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Use order of operations: 6 + 7 - 8 x 10 = 6 + 7 - 80 = 13 - 80 = -67

59 + ( - 79 ) = 59 - 79 = -20 

I assume you are solving for the value of b.

First you would multiply 18.3(5)
115 = 91.5 + b

Now you want to isolate the variable, and gather your other terms. Subtract 91.5 from both sides.

115-91.5 = 91.5-91.5 + b

23.5 = b

The answer is b = 23.5

The standard form of the equation of a circle whose center is (h, k) and whose radius is r is:

(x - h)² + (y - k)²  =  r²

Since the center is (2, 5),  h = 2  and  k = 5; since the radius is 4,  r = 4:

(x - 2)² + (y - 5)²  =  4²          or          (x - 2)² + (y - 5)²  =  16 

\(\frac{1hour}{60minutes}=\frac{24hours}{x}\)

\(1hour\times x = 24hours\times 60 minutes\)

\(x = 1440minutes\)

Enter the base number in the calculator then press the square root symbol key.

The answer will be displayed.

\(\frac{\frac{2.5}{1.25}}{6.75}\)

\(\frac{2}{6.75}\)

\(\frac{200}{675}\)

\(\frac{8}{27}\)

\(0.296296296296296...\)

Use the Inverse Square Law. (Which all radiation obeys)

ie double the distance from the source is one quarter of the intensity

   three times the distance from the source is one ninth of the intensity

  four times the distance   ...... one sixteenth  of the intensity

or 1/d^2  where d is the distance from the source

1440

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

2/3

The term "percent" is from Latin meaning "per hundred". To get the percentage of anything, you multiply by 100.

3=2(x-2)+2-x

3=2x - 4 + 2 - x

3=x - 2 add 2 to both sides

5=x or

x=5

4 divides into 7 once with a remainder of three, so

your answer is 1 and 3/4

If each pack contains 8 chocolate bars and he buys 7, you multiply 8*7= 56 chocolate bars.

You subtract 10 on both sides. and end up with n=5