Huilan is 9 years older than Thomas. The sum of their ages is 53 . What is Thomas's age?

Answer:

6 miles all together in them 8 days

Step-by-step explanation:

3/4 times 8

Answer:

6 miles in all

Step-by-step explanation:

3/4 *8 duh

Part A:

The range is the difference between the highest and lowest values:

Highest value = 78

Lowest value = 40

Range = 78-40 = 38

Part B:

The interquartile range is the difference between Q1 and Q3.

Q1 is the middle value of the lower half and Q3 is the middle value of the upper half.

There are 11 total numbers,  40 , 64, 66, 67,67,68,69,70, 71, 72, 78

The median would be the middle value, 68, so the lower half would be the 5 numbers below 68:  40 , 64, 66, 67,67.

The middle value of those numbers would be 66

The upper half are the 5 numbers above 68: 69,70, 71, 72, 78.

The middle value of those numbers is 71

The interquartile range would be 71 - 66 = 5

Part C:

The interquartile range is the better measure.

Answer:

2 hours

Step-by-step explanation:

using the relationship

distance = speed × time, then

time = [tex]\frac{distance}{speed}[/tex] = [tex]\frac{30}{15}[/tex] = 2 hours

It will take 2 hours to cover 30 miles so option (C) is correct.

The ratio is the division of the two numbers.

For example, a/b, where a will be the numerator and b will be the denominator.

Proportion is the relation of a variable with another. It could be direct or inverse.

Given that,

A cyclist rode at an average speed of 15 mph for 30 miles.

So,

15 miles ⇒ hour

Multiply by 2

2 hours ⇒ 30 miles.

Hence "It will take 2 hours to cover 30 miles".

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Answer:

y intercept

Step-by-step explanation:

At first I didn't think there was enough information, but there is. In general terms, for any polynomial which is also a function, making x = 0 gives the point where (0,b) = the y intercept.

For example

using f(x) = x^2 + 4x + 6 when x = 0 the result left is f(0) = 6 so the y intercept is (0,6)

If you have x^2 + 6x the y intercept is (0,0)

Answer:

185.39 m

Step-by-step explanation:

Central angle = 8π/5 radians

Let's convert radians to degrees.

Answer:

The length of arc is 185.39 m      

Step-by-step explanation:

Given that in a circle with a radius of 36.9 m, an arc is intercepted by a central angle of [tex]\frac{8\pi}{5}[/tex] radians.

we have to find the arc length.

[tex]Radius=36.9 m[/tex]

[tex]\text{Central angle=}\frac{8\pi}{5}[/tex]

The arc length can be calculated by the formula

[tex]L=r\theta[/tex]

[tex]\text{where r is radius and }\theta \text{ is central angle in radians. }[/tex]

[tex]L=36.9 \times \frac{8\pi}{5}[/tex]

[tex]L=36.9 \times \frac{8\times 3.14}{5}[/tex]

[tex]L=\frac{926.928}{5}=185.3856\sim 185.39 m[/tex]

hence, the length of arc is 185.39 m

If the shape shown is rotated about the axis, a solid cylinder would be formed.

A cylinder is a three dimensional shape (has length, width and height) which has two parallel bases joined by a curved surface, at a fixed distance.

If the shape shown is rotated about the axis, a solid cylinder would be formed.

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When a rectangle is rotated about an axis, it forms a solid cylinder.

The shape that best describes the object generated when a rectangle is rotated about an axis is a solid cylinder. When a rectangle is rotated around an axis, it forms a three-dimensional shape that is similar to a cylinder. The base of the shape is a rectangle, and the height is equal to the length of the original rectangle. The shape has a curved surface and two circular faces at the top and bottom, just like a cylinder.

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A line that intersects a circle at exactly one point is called a tangent.

A line segment that touches a circle specified to only one point is called a tangent to that circle.

The point where it touches the circle is called the point of tangency.

We can see that point line segment PT is the tangent of our circle and point P is the point of tangency.  

Therefore, A line that intersects a circle at exactly one point is called a tangent.

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Answer:

21 child tickets

Step-by-step explanation:

For this problem, you'd use a system of equations.

First, define your variables.

x = # of child tickets sold

y = # of adult tickets sold

There were 4 times as many adult tickets (y) as child tickets (x) sold, so:

4 x = y

4 x - y = 0

93 (4 x - y = 0)

372 x - 93 y = 0

The total revenue was $909.30, adult tickets were $9.30 each, child tickets were $6.10 each, so:

6.10 x + 9.30 y = 909.30

10 (6.10 x + 9.30 y = 909.30)

61 x + 93 y = 9093

372 x - 93 y = 0

433 x = 9093

433 x / 433 = 9093 / 433

x = 21

Answer:

10

Step-by-step explanation:

7 2/9 + 2 7/9  common denominators already the same so add

7+2=9 first start with the whole number

2/9 + 7/9= 9/9 = 1 then add the fractions

9+1=10 then add the whole number and fraction

Answer:

10

Step-by-step explanation:

Answer:

8 minutes

Step-by-step explanation:

time = distance/speed

A decrease of 15 mph from 45 mph means the speed on the second segment is 30 mph. Filling in the given values in the above equation, we have ...

