Radio signals travel at a rate of 3x10^8 meters per second.how many seconds would it take for a radio signal to travel from a satellite to the surface of earth if the satellite is orbiting at a height of 3.6x10^7 meters?
A. 8.3 seconds
B. 1.2x10^-1 seconds
C. 1.08x10^16 seconds
D. 10.8x10^15 seconds------
Not sure if im correct can someone check my answer?
You guys are wrong!!
I just took the test and it is B.
yall know that posting the letter isnt helpful because the answer could be the same its just that teachers might switch up the letter combos
F4rt bucket agrees with guy above
anonymous is right it's b
unit 2, lesson 9: exponents and exponential functions unit test for california connections academy
** these were the correct answers for the test that i took, apologies if it's not correct for your test **
** i start giving the letter answers with the word and scientific notation problems, the equations have the answer after the equal sign **
1) -(5)^-1 = -1/5
2) (-8.3)^0 = 1
3) -1/y^-4 = -y^4
4) 4^6(4^3) = 4^9
5) (3)^10(3)^-9 = 3
6)(t^8)^2 = t^16
7) (5t^3)^-4 = 1/625t^12
8) what is the value of 12x^-3y^-1 for x = -1 and y = 5?
a) -12/5
9) (y^-5)^-10y^10 = y^60
10) (4/7y^5)^2 = 16/49y^10
11) determine if the number is written in scientific notation. if not, explain 2.01 x 10^-5 .
c) yes; the number is written in scientific notation
12) what is the order of 4 x 10^-7 , 7 x 10^-9 , 1 x 10^4 , 2 x 10^4 from least to greatest?
c) 7 x 10^-9 , 4 x 10^-7 , 1 x 10^4 , 2 x 10^4
13) find the simplified form of the expression. give your answer in scientific notation. (8 x 10^4)(9 x 10^-8)
b) 7.2 x 10^-3
14) astronomers measure large distances in light-years. one light-year is the distance that light can travel in one year, or approximately 5.88 x 10^12 miles. suppose a star is 3.2 x 10^2 light-years from earth. in scientific notation, approximately how many miles is it?
d) 1.88 x 10^15
15) a dinosaur fossil is 92,170,000 years old. how can you express this age in scientific notation with the highest level of precision?
b) 9.217 x 10^7
16) radio signals travel at a rate of 3 x 10^8 meters per second. how many seconds would it take for a radio signal to travel from a satellite to the surface of earth if the satellite is orbiting at a height of 3.6x10^7 meters? (hint: time is distance divided by rate.)
b) 1.2 x 10^-1 seconds
17) does the table represent an exponential function?
x: 1 | 2 | 3 | 4 a) yes
y: 4 |16| 64 | 256
18) does the rule y = 6x^7 represent an exponential function?
b) no
19) choose the correct graph of the function y = -8(2^x)
a) the graph with a downward trend curve on the left bottom corner
20) choose the correct graph of the function y = 1/5(3^x)
b) the graph with an upward trend curve that goes from the left top
corner to the right top corner
21) in an appropriate environment guppies reproduce at an astounding rate. a population of breeding guppies doubles every 2 months. how many guppies will there be after 6 months if the beginning population is 180 guppies?
a) 1,440 guppies
22) mark raises guppies in an aquarium. he finds out that guppies reproduce very rapidly and the number doubles every month. He starts out with 10 guppies, and the function y = 10(2^x) models the number of guppies he will have after x months. which graph represents this function?
b) the graph with a positive curve trend. there are two graphs with a
positive cure trend, the answer for this question is the graph with a
larger positive curve trend.
23) a $3,300.00 principle earns 4% interest, compounded annually. after 3 years, what is the balance in the account?
a) 3,712.05
24) a boat costs $92,000.00 and depreciates in value by 15% per year. how much will the boat be worth after 10 years?
a) $18,112.45
@guardian angel
idk what test tou got but all those questions are completely difrent from mine
Thanks oobleck
Ikr, the answer to my first one is - 1/6 and is C. The question is -(6)^-1
No, that's how far it will travel in 3.6x10^7 seconds
distance = speed * time
You want the time, so divide distance by speed
3.6x10^7 / 3x10^8 = 1.2x10^-1
Note also that if you had been correct with D, that is not scientific notation, since the number must be less than 10. C and D are the sama value, but only C is scientific notation.
they change the questions guys ABCD dosent work on tests.
saddly