Convert 0.00049 to scientific notation.

Mathematics

2 answers:

Studentka2010 [4]3 years ago

5 0

Answer:

Step-by-step explanation:

ziro4ka [17]3 years ago

3 0

Answer:

D)4.9 x 10^-4

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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Divide and simplify to the form a+bi. 5+6i 5+6i 6+ i (Simplify your answer. Type an integer or a fraction. Type your answer in t

alekssr [168]

Answer:

$-\frac{6}{37} + \frac{371}{37}i$

Step-by-step explanation:

We need to evaluate $\frac{(5+6i)(5+6i)}{6+i}$

(5+6i)(5+6i) = (25 + 36i² + 60i) = (25 - 36 + 60i) = -11 + 60i

= $\frac{-11+60i}{6+i}$

Now we rationalize the denominator.

Now, multiplying both the numerator and denominator by (6-i)

$\frac{-66 + 11i + 360i - 60i^2}{36 - i^2} = \frac{-66 + 60 + 371i}{37} = \frac{-6 + 371i}{37}$

= $-\frac{6}{37} + \frac{371}{37}i$

Formula used:

(a+b)² = a² + b² + 2ab

i² = -1

6 0

4 years ago

A pair of equations is shown below.

Zolol [24]

I'll solve it by substitution instead of graphing.

x + y = 2
y = (1/2)x + 5

Substitute equation 2 into equation 1.

x + (1/2)x + 5= 2

(3/2)x + 5 = 2

(3/2)x + 5 - 5 = 2 - 5

(3/2)x = -3

(2/3) * (3/2)x = -3 * (2/3)

x = -2

x + y = 2
-2 + y = 2
y - 2 = 2
y - 2 + 2 = 2 + 2
y = 4

x = -2
y = 4

(-2,4)

Your answer is B) (-2,4).

4 0

3 years ago

Employment data at a large company reveal that 59 % of the workers are married, that 43 % are college graduates, and that 1/3 of

Aleksandr-060686 [28]

Answer:

a. 74.63%

b. 33.63%

c. 87.67%

Step-by-step explanation:

If 59% (0.59) of the workers are married, then It means (100-59 = 41%) of the workers are not married.

If 43% (0.43) of the workers are College graduates, then it means (100-43= 57%) of the workers are not college graduates.

If 1/3 of college graduates are married, it means portion of graduate that are married = 1/3 * 43% = 1/3 * 0.43 = 0.1433.