Question

A popular chain of superstore makes 30.479×10730.479×107 dollars in profit each year. One of its store makes 210.2×104210.2×104 in profit each year.

How many times greater is the profit made by the chain than by one of its store?

Enter your answer, using scientific notation, in the boxes.

Answer 1

To find how many times greater the chain's profit is than one store's, divide the chain's profit by the store's profit. After dividing the coefficients (30.479/210.2) and subtracting the exponents (7-4), we find that the chain's profit is 145 times greater than that of one store, which is 1.45 × 10² in scientific notation.

Step-by-step explanation:

To determine how many times greater the profit made by the chain is than by one of its store, we need to divide the total profit of the chain by the profit of one store. Both profits are given in scientific notation as follows:

Chain's annual profit: 30.479 × 107 dollars

One store's annual profit: 210.2 × 104 dollars

To perform the division, we divide the coefficients and subtract the exponents:

(30.479 × 107) / (210.2 × 104) = (30.479 / 210.2) × 10(7 - 4)

Calculating the division of coefficients and exponents separately:

Coefficients: 30.479 / 210.2 ≈ 0.145

Exponents: 103, since 7 - 4 = 3

The result is:

0.145 × 103, which is the same as 1.45 × 102 in scientific notation after adjusting the decimal point one place to the right. Therefore, the chain's profit is 145 times greater than the profit of one store.

Answer 2

(SAT Prep) In the given figure, the reflex angle ∠DOB has measure of 3.5y while the measure of ∠AOD is y. Find the measure of the non-reflex ∠DOB in degrees.