The average age of 40 students of a class is 15 years. An 18 year-old student left the class and a new student was admitted. As a result the average age fell to 14.885 years. Find the age of the new student.

Answer:

Step-by-step explanation:

Using the formula for finding the circumference of a circle.

C = 2πr

r is the radius

radius = diameter/2

radius = 10/2

radius = 5in

C ,= 2(3.14)(5)

C = 20(3.14)

C = 31.4×2

C = 62.8in (for 1 rotation)

For 16 rotations;

C = 16×62.8

C = 1004.8in

The distance covered is 1004.8in

Answer:

[tex]x[/tex]=5

Step-by-step explanation:

0.1 mile per min

Step-by-step explanation:

lol i’m fye

The solution is,  her speed was, A) 0.1 mile per minute.

Speed is measured as distance moved over time. The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m) and time is in seconds (s), so the units will be in metres per second (m/s).

Speed = Distance/ Time.

here, we have,

Explanation:

From physics we know that distance, time and speed are related by the following equation:

Speed = Distance/ Time.

So we can write the distance as:

d = s*t

Here we have a line that passes through the origin and whose independent variable is t and dependent variable is d and the slope is s. From the graph, we can calculate the equation of the line as:

y = mx;

where, slope = m = y2 - y1 / x2 - x1

here, (x1, y1 ) = (0,0)

(x2, y2 ) = (10, 1 )

we get, m = 1/ 10

So:

y = x/10

or, y = 0.1 x

As you can see from the graph:

y is related to distance (d)

x is related to time (t)

Therefore, we can rewrite our equation as:

d = 0.1 t

Finally, the speed (s) is:

s = 0.1 per mile

again, we have,

The line goes through (0, 0), so Maria's speed is the ratio of miles to minutes:

 (4.5 mi)/(45 min) = 0.1 mi/min

hence, The solution is,  her speed was, A) 0.1 mile per minute.

Learn more: on Speed:

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Answer: 1/10

Step-by-step explanation:

I think you mean 3/5 - 1/2?

we need to make the denominators the same, so we find the LCM of 5 and 2, which is 1, so we multiply them to get a common denominator of 10.

Now we multiply 3/5 by 2/2 to get 6/10, and 1/2 by 5/5 to get 5/10.

6/10 - 5/10 = 1/10

can you give brainliest

Step-by-step explanation:

5million = 5000000 = 5 x 10^6

Topic: Unit conversion

If you like to venture further, do check out my insta (learntionary) where I constantly post math tips! Thanks!

Answer:

=29520pence

Step-by-step explanation:

€1 = 72 pence

So

€410=410×72

=29520pence

Answer:

Jorge Has 33 more toy animals than kara

Step-by-step explanation:

Answer:

Jorge has 33 toy animals.

Step-by-step explanation

We're adding 25 and 8 together to get our answer, which would be 33 at the end.

Answer:

The perimeter of a rectangle is P = 2 b + 2 h , where is the base (or width) and is the height (or length). If a rectangle is a square, with sides of length , the formula for perimeter is P s q u a r e = 2 s + 2 s = 4 s and the formula for area is A s q u a r e = s ⋅ s = s 2

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

A ratio is a comparison of two quantities(amounts), so if we show the comparison of 10 apples in the fridge to 7 apples on the table, the ratio being the number of apples in the fridge to the number of apples on the table, would be 10:7, 10 to 7, or 10/7

Answer:

x=1/2

Step-by-step explanation:

each sunflower is $2.25. please mark brainliest and have a great day.

Answer:

11

Step-by-step explanation:

25%=1/4

44*1/4=11

Answer:

171

Step-by-step explanation:

300*0.57=171

Answer:

129

Step-by-step explanation:

Answer:

Step-by-step explanation:

Area of a square = s²

s is the side length of the square

Given

s = 2^{7 1/2}

s = 2^15/2

Area = ( 2^15/2)²

Area = 2^15

Hence two area of the square is 2^15 inches

Answer:

A = 128 square inches

Step-by-step explanation:

A square is a figure with equal length of sides.

Given a square of side, s, [tex]2^{\frac{7}{2} }[/tex] inches.

Area of a square, A = length of side x length of side

                            = s x s

                            = [tex]s^{2}[/tex]

Thus,

A = [tex]s^{2}[/tex]

   = [tex](2^{\frac{7}{2} } )^{2}[/tex]

   = [tex]2^{\frac{14}{2} }[/tex]

   = [tex]2^{7}[/tex]

   = 128

A = 128 square inches

The are of the square is 128 square inches.

Answer:

X=17

Step-by-step explanation:

AC^2=AB^2 +BC^2(PYTHAGOREAN THEORM)

100=64 +BC^2

36=BC^2

6CM=BC

AD^2=AB^2+BD^2(PYTHAGOREAN THEORM)

X^2 =64+225

X^2=289

X=17

Answer:

y=-3x+-1 or y=-3x-1; y intercepts(0,-1); x intercepts(0,1/3)

Step-by-step explanation:

y=mx+b

-1=-3*0+b

-1=0+b

(subtract 0 from both sides)

-1=b

So your equation will be: y=-3x-1

The equation of the line with a slope of -3 and y-intercept of -1 is given as y = -3x - 1. And the graph is shown below.

A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.

Write an equation in slope-intercept form for the line with slope -3 and y-intercept -1.

We know that the equation of the line is given as  

[tex]\rm y = mx +c[/tex]

Where m is the slope and c is the y-intercept. Then the equation will be

[tex]\rm y = -3x - 1[/tex]

Then the graph of the line is given below.

More about the linear system link is given below.

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Answer:

1.8 %

Step-by-step explanation:

Subtract $10.50 from $12.30 and you will get 1.8.

Then divide 1.8 to 100 (because 100% = total) and you will get 0.018 which means 18%. Her hourly wage increased by 18%.

*I hope this helped :)

The percentage increase in Patti’s hourly wage will be 1.8%

The Percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

It is given that Patti got a new part-time job. Her hourly wage increased from $10.50 to $12.39.

The percentage change will be calculated as:-

Subtract $10.50 from $12.30 and you will get 1.8. Then divide 1.8 by 100 (because 100% = total) and you will get 0.018 which means 18%. Her hourly wage increased by 18%.

Percentage change = ( 12.39 - 10.50 ) / 10.50

Percentage change = 1.89 / 100

Percentage change = 0.018 x 100 = 1.8%

Therefore, the percentage increase in Patti’s hourly wage will be 1.8%

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Answer:

y = -1

Step-by-step explanation:

there is no slope, so the slope is 0

Answer:

-8

Step-by-step explanation:

Answer:

I think its 68 + 1 = 69

Step-by-step explanation:

Answer:3

Step-by-step explanation:

Just add the numbers backwards

Answer:

the answer is -3

Step-by-step explanation:

5+-3=2

5-3=2

Answer:

$765.85

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

C $93.44

Step-by-step explanation:

Just took the test on EDG

If i understand what you're asking then,

0.5*0.6 = 0.3

so you need to find any other thing that would also = 0.3

examples could be:

3/10 = 0.3

0.1+0.2 = 0.3

0.6-0.3 = 0.3

1.0-0.7 = 0.3