What is the value of the underlined digit in 91,764,350

Answers

Answer 1
Answer: The underlined digit is 700,000 because if you look at where the 7 is and take out the 91 and make all other numbers a 0 it turns into 700,000

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Perform the division and leave the result in trigonometric form.

Answers

Answer:

(1)/(2) ( cos40° + isin40°)

Step-by-step explanation:

To divide

\frac{r_{1(cosx_(1)+isinx_(1))  } }{r_(2)(cosx_(2)+isinx_(2))   }

= (r_(1) )/(r_(2) ) [ cos(x₁ - x₂) + isin(x₁ - x₂)

Given

(2(cos90+isin90)/(4(cos50+isin50))

= (2)/(4) ( cos(90 - 50)° + isin(90 - 50)°

= (1)/(2) ( cos40° + isin40° )

How do you do this problem?

Answers

The pythagorean theorem states that a² + b² = c². 
We have a = 10 and c = 20. 
100 + b² = 400 
Subtract 100 from each side. 
b² = 300 
Get the square root of 300. 
It could be expressed as b ≈ 17.321, or could stay in radical form as√(300)
Hope this helps!

80% of what # is 16?

Answers

80% of x = 16
"of" translates to multiplication and 80% becomes 80/100.

80/100 × x = 16

0.8x = 16

0.8x/0.8 = 16/0.8

x = 16/0.8

x = 20


Your final answer is 80% of 20 is 16.

Lexi started her homwork at 4:30 P.M. She finished at 5:05 P.M. How many seconds did it take her to finish her homework?

Answers

35 minutes times 60 = 2100 so 2100 seconds
35 minutes   You need to know that 60 seconds = 1 hour.

35 × 60 = 2100

The answer is 2100 seconds.

HOPE THIS HELPED
:)

How do you round 78.539 to the nearest hundredths

Answers

Find the hundredths place, which in this case would be 3
Look one number to the right, which is 9
Since 9 is greater than 5, you would round the 3 up to 4
78.54
The 5 is in the tenths place, the 3 is in the hundredths place, and the 9 is in the thousandths place. So, to round to the hundredths place, we would look at the number after the 3, which is 9. Because 9 is greater than 4, we change add 1 to the 3, making it 4. So the correct answer is 78.54. However, if instead of 9 the number after the hundredths place was lower than 5, the 3 would stay 3, making the answer 78.53. But the correct answer in this case is 78.539.

What is the intercept of the line y=-1/4x+3

Answers

Answer:

y-intercept: (0,3); x-intercept: (12,0)

Step-by-step explanation:

The y-intercept is in a line where x = 0, so to find it, you can plug in 0 for x in the equation.

y = -¹/₄(0) + 3

y = 0 + 3

y = 3

So when x = 0, y = 3, therefore the y-intercept is (0,3)

The x-intercept is when y = 0, so plug in 0 into y

0 = -¹/₄x + 3

-3 = -¹/₄x

x = 12

So when  = 0, x = 12, therefore the x-intercept is (12,0)

Answer:

(0,3)

Step-by-step explanation:

y = -1/4 + 3

The intercept is (0,3)