Mathematics High School

George practises his guitar for 1 1/5 hours per day on school days. On Saturday he increases to 2 1/2 times his normal time. How many hours does he practice on Saturdays.

Answers

Answer 1

Answer: 231/10

Step-by-step explanation: 11/5 x 21/2

= (11 x 21) = 231  

= 231/5 x 2

=  231/10

Answer 2

Answer:

3 hours

Step-by-step explanation

It would be easier to convert your fractions into decimals.

1/5 is the same as 2/10.  Since the denominator was multiplied by 2 then the numerator must be multiplied by 2 also.

2/10 in decimal form is 0.2

He would practice 1.2 hours per day on school days

On Saturday his practice is 2 1/2 times longer than 1.2 hours.

Convert 1/2 into decimal form. 1/2 is the same as 0.5.

So 2 1/2 is the same as 2.5

If you multiply the original time (1.2 hours) by 2.5, you'll know how long he practices on Saturday.

1.2 x 2.5  = 3 hours.

    1.2

 x 2.5

  -------

     60

   24  

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

   300          

since you have 1 decimal place in the top number and 1 decimal in the bottom number, you must move your decimal 2 places to the left on your answer.  Instead of 300, your answer becomes 3.00

Related Questions

Rachel has a certain number of pencils in her locker. She has 12 sharpened pencils and 32 unsharpened pencils. What is the ratio of unsharpened pencils to sharpened pencils?

Answers

Answer:

sharpened to unsharpened = 3 : 8

for every 3 sharpened pencil, there are 8 unsharpened pencils

Step-by-step explanation:

12s : 32u

12/32

divide both by 4

3/8

ratio = 3:8

Find the value of y.
y
120

Answers

Answer:

60 degrees

Step-by-step explanation:

How many times in the 30 minutes graphed is the temperature exactly 40 degrees? (Brainlist!!)

Answers

Answer:

It occered 3 times.

Step-by-step explanation:

The heights of five-year-olds are Normally distributed with a mean of 42.5 inches and a standard deviation of 2.5 inches. A random sample of 16 five-year-olds is taken and the mean height is recorded. What would be the standard deviation of the sampling distribution of all possible samples of size 16?

0.16
0.63
2.5
2.66

Answers

Answer:

0.63

Step-by-step explanation:

I'll mark you brainliest if your correct​

Answers

Answer:

The answer is 7

Step-by-step explanation:

on the graph number 6 is spun at 7

ѕєє thє híght σf вαr αt 6!! whαt'ѕ thє hєíght? σвvíσuѕlч ít'ѕ 7

í hσpє чσu gєt ít :)

help agine plz i will give branliets

Answers

You need to have 1 hundred block and 5 ten sticks and 3 one dot

elationship between Two Vallables Use the graph to find the relationship between the two variables. Select all that apply. O The two variables are books and months. O The two variables are 4 and 8. O Books is the independent variable, and months is the dependent variable. O Months is the independent variable, and books is the dependent variable. The relationship is y = 4x. The relationship is x = 4y. 8​

Answers

Answer:

A D E <3 your welcome!

Answer:

b c and f :)

Step-by-step explanation:

hope this helps :)

HELPP QUICK PLEASE THIS IS MY 10TH TIME POSTING THIS PLS NO LINKS NO BOTS OR JUST PUTTING ANSWERRS TO GET POINTS I REALLY NEED HELP SO PLEASEE Which of the following are point-slope equations of the line going through
(-3, 4) and (2, 1)? Check all that apply.
MORE THAN ONE ANSWER PLS

Answers

Answer:

F and B are the correct answers

The graph of a quadratic function has a vertex (3,-1). What is the domain and the range? The graph is pointing downward

Answers

Listen 2 nba young boy it makes u move faster it helps me 2 and yessirrrrre

which graph represents a function

Answers

Answer:

a

Step-by-step explanation:

Answer:

dfvgbhnm,kmjnhbgvx

Step-by-step explanation:

c vgbhjnmk,jnhbgvfc

the price of a video game decreased from $60 to $54. what percentage did the price decrease by?

