a tree is 8 meters tall . what is its height in feet

Answer:

78 Books

Step-by-step explanation:

To answer the problem divide 52 by 2, then take the answer(26) and multiply by 3 which leads you to the 78.

Answer:

1.857 minutes

Step-by-step explanation:

From the given information:

Consider the amount of salt present in the tank as x(t) at a given time (t); &

The volume of the solution = V(t)

At t = 0 i.e. (at initial conditions)  x(0) = 30; and V(0) = 50

However, the overall increase taken place for 1 gallon per minute is:

V(t) = 50 + t

The amount of salt x(t) at any given point for time (t) is;

[tex]\dfrac{x(t)}{V(t)}= \dfrac{x(t)}{50+t}[/tex]

After 5 gallons of solution exit per minute; the concentration of the salt solution changes at:

[tex]\dfrac{dx(t)}{dt}= -\dfrac{5x(t)}{50+t}[/tex]

Taking the integral of what we have above, we get:

In x(t) = - 5 In(t + 50) + In (C)

In x(t) = In (t+ 50)⁻⁵ + In (C)

In x(t) = In C ( t + 50)⁻⁵

x(t) = C(t + 50)⁻⁵      (General solution)

To estimate the required solution; we apply the initial conditions x(0) = 30;

Thus;

x(0) = C(50)⁻⁵ = 30

⇒ C = 30 × 50⁵

Hence; x(t) =  30 × 50⁵ × (t + 50)⁻⁵

The above expression can be re-written as:

[tex]x(t) = 25 \implies 30 \times \bigg ( \dfrac{50}{t+50} \bigg ) ^5= 25[/tex]

i.e.

[tex]\bigg ( \dfrac{50}{t+50} \bigg ) ^5= \dfrac{25}{30}[/tex]

[tex]\dfrac{50}{t+50}= \bigg ( \dfrac{25}{30}\bigg) ^{\dfrac{1}{5}}[/tex]

[tex]\dfrac{50}{t+50}= 0.964192504[/tex]

[tex]{50}= 0.964192504(t+50)[/tex]

50 = 0.964192504t + 48.2096252

50 - 48.2096252 = 0.964192504t

1.7903748 =  0.964192504t

t = 1.7903748 / 0.964192504

t ≅ 1.857 minutes

We can thereby conclude that the estimated time it will require until there are 25 pounds of salt in the tank is 1.857 minutes.

Answer:

It does

Step-by-step explanation:

It does have a proportional relationship because if you try to find the relationship between the first two inputs and outputs, you can find that it is 21 (1 to 21, 21 divided by 1 would be 21) then if you use that relationship with the other numbers (times 21) you would get the same answer. For example in the second one, the two numbers are 2 and 42, 2 times 21 would equal 42. The next one would be 3 times 21 to equal 63 and etc.

Hope this Helps!!

Answer:

45/8 or 5 5/8

Step-by-step explanation:

hope this helped

Answer:

Step-by-step explanation:

you can start by factoring x

x(2x³-x²-18x+9)

you can group terms in parentheses strategicly

x(2x³-18x-x²+9)=x[2x(x²-9)-(x²-9)]

now we can factor x²-9

x(x²-9)(2x-1)

factor the diference of two squares x²-9=x²-3²

x(x-3)(x+3)(2x-1)

so the roots are found by using the zero product rule

x(x-3)(x+3)(2x-1)=0 will give

x=0, x-3=0 so x=3, x+3=0 so x=-3, 2x-1=0 so x=1/2

from left to right

-3, 0, 1/2, 3

Answer:

1. -3

2. 0

3. 1/2

4. 3

Step-by-step explanation:

Answer:

69 degrees farinhieght

Answer:

105%

Step-by-step explanation:

I hope this helped.

Answer:

105

Step-by-step explanation:

iI just pulled up a percentage calculator...

Answer:

The answer is 8

Step-by-step explanation:

Since there's already a negative sign right beside h and one outside of it, the answer has to be positive, and since 12-4=8, the answer is 8

Answer:

um......I think 2 figure it out....

Step-by-step explanation:

A car has 15 gallons of gas in its tank. The car travels 35 miles per gallon of gas. It uses 1/35 of gas to go 1 mile.

Answer:

No

Step-by-step explanation:

The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Answer:

C) 3

Step-by-step explanation:

Answer:

Function B has the greater rate of change, and Function A has the greater y-intercept

Step-by-step explanation:

Equation representing Function A: y= 3/4x + 2

Where,

slope/rate of change (m) = ¾

y-intercept (b) = 2

Using the graph given for Function B, let's find an equation for Function B by determining the slope of the line/rate of change (m) and y-intercept (b).

