Find the product of 21 and (6.3 · 10-4).
a) 0.1323 · 10-1
b) 1.323 · 10-3
c) 1.323 · 10-2
d) 1.323 · 102

The correct option is C.

Step-by-step explanation:

The given numbers are 21 and (6.3 · 10⁻⁴).

We need find the product of given numbers.

On simplification we get

Write the number 132.3 in scientific notation.

Using power property of exponents we get

The product of given values is . Therefore the correct option is C.

answer: options

step-by-step explanation:

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

  region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

  region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true