since 1900, the percentage of americans over the age of 65 has while the percentage of americans under the age of 18 has .

Answer:

5

Step-by-step explanation:

because 5x3=15

15 + 5 = 20

Answer:

5

Step-by-step explanation:

work backwards. Start with 20. minus 5 equals 15. Divide by 3 is 5.

double-check by going the other way.

5x3=15

15+5=20

Answer:

the answer is b

jsjsjsjsjsjsjsjsjsjsjsjsjsjsjs

Answer:

thank me later that's is the answer

Answer:

Hope this helps :)

19/20 = 95/100 = 95%

9/16 = 0.5625 = 56.25%

0.4 = 4/10 → 40/100 = 40%

0.22 = 22/100 = 22%

There are 1106 different ways for him to choose the meal.

For given question,

In a restaurant there are 7 starter dishes, 14 main dishes and 9 desserts.

The possibilities of selecting a starter = 7

The possibilities of selecting a main dish = 14

The possibilities of  selecting a dessert = 9

The meal combinations are: a starter dish and a main dish; a main dish and dessert; a starter dish, main dish and dessert dish.

The possibility of selecting each meal combinations would be,

1) a starter dish and a main dish = 7 × 14

                                                     = 98  

2) a main dish and dessert = 14 × 9

                                             = 126

3) a starter dish, main dish and dessert dish

   = 7 × 9 × 14

  = 882

We need to find the total number of different ways to choose the meal.

= 98 + 126 + 882

= 1106

Therefore, there are 1106 different ways for him to choose the meal.

Learn more about different possibilities here:

https://brainly.com/question/14833898

#SPJ4

The height of the silo is 56 feet.

Here, we are given that a large grain silo is to be constructed in the shape of a circular cylinder.

The diameter of the silo = 30 feet

⇒ The radius of the cylinder = 15 feet

and also the radius of the hemisphere = 15 feet

The volume of a hemisphere = 2πr^3/3

Volume = 2 × π × 15 × 15 × 15 × 1/3

Volume of cube = 2250π

Thus, the volume of cylinder = volume of the silo - volume of the hemisphere

= 11,475(3.14) - 2250π

π = 3.14

⇒ 11,475(3.14) - 2250(3.14)

3.14 (11,475 - 2250)

= 3.14 (9225)

= 9225π

Now, the volume of cylinder = πr^2h

Thus, 9225π = π(15) (15) h

9225π/ 225π = h

h = 9225/225

h = 41

Thus, the height of the cylinder = 41

The height of the silo will be the height of hemisphere + height of the cylinder = 15 + 41 = 56 feet.

Learn more about volume here-

https://brainly.in/question/15637217

#SPJ9

Answer:

Either 83 or 103

Step-by-step explanation:

If you count piano as homework, the answer is 103. If piano is not homework, the answer is 83.

Answer:

Step-by-step explanation:

Step-by-step explanation:

well, the starting equation and the target format have been given.

let's do the multiplications and compare the target with the starting information.

from there we see what is different or missing.

x² + 14x + 13 = 0

and

(x - p)² = q

x² - 2px + p² = q

x² - 2px + (p² - q) = 0

now let's compare the different parts :

x² = x²

-2px = 14x

-2p = 14

p = -7

p² - q = 13

-7² - q = 13

49 - q = 13

36 - q = 0

q = 36

so, the square (x - p)² = (x + 7)² is completed when

x² + 14x + 49 = 0

but we have only "+ 13". so we need to add 36 to get 49. but we need to do it on both sides, to keep the equation true :

x² + 14x + 13 + 36 = 36

x² + 14x + 49 = 36

(x + 7)² = 36

just as we calculated already above.

and now this can be solved by pulling the square root on both sides (a quadratic equation has always 2 solutions)

x + 7 = ±6

x1 = 6 - 7 = -1

x2 = -6 - 7 = -13

Answer:

45x

Hope this helps :)

Step-by-step explanation:

- 15x (- 3) = 45 x

A composite number is a whole number greater than 1 that has more than two factors

Given,

The conditions,

We know, composite number is a number that has more than 2 factors

Prime number is a number that has two factors, one and itself.

