

Step-by-step explanation:

Use the formula for the surface area of a sphere, SA = 4[tex]\pi[/tex]r²

Plug in the surface area and solve for r, the radius:

SA = 4[tex]\pi[/tex]r²

254.5 = [tex]\pi[/tex]r²

20.25 = r²

4.5 = r

So, the radius is approximately 4.5 inches

Answer:

x=10 and x=-6

Step-by-step explanation:

f(x)=(x-2)²-64 (Given)

0=(x-2)²-64 (Set equation equal to 0)

64=(x-2)² (Add 64 to both sides)

±8=x-2 (Take the square root of both sides)

Because there are two possible roots, make 2 equations to find both:

8=x-2 and -8=x-2

10=x and -6=x

Answer:

no.b

Step-by-step explanation:

it just no bro