Can you tell me what 6+3.9 is

Answers

Answer 1

Answer:

Answer:

9.9

Step-by-step explanation:

Answer 2

Answer: 6 + 3.9 = 9.9

you add the two whole numbers together and get 9

then you need to add whatever is behind the decimal point which is 9

add them together and you get 9.9

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Answers

A leading medical journal claims that 71% of roller-coaster riders experience extreme anxiety just before the ride begins. A popular theme park wants to conduct a survey with a margin of error of ±8%. The minimum sample size, rounded to the nearest whole person is:

Answer: N ≥ 129

I hope it helps, Regards.

Recall the symbol Z represents the complex conjugate of z. If z=a+bi and w=c+di show that the statement is true zw=z*w

Answers

z = a + bi
w = c + di

zw = (a + bi)(c + di)
zw = a(c + di) + bi(c + di)
zw = a(c) + a(di) + bi(c) + bi(di)
zw = ac + adi + bci + bdi²
zw = ac + adi + bci + bd(-1)
zw = ac + adi + bci - bd

Work shown please.. I need help with this topic.

Answers

Tan θ = $(opp)/(adj)$
∴ Tan (59°) = $(x)/(5)$
x = [Tan (59°)] (5)
= (1.66428) (5)
x = 8.321 units

Use elimination to solve this system of equations. X-4y=-11 and 5x-7y=-10

Answers

x-4y=-11<=> -5x + 20y = 55
5x - 7y = -10
=>0*x + 13*y = 45 => y =45/13 => x = 4*(45/13) -11 = 180/13 -11 =>
x = 37/13;

People use water to cook, clean, and drink every day. An estimate of 17.2% of the water used each day is for cooking . If a family uses 68.8 gallons of water a day for cooking, how many gallons do they use every day?

Answers

Ummmmmmm try using those things that help ppl with math

A traffic helicopter pilot 60 meters above the road spotted two antique cars. The angles of depression are 10.2 and 8.7 degrees. How far apart are the cars? A. 58.6 B. 392.1 C. 333.5 D. 57.8