geno3141

(x + 7)(x - 2)

Use FOIL  --  First, Outside, Inside, Last

   First = x · x         Outside =  x · -2          Inside =  7 · x            Last = 7 · -2

(x + 7)(x - 2)  =  (x)(x) + (x)(-2) + (7)(x) + (7)(-2)

                     =  x² - 2x + 7x - 14

                     =  x²  + 5x - 14

Replace g with 2 and replace h with 3 in the expressions:

i)    3g + 2h - 4  =  3(2) + 2(3) - 4  =  6 + 6 - 4  =  8

ii)   g² + h² - h  =  (2)² + (3)² - (3)  =  4 + 9 - 3  =  10

iii)  4g + h  =  4(2) + 3  =  8 + 3  =  11

(3/4)x  =  9

Multiply both sides by the reciprocal of 3/4:

(4/3)(3/4)x  =  (4/3)(9)

              x  =  12

This doesn't seem to be a complete question.

.33333333... has value 1/3.

2.3.... is 2 1/3

2 1/3  =  7/3

60 / 2.3333.  =  60 / (7/3)  =  60 x 3/7  =  180/7  =  25 5/7  or  25.714285714285...

(When you divide fractions, you multiply by the reciprocal.)

First, at the lower left of the calculator, make certain that the calculator is in the correct mode: degree or radian.

Then press (2nd) and (asin) and enter the number you have. The result will be the size of the angle.

"asin" means "arcsin", which is the inverse sine.

Divide the part by the whole to get the decimal equivalent and then multiply by 100 to get a percentage.

35 540 419 / 7 125 000 000  ≈  0.004 988 

0.004 988 x 100  =  0.4988 ≈ 0.5%

75.22 / 0.2  x  10/10  =  752.2 / 2  =  326.1

468 000 000  =  4.68 x 10^8  because you need to move the decimal point 8 places to the left.

213 will divide into 3621 17 times, so  3621:213  reduces to  17:1