1. Rewrite the number with the smaller exponent so that it has the same exponent as the number with the larger exponent by moving the decimal point of its decimal number.
2.Add/subtract the decimal numbers. The power of 10 will not change.
3. Convert your result to scientific notation if necessary.
Answer:
$12.75
Step-by-step explanation:
Skubic Family-
22.75 = 5.25 + 7x
17.5 = 7x
2.5 = x
Therefore the cost for each person is equal to $2.5
Shaw Family-
2.5(3) + 5.25
7.5 + 5.25 = $12.75
Answer:
I can tell you the first one and you can figure it out from there. 70 is 40% persent of what number? Well, we can chop 40% to 20% and chop 70 in half and we get 35. So 35 = 20% So we multiply 35 by five, and get 175. So 70 is 40% of 175.
Step-by-step explanation:
If you subtract the amount that Jack spent on the book ($8.72) from the amount of money that Jack originally had ($20.08) then you get $11.36 left over.
We will apply Pythagoras theorem in a right triangle, which states
" Consider a right triangle with hypotenuse 'h' and two legs say 'b' and 'p'. Pythagoras theorem states that the square of hypotenuse is equal to the sum of the square of both the legs of a triangle".
Mathematically, 
(Equation 1)
Length of hypotenuse (h)= 52 feet
Length of one leg (let b )= 20 feet
We need to calculate the length of another leg that is 'p'
Using Equation 1,
Substituting the values, we get
p = 48 feet
Therefore, Option D is the correct answer.