Using points (1, 0) and (2, 2), which are two points on the line, find slope (m), which is also represents the rate of change.

[tex] m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{2 - 0}{2 - 1} = \frac{2}{1} = 2 [/tex]

Rate of change for function B (m) = 2

y-intercept (b) is the point at which the y-axis is intercepted by the line of the graph = -2

Substitute, m = 2, and b = -2 into y = mx + b.

The equation for Function B would be:

y = 2x +(-2)

y = 2x - 2.

slope/rate of change (m) = 2

y-intercept (b) = -2

Comparing the Function A and Function B,

Function A rate of change is ¾, while that of B is 2. Therefore, Function B has the greater rate of change.

Function A has y-intercept of 2, while Function B has a y-intercept of -2. Therefore, Function A has the greater y-intercept.

Answer:

35x-7

Step-by-step explanation:

Answer:

-14

Step-by-step explanation:

A gain is usually a positive number, and a loss is usually a negative number.

Answer: -14

Answer:

-14

Step-by-step explanation:

this is a negative number

Answer:

The prime factorization of 5 is 5 x 1

Step-by-step explanation:

5 is a prime number but the only factors that make up 5 are 5 and 1

Hope this helps!

Answer:

x > 4

Step-by-step explanation:

2x+2>10 Subtract by 2 on both sides

2x>8 Divide by 2 on both sides

x>4

Answer:

9x^2-12y^2-11x

Step-by-step explanation:

I took the test.

Answer:

15

Step-by-step explanation:

Given that:

Three six-sided dices are to be rolled.

The number of ways to have the same value on the two dices is:

{(1,1) ,(2,2) ,(3,3) ,(4,4) , (5, 5 ) ,(6 ,6) }  = 6 ways

Thus; the objective is to determine the number of ways to a get smaller value on the third dice  while the two other dice have the same value.

To get started:

The number of ways for getting a value smaller than 1 = 0

The number of ways for getting a value smaller than 2 = 1

{i.e. (2,2,1)}

The number of ways for getting a value smaller than 3 = 2

{ i.e. (3,3,1) ,(3,3,2) }

The number of ways for getting a value smaller than 4 = 3

{ i.e. (4,4,1) , (4,4,2), (4,4,3)}

The number of ways for getting a value smaller than 5 = 4

{i.e. (5 ,5,1) ,(5,5,2) ,(5,5,3), (5,5,4)}

The number of ways for getting a value smaller than 6  = 5

{i.e. (6,6,1), (6,6,2), (6,6,3), (6,6,4), (6,6,5) }

Thus, the total number of ways = 0 + 1 + 2 + 3 + 4 + 5 = 15

Therefore, the total number of ways getting the value same on two dices and smaller value on the third dice = 15

Answer:

3/4

Step-by-step explanation:

This is because its going down by 3 and over by 4.

Answer:

12/20=3/5

Step-by-step explanation:

When looking at the picture, you can see that 12 out of 20 squares are shaded. That means that 12/20 are McIntosh apples. Simply that down to 3/5, and that is your answer!

Hope this helps! :)

Answer:

pretty sure it's B, its just really hard to see

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

Answer:

The width of the confidence interval is going to be wider

Step-by-step explanation:

When we Increase the level of confidence without changing the sample size the width of the confidence interval is going to be affected in the following way;

The margin of error (M.E) is going to be larger or be increased. This increase is due to the fact that the critical value is going to increase. Then the increased margin of error would cause the width of the confidence interval to become wider.

This answers your question.

Answer:

It's f(x)=10x+8

Step-by-step explanation:

Because it says every hour not every half hour and the graph changes by 0.5 instead of 1 so m would equal 10

Answer:

when

[tex]x\ge 0[/tex]

then

[tex]x\times \left|x\right|=x^{2}[/tex]

Step-by-step explanation:

As we know that

When x is positive

[tex]\left|x\right|=\:x[/tex]

As from the question,

[tex]x\ge 0[/tex]

so the expression will be:

[tex]x\times \left|x\right|=x\times x=x^2[/tex]      ∵ [tex]x\ge 0[/tex] so [tex]\left|x\right|=\:x[/tex]

Therefore,

[tex]x\times \left|x\right|=x^{2}[/tex]

Answer:

y=x+3

Step-by-step explanation:

y=mx+b

3 is the y-intercept (or b)

The slope goes in front of x, but because it is 1, you don't put anything there.

Answer:

he would get 10$

Step-by-step explanation:

if you divide 500 by 1 you get 5 times that by 2

Answer: The answer is C (7).  

Use the Pythagorean theorem to find the missing side.

√(25^2-24^2)=7