Here, number is a whole number greater than 1 that has more than two factors

So, the given number is composite number

Hence, a composite number is a whole number greater than 1 that has more than two factors

Learn more about composite number here

brainly.com/question/28199758

#SPJ4

The simplified radical expression for this problem is given by:

[tex]3x^2y^3z\sqrt[3]{3xz^2}[/tex]

To simplify the given radical expression, we divide all the exponents by 3, and the ones that can be simplified are placed outside the root, multiplying.

Looking at each term, we have that:

Thus, the simplified radical is given by:

[tex]3 \times \sqrt[3]{3} \times x^2 \times \sqrt[3]{x} \times y^3 \times z \times \sqrt[3]{z^2}[/tex]

[tex]3x^2y^3z\sqrt[3]{3xz^2}[/tex]

More can be learned about simplified radical expressions at https://brainly.com/question/738531

#SPJ1

The factor by which radius of the sphere be changed is 1.91, which is calculated hy applying the concepts of surface area and volume on the assigned problem.

What do you mean by volume?

Volume is defined as the 3D measurement that deals with the amount of space required by an object. It is always calculated in cubic units. Its basic unit is cubic metre.

Calculation of the change in radius of sphere when its volume is increased by 7

Let the radius and volume of sphere be r and v respectively

Volume of sphere, v = 3.16 × ( r )3            —- 1

Now, changed radius, R = xr

Where x is the factor, we need to calculate

Changed volume, V = 7v = 3.16 × ( R )3          -— 2

From equations 1 and 2, we get,

7v / v = ( R )3 / ( r )3

7 = ( xr )3 / ( r )3

7 = (x)3 × 1

Taking cube root both sides,

x = 1.913

Hence, the factor by which radius of the sphere be changed is 1.91.

Learn more about volume, visit here:

https://brainly.com/question/463363

#SPJ4

The value of a and the value of b is 6 and 5.

We can solve this problem by few steps, If we change the representation of power by replacing all powers according to √x or [tex] {x}^{1/2} [/tex]. We know that, [tex] {x}^{m/n × n/b } = {x}^{m/b} [/tex]

So, using this we can write, [tex] {4x}^{1/2 \times 6} + {x}^{1/2 \times 10/2} = {4 \sqrt{x} }^{6} + { \sqrt{x} }^{5} [/tex]..............(1)

Now if we compare the value of ( 1 ) with

[tex] {4 \sqrt{x} }^{a} + { \sqrt{x} }^{b} [/tex], we can easily find out the value of a and b and it is, a = 6 and b = 5

Thus, the value of a and b is 6 and 5.

To know more about the fraction -

https://brainly.com/question/17220365

#SPJ4

The complete question is -

Driven that 4x^ 3+x^ (5/2) all over √x can be written in the form 4√x^a+√x^ b, write down the value of a and the value of b.

Answer: $5.25

Step-by-step explanation:

Brianna bought 1 3/4 pounds of cheese

Each pound cost $3.00

1 3/4 x $3

Turn this into an improper fraction, you get 7/4

7/4 x $3

$21 over 4

Do the division, you get $5.25

Answer:

Step-by-step explanation:

1 pound price= 3 dollars

Then she has to pay= (7/4)*3 = 5.25 dollars

The function that represents the total amount he charges is y = 80 + 65x and the total amount he charges for designing 5 rooms is $405

The given parameters are

Charge = $80

Rate = $65 per design

The function is then calculated as

y = Charge + Rate * x

Where

y represents the total amount

x represents the number of rooms

So, we have

y = 80 + 65x

Here, we have

x = 5

So, we have

y = 80 + 65 x 5

Evaluate

y = 405

Hence, the total amount he charges for designing 5 rooms is $405

Read more about linear functions at

https://brainly.com/question/15602982

#SPJ1

Answer:

21

Step-by-step explanation:

-19+26= 7

7+14= 21

Answer:

They have played 14 games

Step-by-step explanation:

5/8 and 2/8 is 7/8 of the time, but if 3/8 is 6 then 1/8 is 2, 2*7 is 14

Answer:

The thousandths place.

Step-by-step explanation:

4 is furthest away from the decimal on the right side and it is in the thousandths place.