Answers

Answer: 90%

Step-by-step explanation:

Plz help, And no links please


List all the possible rational zeros of the function f(x)=x^2-5x+12

Answers

I did not get any zeros since the graph doesn’t cross the x axis, meaning that there are no rational zeros

However, here is the method u can use to find the zeros lol


You can use the quadratic formula in order to get the zeros

This is the equation therefore use these values
ax^2+bx+c=0

A=1
B= -5
C=12

The quadratic formula is -b±√(b^2-4ac))/2a (I left a picture just in case)

help please i’ll really appreciate it

Answers

Answer:

radius is 4 height is 10 volume is 167.55

Step-by-step explanation:

Check out this rectangular prism

Find the surface area of the rectangular prism (above) using its net (below).

Answers

Answer:

52

Step-by-step explanation:

Used hint.

Answer:

52

Step-by-step explanation:

if you are on khan or on something else it is 52

Giving brainliest, easy question
A circle is centered at (5, −9) and has a radius of 12. Which of the following is the equation for this circle?

(x − 5)2 + (y + 9)2 = 12
(x − 5)2 + (y + 9)2 = 144
(x + 5)2 + (y − 9)2 = 144
(x + 5)2 + (y − 9)2 = 12

Answers

Answer:

(x − 5)2 + (y + 9)2 = 144

Step-by-step explanation:

Hope this helps

please help due todayyy://

Answers

Answer:

B. product graph

Step-by-step explanation:

Hope it helps

CarryOnLearning

Solve for x show your work

Answers

Answer:  The answer is -5

Step-by-step explanation:

4x - 3 = 6x + 7

    - 7           -7

4x - 10 = 6x

-4x        -4x

-10 = 2x

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

       2

-5 = x

Answer:

x = -5

Step-by-step explanation:

4x - 3 = 6x + 7

Add 3 to both sides to isolate the variable:

4x = 6x + 10

Subtract 6x from both sides to keep x on 1 side:

-2x = 10

Divide by -2 to have the base value of x:

x = -5

6383 to the nearest hundred
​

Answers

Answer:

6400

Step-by-step explanation:

its 6400 to the nearest hundred

Answer:

6400

hope this answer helps you.....

what is 3456 x 3 hundreds

Answers

Answer:

3456 × 300 is equal to 1036800.

Answer:

1036800 right or did i miss read the question?

Step-by-step explanation:

Which of these statements is most accurate regarding mortgage payments through the life of your loan?
a.
At the beginning of your loan, your payments are covering mostly interest. At the end of your loan, your payments are covering mostly principal.
b.
The amount for your mortgage payments will decline over the life of your loan.
c.
The amount of interest paid per mortgage payment will remain the same over the life of your loan.
d.
The amount of principal paid per mortgage payment will decrease over the life of your loan.


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

Step-by-step explanation:

The correct answer is

a.

At the beginning of your loan, your payments are covering mostly interest. At the end of your loan, your payments are covering mostly principal.

A basketball is thrown upward from a height of 6 feet at an initial speed of 15 feet per second. As the basketball travels, Earth's gravity slows it down.

The height of an object dropped from a height of 6 feet is given by h(t)=−16t2+6.

The distance in feet traveled by an object at a constant speed of 15 feet per second is given by d(t)=15t.

These two functions can be combined to build a new function, f, that models the height of the basketball as a function of time in t seconds.

Which choice shows how to combine h and d to build f

Answers

Answer: f(t)=h(t)+d(t)

f(t)=-16t^2+15t+6

Step-by-step explanation:

I just got this question right

A company makes wax candles shaped like rectangular prisms. each candle is 5 cm long, 2 cm wide and 12 cm tall. if the company used 5040 cm^3 of wax, how many candles did they make ?

Answers

Answer:

[tex]42[/tex]

Step-by-step explanation:

V=whl=2·12·5=120,

5040 divided by 120= 42

The manager of a sporting goods store raises the price of a basketball from $16 to $18. What is the percent increase?

