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Match the proportions:   x/4 = 2/5   where x is the required number of tablespoons

Multiply both sides by 4:   x = 4*2/5   or  x = 8/5  or  x = 1.6 tablespoons

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circumference = 2pi*r  where r is radius,  so  r = circumference/(2pi)

area = pi*r^2

So  area = pi*(circumference/(2pi))^2

Hence:  circumference = 2pi*sqrt(area/pi)

Can you take it from here?

16/25

If it's UK coins then the denominations less than 50p are:

1p;  2p;  5p;  10p;  20p

You lost a minus sign in there Mathaholic!

Not quite Guest!

SOH    Sine = Opposite/Hypotenuse

CAH    Cosine = Adjacent/Hypotenuse

TOA    Tangent = Opposite/Adjacent

By "p" do you mean pence?  Because if so than could you list the denominations?

74x-56=58(x-23)

74x-56=58x-1334

16x=1278

x=79.875

5.13e+12

SOH:

Sine = Hypotenuse x Opposite angle measure

CAH:

Cosine = Hypotenuse x Adjacent angle measure

TOA:

Tangent = Adjacent angle measure x opposite angle measure

4x-1+5x^3+7x

5x^3 + 7x + 4x - 1

5x^3 + 11x - 1  This is a third degree polynomial based on x^3.

a piggy bank contains only quarters and nickels, and there is a total of 60 coins. the total value of coins in the bank is 7.40. How many quarters are in the piggy bank?

Let the number of nickels=N

The number of quarters =60 - N

.05N + .25[60 - N] =7.40

.05N + 15 - .25N =7.40

-.20N =7.4 - 15

-.20N=-7.6 divide both sides by -.20

N =38 number of nickels

60  - 38 =22 number of quarters.

what is sin(68)/9*7

sin(68/63)=1.079......, which is WRONG!. Sine must be between -1 and +1.

Write the polynomial in standard form. What is the name of the polynomial based on its degree and number of terms ?

Yes. You got 72.5% out of 100%. If you had gotten 40 out 40, that would be the same as 100% or pefect score.

The left side must equal the right side, such as: 2x + 10 =20, so that x=5 in this example.

Did I get a good score.

q+32=71 subtract 32 from both sides

q=71 - 32

q=39

Just divide: 29/40 =.725 x 100 =72.5%

72.%

Not sure what else you want

Look just right of zero. It says "+-" .

what is 5.38% of £450

(5.38/100) x 450 =24.21 pounds.