Answer: 12 free throws

Step-by-step explanation:

40 * 7/10=

280/10=28 free throws made

40-28=12 free throws missed

The given statement states that the parametrization of both the tangent line there at designated position is 7x - 4y = 3.

Finding parametric equations of a curve, a surface, or, more generally, a manifold or a variety, specified by an implicit equation, is the process of parametrization (or parameterization; see parameterization, parametrization). Implicitization is the term for the opposite process.  The parametrization consists of one function of multiple real variables for each coordinate since the state of the system is typically controlled by a finite set of coordinates. The system's degree of freedom is equal to the number of parameters.

r(t) = cos(6t), sin(3t) , t = 4

= -6sin6t, 3cosjt , 1

The parameter of Tangent live is

L(t) = γ(t₀) + tr'(t₀)

therefore

γ(t₀) = γ(ππ₄)

= (0 , 1/√2 , π/4)γ (+0)  =  γ(π/4)

= ( 6, -3/√2 , 1)

putting in the formula we get:

L(t) = γ(t₀) + tr'(t₀)

L(t) = (0 , 1/√2 , π/4) + t( 6, -3/√2 , 1)

= [tex]\left(6 t-\frac{1}{\sqrt{2}}-\frac{3}{\sqrt{2}} t, \frac{\pi}{4}+t\right)$$[/tex]

= 2.

Given

f(x, y ) = in(7x² - 4y²)

at the point(1, 1)

Δ f (m, y) = (fn , f4)

= [tex]\frac{14 x}{7 n^2-4 y^2}, \frac{-8 y}{7 x^2-4 y^2}\\\\[/tex]

Δ f (1, 1)

= [tex]\left\langle\frac{14}{3}, \frac{-8}{3}\right\rangle[/tex]

= (a ,b)

The equation of the tangent plane is

a(x - x₀) + 6dy - y₀ = 0

(14/3)(x - 1)- (8/3)(y -1 ) = 0

14x - 14 - 8y + 8 = 0

14x - 8y = 6

7x - 4y = 3

To know more about parametrization, visit;

https://brainly.com/question/14666291

#SPJ4

The number of hours lopudres will have to jog is .4 hours.

Lord wants to run at least 1.5 miles, and her pace is shown in the picture as 3.75 miles per hour, and the question asks us to construct an inequality expressing x for the amount of hours she would have to run. To meet this inequality, we'll need to apply how quickly or how many miles she wants to cover with how fast she's going to run, so we'll divide 1.5 miles by her rate of 3.75 miles per hour, and when you divide you'll get a number of hours, which comes out to 0.4 hours.

To learn more about inequality from the given link:

https://brainly.com/question/20383699

#SPJ9

There are 3 whole number with different values of x.

All positive integers from 0 to infinity are included in the group of numbers known as whole numbers. The number line has these numbers. They are all genuine numbers as a result. Although not all real numbers are whole numbers, we may argue that all whole numbers are real numbers. As a result, the set of natural numbers plus zero may be used to define whole numbers. The category of whole numbers and the negative of natural numbers is known as integers. Thus, integers can be either positive or negative, including 0. Natural numbers, whole numbers, integers, and fractions all fall under the category of real numbers.

Whole numbers refer to all natural numbers, including '0,' in their entirety. Examples include: 0, 11,1,2,3,4 etc

As stated in the question,

Then, in order to determine which values of "x" the given fraction is a square for, we must first locate them.

We are aware that the factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48.

Now, from the above factors of 48 only (3,12 & 48) of can give us a square number.

Therefore,

Hence, There are 3 whole number with different values of x.

To learn more about whole number , visit:

https://brainly.com/question/28281521

#SPJ4

Answer:

2nd equation is correct.

Step-by-step explanation:

1) 2b + 24 = 30

→ 2(2) + 24 = 30

→ 4 + 24 = 30

→ 28 ≠ 30

Hence, it is false.

2) 3b - 2 = 4

→ 3(2) - 2 = 4

→ 6 - 2 = 4

→ 4 = 4

Hence, it is true.

3) B + 4 = 8

→ 2 + 4 = 8

→ 6 ≠ 8

Hence, it is false.