Answers

Answer:

12.5%

Step-by-step explanation:

SOMEONE PLS HELP ME FIND THE AREA OF THIS COMPOSITE FIGURE. ILL GIVE BRAINLIEST!

Answers

For this composite question you will need to divide the shape into two different shapes. The large rectangle is going to be 60 in square because of base times height and then you would need to find the square which would be 4 times 4 cause of base times height but because it’s a triable you divide by 3 so 16/2 would be 8 than you would add both shapes and get 68 in squared. Hope that helps!

PLEASE HELP !!!!!!!! What is the equation of the directrix for the following parabola: -8(x-5)=(y+1)^2

a. y=-3
b. x=7
c. y=7
d. x=-3

Answers

Answer:

x=7

Step-by-step explanation:

The directrix of the equation is x=7

What is directrix of parabola?

The directrix of a parabola is a line that is perpendicular to the axis of the parabola. The directrix of the parabola helps in defining the parabola. A parabola represents the locus of a point which is equidistant from a fixed point called the focus and the fixed line called the directrix. The directrix and the focus are equidistant from the vertex of the parabola. Here we define the directrix for the standard equations of a parabola.

The directrix of the parabola y^2 = 4ax, having x-axis as its axis, passes through (-a, 0), and has the equation x + a = 0.The directrix of the parabola y^2 = -4ax, having x-axis, passes through (a, 0), and has the equation x - a = 0.The directrix of the parabola x^2 = 4ay, having y-axis as its axis, passes through (0, -a), and has the equation y + a = 0.The focus of the parabola x^2 = -4ay, having y-axis as its axis, passes through (0, a), and has the equation y - a = 0.

Given:

-8(x-5)=(y+1)²

Now, using the definition of directrix

x= 8/4 +5

x= 2+ 5

x= 7

Learn more about directrix here:

https://brainly.com/question/17376399

#SPJ2

Sophie surveyed 30 random students in her school and 18 said they enjoy watching baseball. A total of 1,050 students are in the school. How many of these are EXPECTED to enjoy watching baseball? *

Answers

Answer:

630 people

Step-by-step explanation:

Ratios:

[tex]\frac{18}{30} =\frac{x}{1050} \\\\30x=18900\\x=630[/tex]

The density of oxygen is 0.001429 grams per cubic centimeter. How is this number written in scientific notation?

Answers

Answer:

How is this number written in scientific notation? A. 1.429 x 10.

The number 0.001429 is written in scientific notation as [tex]1.429*10^{-3}[/tex].

Here, the density of oxygen is 0.001429 grams per cubic centimeter.

What is scientific notation method?

Scientific notation is a way of writing very large or very small numbers.

A number is written in Scientific notation when a number between 1 and 10 is multiplied by a power of 10.

The value of 0.001429 in scientific notation is written as;

⇒[tex]0.001429 = 1.429*10^{-3}[/tex]

The number 0.001429 is written in scientific notation as [tex]1.429*10^{-3}[/tex].

Learn more about the Scientific notation visit:

https://brainly.in/question/17228705

#SPJ6

A quadrilateral is inscribed in a circle. Find the measure of each missing angle as labeled below. Show your work and/or explain how you got your answer.
1 point for each correct angle measure and 1 point for explaining or showing how you got your answer. Don’t forget to label your answers.

Answers

Answer:

C = 95°

D = 72°

F = 108°

Step-by-step explanation:

Opposite angles of an inscribed quadrilateral are supplementary. Inscribed angles are half the measure of the arc they subtend. (The latter statement can be used to prove the former one.)

Using these relations, we have .

 C = 180° -E = 180° -85° = 95°

 D = 144°/2 = 72°

 F = 180° -D = 180° -72° = 108°

14, 11,8, 1, 23, 20, 17, 5, 19, 10, 12, 22

Answers

Answer:

I did not understand anything

Given: Triangle ABC with AB = 45 and BC = 18.

Which of the following are possible lengths for AC?

35

17

7

56

70

27

30

63

Answers

Answer:

35, 27, and 30

Step-by-step explanation:

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