... time = (4 mi)/(30 mi/h) = 4/30 h = 8/60 h × (60 min/h) = 8 min

i dont really unserstand what this is?

Answer:

t= u+v+w

Step-by-step explanation:

i did the test and got it right

Answer:

area of base =  [tex]\pi r^2[/tex]

where 'r' is the radius

Step-by-step explanation:

Volume of the cylinder formula = [tex]\pi r^2h[/tex]

volume of cylinder = area of base * height

The base of a cylinder is a circle. so we use the area of circle for the base of cylinder while finding volume

We know area of the circle is [tex]\pi r^2[/tex]

So area of the base of cylinder is  [tex]\pi r^2[/tex]

To find volume of the cylinder , we multiply the base of the cylinder with height

To determine the base of the cylinder we need radius of the cylinder

area of base =  [tex]\pi r^2[/tex]

where 'r' is the radius

Answer: c

Step-by-step explanation: teehee

Answer:

Option B is correct

The maximum revenue that the company can make from the treadmill sales is, $81,000

Step-by-step explanation:

Let x represent the number of treadmill x sold and y represents the number of treadmill y sold

As per the statement: Three times the number of treadmill y sold must be less than or equal to twice the number of treadmill x sold.

⇒[tex]3y\leq 2x[/tex]                    ......[1]

Also, it is given that the company has at most 100 treadmills to sell.

⇒[tex]x+y\leq 100[/tex]

using a graph tool for equation [1] and [2] as shown in figure given below;

⇒ the solution is the shaded area

The maximum revenue that the company can make is for the point, (60, 40)

⇒ x = 60 treadmills

and y = 40 treadmills

Maximum Revenue = [tex]60 \times 750 + 40 \times 900 = 45000+36000 = \$81,000[/tex]

Therefore, the maximum revenue that the company can make from the treadmill sales is, $81,000

Answer:

A: 4.07 ounces

Step-by-step explanation:

17.0 - 12.93 = 4.07

Answer:

The weight of the mystery substance added by Tim is 4.07 ounces. Hence option A is correct.

Solution:

Given, Tim is measuring the weight (in ounces) of a substance for a science experiment.  

Tim added a mystery substance (m) to his experiment.  

Tim used the equation 12.93 + m = 17.0 to find out how much he added.

We have to find how much of the mystery substance (m) did Tim add to his experiment?  

Now, from the given equation, 12.93 + m = 17.0 → m = 17.0 – 12.93 → m = 4.07

Hence, the weight of the mystery substance is 4.07 ounces, i.e. option A is correct.

Answer:

x=5

Step-by-step explanation:

If ABCD is a parallelogram, then AB = CD

AB=CD

6x-10 = 3x+5

Subtract 3x from each side

6x-3x -10 = 3x-3x+5

3x-10 = 5

Add 10 to each side

3x-10+10 = 5+10

3x = 15

Divide by 3 on each side

3x/3 =15/3

x=5

Answer:

6

i just did the test rn

Step-by-step explanation:

x = 3

"Standard form" is the form ...

... ax + by = c

where a, b, c are mutually prime integers. The coefficients a and b cannot both be zero. The leading coefficient must be positive. If "a" is zero, then the leading coefficient is "b".

So ...

... x = 3

is in standard form already. (a=1, b=0, c=3)

_____

Further comments on Standard Form

Of course, if the line has irrational slope or intercept, the coefficients cannot all be integers.

The order of the variables may be swapped, in which case the coefficient of y is the leading coefficient and must be positive.

This is the only way a vertical line can be written, as slope-intercept form is undefined for a vertical line.

Answer:

Step-by-step explanation:

Step 1: Calculate the change by subtracting old cost ($52) from the new cost ($64)

Step 2: Divide that change by the old cost ($52).  You will get a decimal number

Step 3: Convert the decimal number to a percentage by multiplying by 100%

Answer:

The answer would be 24

Step-by-step explanation:

7 pies= 1/4 so 7 times four (to equal whole) = 24

Answer:

See attached diagram

Step-by-step explanation:

Given quadrilateral has vertices at points A(-8,4), B(4,-4), C(0,-8) and D(-4,-4).

A dilation with a scale factor of [tex]\dfrac{3}{4}[/tex] and a center of dilation (0,0) has a rule

[tex](x,y)\mapsto \left(\dfrac{3}{4}x,\dfrac{3}{4}y\right).[/tex]

Then

See attached diagram for details.

Remark: If a scale factor is 34, then the rule is (x,y)→(34x,34y) and image vertices have coordinates (-272,136), (136,-136), (0,-272), (-136,-136).

Answer: C

Step-by-step explanation:

 x² + 25

= x² - (-25)

This can now be factored using the sum & difference formula:

√x² = x

√-25 = 5i

So, x² - (-25) = (x - 5i)(x + 5i)

Answer:

1.5

Step-by-step explanation:

The real rate of return is calculated as the difference between rate of interest and the inflation.

so,Interest=2.5%

Inflation=1%

=2.5-1

=1.5%

Answer:

1.485 % ( approx )

Step-by-step explanation:

We know that,

[tex]\text{Real rate of return}=\frac{1+\text{Nominal rate}}{1+\text{Inflation rate}}-1[/tex]

Given,

Nominal rate = 2.5 % = 0.025

Inflation rate = 1 % = 0.01,

[tex]\implies \text{Real rate of return}=\frac{1+0.025}{1+0.01}-1[/tex]

[tex]=\frac{1.025}{1.01}-1[/tex]

[tex]=1.01485149-1=0.01485149\approx 0.01485[/tex]

Thus, the real rate of return is 0.01485 or 1.485 %.

She drove 2 hours at 35 miles per hour for a total of 35 * 2 = 70 miles.

She drove 3 hours at 48 miles per hour for a total of 48 * 3 = 144 miles.

Her total miles were: 70 + 144 = 214.

Her total driving time was 3 + 2 = 5 hours.

Divide her total miles by total time for her average speed:

214 / 5 = 42.8 miles per hour average speed.

Not sure if you need to round the answer or not.

Mrs. Padre's average speed for the entire trip is 42.8 miles per hour, which is calculated by dividing the total distance (214 miles) by the total time (5 hours).

To determine Mrs. Padre's average speed for the whole trip, we need to use the formula for average speed:

Average speed = Total distance / Total time

First, we calculate the distance traveled during each part of the trip:

Next, we sum up the total distance and total time:

Now we can calculate the average speed:

Average speed = 214 miles / 5 hours = 42.8 miles per hour

Answer:

-20,-15,-13,-10,3,15,16

Step-by-step explanation:

negative to positive

Answer:2 times

Step-by-step explanation:

i did the assinment

The answer is 2,240 + 170n

2,240 in savings

210n

3

Henry saves each week

100n parents put in savings each week

thus,

2,240 + 210n

3

+ 100n

2,240 + 70n + 100n

2,240 + 170n

Answer:

$1.02

Step-by-step explanation:

We are told that Clark buys 2 gallons of paint for $ 16.39.

To find the cost per pint of paint let us convert amount of paint in gallons.

1 gallon = 8 pints.          

2 gallons= 8*2 pints= 16 pints.

Now let us find cost per pint of paint by dividing the total cost of paint by number of pints in 2 gallons.

[tex]\text{The cost per pint of paint}=\frac{16.39}{16}[/tex]

[tex]\text{The cost per pint of paint}=1.024375[/tex]

Upon rounding our answer to nearest cent we will get,

[tex]\text{The cost per pint of paint}=1.02[/tex]

Therefore, the cost per pint of paint is $1.02.

Answer:

(f+g)(x) = 13x + 3

Step-by-step explanation:

Rewrite  f(x)=2x+7 and g(x)=11x-4 in columns, as follows:

f(x)=2x+7

+g(x)=11x-4

----------------

Now add each column separately.

f(x)+g(x) = (f+g)(x) ("the sum of functions f and g")

2x + 11x = 13x, and, finally, 7-4 = 3.

Therefore,

 f(x)=2x+7

+g(x)=11x-4

----------------

(f+g)(x) = 13x + 3

Answer:

F.MBFFBLKFDKGBKK FGLK doingTDKDT

Step-by-step explanation:

Answer:

Step-by-step explanation:

Alright, lets get started.

Suppose car was driven x miles in its 4 days trip.

Cost of a car rental is thirty dollar per day.

So, for 4 days, the car rental will be = [tex]30*4=120[/tex] $

For 1 mile, it adds fifteen cents,

So, for x miles, the cost will be = [tex]0.15 x[/tex] $

As per question, total rent is 180 $

Total rent will be = [tex]120 + 0.15 x = 180[/tex]

Subtracting 120 in both sides

[tex]0.15 x = 180-120=60[/tex]

[tex]x=\frac{60}{0.15}[/tex]

[tex]x=400[/tex]

It means car was driven 400 miles.   :   Answer

Hope it will help :)