4) 2b - 3 = 0

→ 2(2) - 3 = 0

→ 4 - 3 = 0

→ 1 ≠ 0

Hence, it is false.

The cost of filling your gas tank if it is already 38 38 full. $48.88 required to fill the gas tank if it is already 38% full.

Money do you spend on gasoline is $72.46 is spends on that trip.

Given that

To find

So according the question

We have

Now, for finding

a.) The cost of filling your gas tank if it is already 38 % full.

      38 % of 25 gallon = 9.5 gallon

      the unfilled part of the tank  = 25-9.5 = 15.5 gallon

      So the tank can filled 15.5 gallon of gasoline more now.

      The cost of 15.5 gallon of gasoline

                                   = 15.5 × cost of 1 gallon of gasoline

                                   = 15.5 × 2.96

                                   = $45.88

b.) How much money spend on gasoline on the trip of 705 miles.

    ∵ Car can travelled in 1 gallon of gasoline = 28.8 miles.

    ∴ Gasoline required to travel 705 miles = [tex]\frac{705}{28.8}[/tex]

                                                                        = 24.48 gallon.

      The cost of 24.48 gallon of gasoline

                                   = 24.48 × cost of 1 gallon of gasoline

                                   = 24.48 × 2.96

                                   = $72.46    

To learn more money spend type problem please click the link

https://brainly.com/question/20042107

#SPJ4

Step-by-step explanation:

what do you mean by "rule" ?

the line equation (in slope-intercept form ? or any other ?) ?

or only the slope of the line ?

I assume you need the slope-intercept line equation.

this looks like

y = ax + b

"a" is the slope of the line, "b" is the y-intercept (the y value when x = 0).

"b" we know already from the specified intercept points : 5.5

the slope of a line is simply the ratio

(y coordinate change / x coordinate change)

when going from one point on the line to another.

and the axis-intercept points are points on the line too. so, we can use them.

so, we see

x changes by +3.667

(= 3 2/3 = 3×3/3 + 2/3 = (3×3 + 2)/3 = 11/3)

from -3.667 to 0.

y changes by +5.5

(= 5 1/2 = 5×2/2 + 1/2 = (5×2 + 1)/2 = 11/2)

from 0 to 5.5

the slope is therefore

5.5 / 3.667 = 11/2 / 11/3 = 11/2 × 3/11 = 3×11 / 2×11 = 3/2

and so, the line equation is

y = 3/2 x + 5.5

or

y = 3/2 x + 11/2 = 1/2 × (3x + 11)

Answer:

170 minutes

Step-by-step explanation:

Weekly gym sessions:

Therefore, the total time for all sessions is:

[tex]\begin{aligned}\implies \sf Total\:time & = \sf 2 \times 45 + 4 \times 30\\& = \sf 90 + 120 \\& = \sf 210 \:\:minutes\end{aligned}[/tex]

If Judy attended all sessions, yet

[tex]\begin{aligned}\implies \sf Total\:time\:Judy\:lost& = \sf 2 \times 10 + 4 \times 5\\& = \sf 20 + 20 \\& = \sf 40\:\:minutes\end{aligned}[/tex]

Therefore:

[tex]\begin{aligned}\implies \sf Total\:time\:Judy\:worked\:out & = \textsf{Total time of sessions}-\textsf{Total time Judy lost}\\& = \sf 210-40\\& = \sf 170\:\:minutes\end{aligned}[/tex]

So Judy worked out for a total of 170 minutes for the week

Answer:

$54

Step-by-step explanation:

6.75*8=54

Answer:54

Step-by-step explanation:8x6.75=54

The unknown quantity which is the radius has a length of  49752/π yards.

The formula for the length of arc is;

S = rθ

where;

r is radius

θ is the central angle in radians

Now, we are given;

θ = 3π/4

S = 4146 * 9 yards

Thus, making r the subject and solving gives;

r = S/θ

r = (4146 * 9)/(3π/4)

r = 49752/π

Thus, the unknown quantity which is the radius has a length of  49752/π yards.

Read more about Arc Length at; https://brainly.com/question/2005046

#SPJ1

Answer:

this is the answer assuming the equation was meant to be simplified.

Step-by-step explanation: