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5 to 9 ratio 450 is the 5 what is the 9

See if this helps

\(\frac{5}{9} = \frac{5*90}{9*90}=\frac{450}{?}\)

What do you think thre ? should be.

The vertex is where df(x)/dx = 0

df(x)/dx = -(2/3)x-5

This is zero when x = -15/2, at which point f(x) = -(1/3)(15/2)^2 - 5*(-15/2) + 2 = 83/4

so the vertex is at (-15/2, 83/4)

OR you coiuld just find 3/4 of the the whole cirlce in the first place.

A= 3/4      *     pi* r^2

See if this helps

https://www.mathsisfun.com/numbers/scientific-notation.html

It is undefined.  You cannot divide any number by zero.

946.1666666666666667

f(x)=-1/3x^2-5x+2

Roots are:x = -15/2-sqrt(249)/2 and  x = sqrt(249)/2-15/2

Use this formula to find the mass: Density=mass/volume, or Mass=density X volume, since you have the density and the volume, which is 200 ml. Make sure the units of the mass are accurate, grams, milligrams.......etc.

10%of352=10% means: 10/100=.10 X 352=35.2

what is my change if I buy as many £4.49 footballs as I can with £30?

Just divide: 30/4.49=6 the number of footballs that you can buy.

30 - (4.49 X 6)=3.06 pounds you will have left over.

90+p=40 what is x? You mean what's p

p=40-90

p=-50

how do you find the area of 3/4 circle?

Find the area of the whole circle first.

Divide the area by 4= which will give you 1/4 of the area.

Then subtract this 1/4 from whole area, which will give you 3/4 of the area.

(2) The length of a rectangle is increased by 60%. By what percentage should the width be reduced to keep the area of the rectangle the same?

If the length of the rectangle is increased by 60%, then the width of the rectangle should be reduced by 37.5% in order to keep the area the same.

(4) The simple interest of Rs.6300 in 7 years at 8% per annum will be same as simple interest on Rs.16800 at 3% per annum in how many years?

The two investments should be equal in 7 years, where both investments will have earned the same amount of interest of 3,528 Rs.

Lisa got an average score of 85 in 4 tests. She got 86 as the average of the highest 3 scores, and his lowest two scores are the same numbers. What is the average of her highest two scores?

Lisa's scores are as follows: 89, 87, 82, 82=340

Her 4-tests average is: 340/4=85

89 + 87 +82=258/3=86 The average of the highest 3 scores.

89 + 87=176/2=88 The average of her highest two scores.

Hallo guest

What is 3,200+30% =3,200 X 1.30=4,160, or .3 X 3,200=960 + 3200=4,160

every three months you should get

3%  x  3months/12months =  9/12 = 3/4% interest Or 0.0075)     since it is comp[ounded every 3 months (four times a year) you have 5 years  or 20 interest periods

Then    p(Principle) =  p (1.0075)^20  =  50,000 (1.0075)^20 = 58,059.21

The balance of the investment after 5 years should be=58,059.21

 Balvinder writes down all the numbers from 1 to 3268 (including 1 and 3268). How many digits has he written down?

1 - 9  = 9 digits

10-99 = 180 digits

100-999 = 2700 digits

1000-3268 = 9076 digits

9 + 180 + 2700 + 9076  = 11965 digits

Notice that we can write any single letter  "a" as  " 1a  "....so

12a + a    =  12a + 1a   = 13a

Something like this?

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A squared number is what you get when you multiply a number by itself; for example, 4 is the square of 2, because 2x2=4, and 25 is the square of 5, because 5x5=25, and so on. A cubed number is what you get when you multiply a number by itself TWICE; for example, if you do 2x2x2, first 2x2=4, and then this multipled by 2 again =8, so 8 is the CUBE of 2. 4x4=8, and 8 multiplied by 4 again=32, so 32 is the CUBE of 4. Numbers that you multiply to get their square or cube root

25.8069758011278803